Import jit/jit64/valuetype/nullable tests.

This includes box/unbox and cast tests. There is also a small change to jit/config/minimal/project.json to include the System.Runtime.InteropServices package.
author: Pat Gavlin <pagavlin@microsoft.com> 2015-12-04 14:22:14 -0800
committer: Pat Gavlin <pagavlin@microsoft.com> 2015-12-04 15:57:25 -0800
commit: d999a0aa9df21107e213f1c491b8961838e47a2e (patch)
tree: 83878ac83ddac7b33ec7669f0eb122abe1576a76 /tests/src/JIT/jit64/valuetypes/nullable/box-unbox
parent: 4feb6c40dd4d60783b54d8b58431bf069c143796 (diff)
download: coreclr-d999a0aa9df21107e213f1c491b8961838e47a2e.tar.gz
coreclr-d999a0aa9df21107e213f1c491b8961838e47a2e.tar.bz2
coreclr-d999a0aa9df21107e213f1c491b8961838e47a2e.zip
393 files changed, 17500 insertions, 0 deletions
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/app.config b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/app.config
new file mode 100644
index 0000000000..8077c95440
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/app.config
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Runtime" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.20.0" newVersion="4.0.20.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Text.Encoding" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Threading.Tasks" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.IO" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Reflection" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
+</configuration>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox001.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox001.cs
new file mode 100644
index 0000000000..055705ef46
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox001.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((char)o, Helper.Create(default(char)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((char?)o, Helper.Create(default(char)));
+    }
+
+    private static int Main()
+    {
+        char? s = Helper.Create(default(char));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox001.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox001.csproj
new file mode 100644
index 0000000000..e66bc7e806
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox001.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox001.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox002.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox002.cs
new file mode 100644
index 0000000000..a32522e683
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox002.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of bool using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((bool)o, Helper.Create(default(bool)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((bool?)o, Helper.Create(default(bool)));
+    }
+
+    private static int Main()
+    {
+        bool? s = Helper.Create(default(bool));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox002.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox002.csproj
new file mode 100644
index 0000000000..0c13b89ca2
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox002.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox002.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox003.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox003.cs
new file mode 100644
index 0000000000..11590f7195
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox003.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((byte)o, Helper.Create(default(byte)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((byte?)o, Helper.Create(default(byte)));
+    }
+
+    private static int Main()
+    {
+        byte? s = Helper.Create(default(byte));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox003.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox003.csproj
new file mode 100644
index 0000000000..51c1291ea7
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox003.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox003.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox004.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox004.cs
new file mode 100644
index 0000000000..11548102e9
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox004.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of sbyte using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((sbyte)o, Helper.Create(default(sbyte)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((sbyte?)o, Helper.Create(default(sbyte)));
+    }
+
+    private static int Main()
+    {
+        sbyte? s = Helper.Create(default(sbyte));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox004.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox004.csproj
new file mode 100644
index 0000000000..fbded7667a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox004.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox004.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox005.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox005.cs
new file mode 100644
index 0000000000..09b77390a4
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox005.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((short)o, Helper.Create(default(short)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((short?)o, Helper.Create(default(short)));
+    }
+
+    private static int Main()
+    {
+        short? s = Helper.Create(default(short));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox005.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox005.csproj
new file mode 100644
index 0000000000..f197b5eab3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox005.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox005.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox006.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox006.cs
new file mode 100644
index 0000000000..1da64c53c6
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox006.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ushort using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((ushort)o, Helper.Create(default(ushort)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((ushort?)o, Helper.Create(default(ushort)));
+    }
+
+    private static int Main()
+    {
+        ushort? s = Helper.Create(default(ushort));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox006.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox006.csproj
new file mode 100644
index 0000000000..895c6aeafc
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox006.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox006.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox007.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox007.cs
new file mode 100644
index 0000000000..80fc537c97
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox007.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((int)o, Helper.Create(default(int)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((int?)o, Helper.Create(default(int)));
+    }
+
+    private static int Main()
+    {
+        int? s = Helper.Create(default(int));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox007.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox007.csproj
new file mode 100644
index 0000000000..7dac143834
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox007.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox007.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox008.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox008.cs
new file mode 100644
index 0000000000..e82794fdbe
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox008.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of uint using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((uint)o, Helper.Create(default(uint)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((uint?)o, Helper.Create(default(uint)));
+    }
+
+    private static int Main()
+    {
+        uint? s = Helper.Create(default(uint));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox008.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox008.csproj
new file mode 100644
index 0000000000..d59906b5a9
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox008.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox008.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox009.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox009.cs
new file mode 100644
index 0000000000..e1b80e5d05
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox009.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((long)o, Helper.Create(default(long)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((long?)o, Helper.Create(default(long)));
+    }
+
+    private static int Main()
+    {
+        long? s = Helper.Create(default(long));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox009.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox009.csproj
new file mode 100644
index 0000000000..24a5a70316
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox009.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox009.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox010.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox010.cs
new file mode 100644
index 0000000000..5b39240e80
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox010.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ulong using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((ulong)o, Helper.Create(default(ulong)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((ulong?)o, Helper.Create(default(ulong)));
+    }
+
+    private static int Main()
+    {
+        ulong? s = Helper.Create(default(ulong));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox010.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox010.csproj
new file mode 100644
index 0000000000..39ac6a279a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox010.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox010.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox011.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox011.cs
new file mode 100644
index 0000000000..2df4d0bb59
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox011.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((float)o, Helper.Create(default(float)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((float?)o, Helper.Create(default(float)));
+    }
+
+    private static int Main()
+    {
+        float? s = Helper.Create(default(float));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox011.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox011.csproj
new file mode 100644
index 0000000000..bec7e50f9f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox011.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox011.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox012.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox012.cs
new file mode 100644
index 0000000000..a4c916fa5c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox012.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of double using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((double)o, Helper.Create(default(double)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((double?)o, Helper.Create(default(double)));
+    }
+
+    private static int Main()
+    {
+        double? s = Helper.Create(default(double));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox012.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox012.csproj
new file mode 100644
index 0000000000..c639f9c20a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox012.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox012.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox013.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox013.cs
new file mode 100644
index 0000000000..9f796a7b92
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox013.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((decimal)o, Helper.Create(default(decimal)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((decimal?)o, Helper.Create(default(decimal)));
+    }
+
+    private static int Main()
+    {
+        decimal? s = Helper.Create(default(decimal));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox013.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox013.csproj
new file mode 100644
index 0000000000..b0ff6dacb6
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox013.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox013.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox014.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox014.cs
new file mode 100644
index 0000000000..5e3fa61a5d
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox014.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of IntPtr using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((IntPtr)o, Helper.Create(default(IntPtr)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((IntPtr?)o, Helper.Create(default(IntPtr)));
+    }
+
+    private static int Main()
+    {
+        IntPtr? s = Helper.Create(default(IntPtr));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox014.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox014.csproj
new file mode 100644
index 0000000000..bfb2637f7c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox014.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox014.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox015.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox015.cs
new file mode 100644
index 0000000000..db4bd57e70
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox015.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((UIntPtr)o, Helper.Create(default(UIntPtr)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((UIntPtr?)o, Helper.Create(default(UIntPtr)));
+    }
+
+    private static int Main()
+    {
+        UIntPtr? s = Helper.Create(default(UIntPtr));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox015.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox015.csproj
new file mode 100644
index 0000000000..987c0d7a15
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox015.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox015.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox016.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox016.cs
new file mode 100644
index 0000000000..c390bb2454
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox016.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of Guid using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((Guid)o, Helper.Create(default(Guid)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((Guid?)o, Helper.Create(default(Guid)));
+    }
+
+    private static int Main()
+    {
+        Guid? s = Helper.Create(default(Guid));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox016.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox016.csproj
new file mode 100644
index 0000000000..d4ec66fc4b
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox016.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox016.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox017.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox017.cs
new file mode 100644
index 0000000000..e7f17e04f3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox017.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((GCHandle)o, Helper.Create(default(GCHandle)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((GCHandle?)o, Helper.Create(default(GCHandle)));
+    }
+
+    private static int Main()
+    {
+        GCHandle? s = Helper.Create(default(GCHandle));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox017.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox017.csproj
new file mode 100644
index 0000000000..e742ab22e8
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox017.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox017.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox018.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox018.cs
new file mode 100644
index 0000000000..886436268c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox018.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ByteE using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((ByteE)o, Helper.Create(default(ByteE)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((ByteE?)o, Helper.Create(default(ByteE)));
+    }
+
+    private static int Main()
+    {
+        ByteE? s = Helper.Create(default(ByteE));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox018.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox018.csproj
new file mode 100644
index 0000000000..e7aebbd7e6
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox018.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox018.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox019.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox019.cs
new file mode 100644
index 0000000000..cbbf89d594
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox019.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((IntE)o, Helper.Create(default(IntE)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((IntE?)o, Helper.Create(default(IntE)));
+    }
+
+    private static int Main()
+    {
+        IntE? s = Helper.Create(default(IntE));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox019.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox019.csproj
new file mode 100644
index 0000000000..57f5aacf06
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox019.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox019.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox020.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox020.cs
new file mode 100644
index 0000000000..37f29ef906
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox020.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of LongE using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((LongE)o, Helper.Create(default(LongE)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((LongE?)o, Helper.Create(default(LongE)));
+    }
+
+    private static int Main()
+    {
+        LongE? s = Helper.Create(default(LongE));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox020.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox020.csproj
new file mode 100644
index 0000000000..547b661e12
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox020.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox020.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox021.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox021.cs
new file mode 100644
index 0000000000..9e16e6ef01
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox021.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((EmptyStruct)o, Helper.Create(default(EmptyStruct)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((EmptyStruct?)o, Helper.Create(default(EmptyStruct)));
+    }
+
+    private static int Main()
+    {
+        EmptyStruct? s = Helper.Create(default(EmptyStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox021.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox021.csproj
new file mode 100644
index 0000000000..e6e986f8ab
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox021.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox021.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox022.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox022.cs
new file mode 100644
index 0000000000..4d3398b2e0
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox022.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((NotEmptyStruct)o, Helper.Create(default(NotEmptyStruct)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((NotEmptyStruct?)o, Helper.Create(default(NotEmptyStruct)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStruct? s = Helper.Create(default(NotEmptyStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox022.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox022.csproj
new file mode 100644
index 0000000000..575168657c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox022.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox022.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox023.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox023.cs
new file mode 100644
index 0000000000..27f1b38011
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox023.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructQ)o, Helper.Create(default(NotEmptyStructQ)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructQ?)o, Helper.Create(default(NotEmptyStructQ)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructQ? s = Helper.Create(default(NotEmptyStructQ));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox023.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox023.csproj
new file mode 100644
index 0000000000..d0c75237a6
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox023.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox023.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox024.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox024.cs
new file mode 100644
index 0000000000..830295f1cf
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox024.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructA using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructA)o, Helper.Create(default(NotEmptyStructA)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructA?)o, Helper.Create(default(NotEmptyStructA)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructA? s = Helper.Create(default(NotEmptyStructA));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox024.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox024.csproj
new file mode 100644
index 0000000000..4ec7403952
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox024.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox024.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox025.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox025.cs
new file mode 100644
index 0000000000..85aa2a29a1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox025.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructQA)o, Helper.Create(default(NotEmptyStructQA)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructQA?)o, Helper.Create(default(NotEmptyStructQA)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructQA? s = Helper.Create(default(NotEmptyStructQA));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox025.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox025.csproj
new file mode 100644
index 0000000000..821bda5eb8
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox025.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox025.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox026.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox026.cs
new file mode 100644
index 0000000000..23e9f84a73
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox026.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of EmptyStructGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((EmptyStructGen<int>)o, Helper.Create(default(EmptyStructGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((EmptyStructGen<int>?)o, Helper.Create(default(EmptyStructGen<int>)));
+    }
+
+    private static int Main()
+    {
+        EmptyStructGen<int>? s = Helper.Create(default(EmptyStructGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox026.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox026.csproj
new file mode 100644
index 0000000000..19e4584594
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox026.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox026.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox027.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox027.cs
new file mode 100644
index 0000000000..0b079fed64
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox027.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructGen<int>)o, Helper.Create(default(NotEmptyStructGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructGen<int>?)o, Helper.Create(default(NotEmptyStructGen<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructGen<int>? s = Helper.Create(default(NotEmptyStructGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox027.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox027.csproj
new file mode 100644
index 0000000000..f1db4b71fc
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox027.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox027.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox028.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox028.cs
new file mode 100644
index 0000000000..4dfb786976
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox028.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructConstrainedGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGen<int>)o, Helper.Create(default(NotEmptyStructConstrainedGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGen<int>?)o, Helper.Create(default(NotEmptyStructConstrainedGen<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGen<int>? s = Helper.Create(default(NotEmptyStructConstrainedGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox028.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox028.csproj
new file mode 100644
index 0000000000..19ee778cfb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox028.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox028.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox029.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox029.cs
new file mode 100644
index 0000000000..18da1efcfb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox029.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenA<int>)o, Helper.Create(default(NotEmptyStructConstrainedGenA<int>)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenA<int>?)o, Helper.Create(default(NotEmptyStructConstrainedGenA<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGenA<int>? s = Helper.Create(default(NotEmptyStructConstrainedGenA<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox029.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox029.csproj
new file mode 100644
index 0000000000..e0a761a0a4
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox029.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox029.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox030.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox030.cs
new file mode 100644
index 0000000000..7ac1ec14e1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox030.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructConstrainedGenQ<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenQ<int>)o, Helper.Create(default(NotEmptyStructConstrainedGenQ<int>)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenQ<int>?)o, Helper.Create(default(NotEmptyStructConstrainedGenQ<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGenQ<int>? s = Helper.Create(default(NotEmptyStructConstrainedGenQ<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox030.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox030.csproj
new file mode 100644
index 0000000000..5332b8f522
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox030.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox030.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox031.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox031.cs
new file mode 100644
index 0000000000..03b00fcaa2
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox031.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenQA<int>)o, Helper.Create(default(NotEmptyStructConstrainedGenQA<int>)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenQA<int>?)o, Helper.Create(default(NotEmptyStructConstrainedGenQA<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGenQA<int>? s = Helper.Create(default(NotEmptyStructConstrainedGenQA<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox031.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox031.csproj
new file mode 100644
index 0000000000..6c15fe370d
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox031.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox031.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox032.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox032.cs
new file mode 100644
index 0000000000..e09d68e256
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox032.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NestedStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((NestedStruct)o, Helper.Create(default(NestedStruct)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((NestedStruct?)o, Helper.Create(default(NestedStruct)));
+    }
+
+    private static int Main()
+    {
+        NestedStruct? s = Helper.Create(default(NestedStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox032.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox032.csproj
new file mode 100644
index 0000000000..a62be05586
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox032.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox032.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox033.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox033.cs
new file mode 100644
index 0000000000..ec467759aa
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox033.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((NestedStructGen<int>)o, Helper.Create(default(NestedStructGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((NestedStructGen<int>?)o, Helper.Create(default(NestedStructGen<int>)));
+    }
+
+    private static int Main()
+    {
+        NestedStructGen<int>? s = Helper.Create(default(NestedStructGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox033.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox033.csproj
new file mode 100644
index 0000000000..519edd3a6a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox033.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox033.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox034.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox034.cs
new file mode 100644
index 0000000000..53a3c2c21a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox034.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ExplicitFieldOffsetStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((ExplicitFieldOffsetStruct)o, Helper.Create(default(ExplicitFieldOffsetStruct)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((ExplicitFieldOffsetStruct?)o, Helper.Create(default(ExplicitFieldOffsetStruct)));
+    }
+
+    private static int Main()
+    {
+        ExplicitFieldOffsetStruct? s = Helper.Create(default(ExplicitFieldOffsetStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox034.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox034.csproj
new file mode 100644
index 0000000000..4318dd47ea
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox034.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox034.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox037.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox037.cs
new file mode 100644
index 0000000000..c55582ea4f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox037.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((MarshalAsStruct)o, Helper.Create(default(MarshalAsStruct)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((MarshalAsStruct?)o, Helper.Create(default(MarshalAsStruct)));
+    }
+
+    private static int Main()
+    {
+        MarshalAsStruct? s = Helper.Create(default(MarshalAsStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox037.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox037.csproj
new file mode 100644
index 0000000000..bd6fe46434
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox037.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox037.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox038.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox038.cs
new file mode 100644
index 0000000000..7297206410
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox038.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementOneInterface using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((ImplementOneInterface)o, Helper.Create(default(ImplementOneInterface)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((ImplementOneInterface?)o, Helper.Create(default(ImplementOneInterface)));
+    }
+
+    private static int Main()
+    {
+        ImplementOneInterface? s = Helper.Create(default(ImplementOneInterface));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox038.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox038.csproj
new file mode 100644
index 0000000000..2b8528424d
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox038.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox038.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox039.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox039.cs
new file mode 100644
index 0000000000..6f409f75a9
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox039.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((ImplementTwoInterface)o, Helper.Create(default(ImplementTwoInterface)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((ImplementTwoInterface?)o, Helper.Create(default(ImplementTwoInterface)));
+    }
+
+    private static int Main()
+    {
+        ImplementTwoInterface? s = Helper.Create(default(ImplementTwoInterface));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox039.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox039.csproj
new file mode 100644
index 0000000000..f2c72e299a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox039.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox039.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox040.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox040.cs
new file mode 100644
index 0000000000..58984d19f6
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox040.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementOneInterfaceGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((ImplementOneInterfaceGen<int>)o, Helper.Create(default(ImplementOneInterfaceGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((ImplementOneInterfaceGen<int>?)o, Helper.Create(default(ImplementOneInterfaceGen<int>)));
+    }
+
+    private static int Main()
+    {
+        ImplementOneInterfaceGen<int>? s = Helper.Create(default(ImplementOneInterfaceGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox040.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox040.csproj
new file mode 100644
index 0000000000..23ccd4c86e
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox040.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox040.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox041.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox041.cs
new file mode 100644
index 0000000000..aaa93d1ba8
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox041.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((ImplementTwoInterfaceGen<int>)o, Helper.Create(default(ImplementTwoInterfaceGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((ImplementTwoInterfaceGen<int>?)o, Helper.Create(default(ImplementTwoInterfaceGen<int>)));
+    }
+
+    private static int Main()
+    {
+        ImplementTwoInterfaceGen<int>? s = Helper.Create(default(ImplementTwoInterfaceGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox041.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox041.csproj
new file mode 100644
index 0000000000..881db12a9b
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox041.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox041.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox042.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox042.cs
new file mode 100644
index 0000000000..dab1a0a8df
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox042.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementAllInterface<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((ImplementAllInterface<int>)o, Helper.Create(default(ImplementAllInterface<int>)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((ImplementAllInterface<int>?)o, Helper.Create(default(ImplementAllInterface<int>)));
+    }
+
+    private static int Main()
+    {
+        ImplementAllInterface<int>? s = Helper.Create(default(ImplementAllInterface<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox042.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox042.csproj
new file mode 100644
index 0000000000..f7dd626158
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox042.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox042.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox043.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox043.cs
new file mode 100644
index 0000000000..3e02d8a11e
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox043.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((WithMultipleGCHandleStruct)o, Helper.Create(default(WithMultipleGCHandleStruct)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((WithMultipleGCHandleStruct?)o, Helper.Create(default(WithMultipleGCHandleStruct)));
+    }
+
+    private static int Main()
+    {
+        WithMultipleGCHandleStruct? s = Helper.Create(default(WithMultipleGCHandleStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox043.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox043.csproj
new file mode 100644
index 0000000000..e326f20a63
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox043.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox043.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox044.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox044.cs
new file mode 100644
index 0000000000..d1d8067cf0
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox044.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of WithOnlyFXTypeStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((WithOnlyFXTypeStruct)o, Helper.Create(default(WithOnlyFXTypeStruct)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((WithOnlyFXTypeStruct?)o, Helper.Create(default(WithOnlyFXTypeStruct)));
+    }
+
+    private static int Main()
+    {
+        WithOnlyFXTypeStruct? s = Helper.Create(default(WithOnlyFXTypeStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox044.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox044.csproj
new file mode 100644
index 0000000000..3a7928e295
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox044.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox044.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox045.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox045.cs
new file mode 100644
index 0000000000..b1a403acfc
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox045.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return Helper.Compare((MixedAllStruct)o, Helper.Create(default(MixedAllStruct)));
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return Helper.Compare((MixedAllStruct?)o, Helper.Create(default(MixedAllStruct)));
+    }
+
+    private static int Main()
+    {
+        MixedAllStruct? s = Helper.Create(default(MixedAllStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox045.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox045.csproj
new file mode 100644
index 0000000000..de5533e027
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/box-unbox/box-unbox045.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox045.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/app.config b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/app.config
new file mode 100644
index 0000000000..8077c95440
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/app.config
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Runtime" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.20.0" newVersion="4.0.20.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Text.Encoding" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Threading.Tasks" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.IO" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Reflection" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
+</configuration>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum001.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum001.cs
new file mode 100644
index 0000000000..30fa5b69ea
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum001.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of IntE using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(Enum o)
+    {
+        return Helper.Compare((IntE)o, Helper.Create(default(IntE)));
+    }
+
+    private static bool BoxUnboxToQ(Enum o)
+    {
+        return Helper.Compare((IntE?)o, Helper.Create(default(IntE)));
+    }
+
+    private static int Main()
+    {
+        IntE? s = Helper.Create(default(IntE));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum001.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum001.csproj
new file mode 100644
index 0000000000..da35c58c18
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum001.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-enum001.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum002.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum002.cs
new file mode 100644
index 0000000000..f0899348da
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum002.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(Enum o)
+    {
+        return Helper.Compare((ByteE)o, Helper.Create(default(ByteE)));
+    }
+
+    private static bool BoxUnboxToQ(Enum o)
+    {
+        return Helper.Compare((ByteE?)o, Helper.Create(default(ByteE)));
+    }
+
+    private static int Main()
+    {
+        ByteE? s = Helper.Create(default(ByteE));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum002.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum002.csproj
new file mode 100644
index 0000000000..2158e0dd0e
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum002.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-enum002.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum003.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum003.cs
new file mode 100644
index 0000000000..bd5748e80f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum003.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of LongE using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(Enum o)
+    {
+        return Helper.Compare((LongE)o, Helper.Create(default(LongE)));
+    }
+
+    private static bool BoxUnboxToQ(Enum o)
+    {
+        return Helper.Compare((LongE?)o, Helper.Create(default(LongE)));
+    }
+
+    private static int Main()
+    {
+        LongE? s = Helper.Create(default(LongE));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum003.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum003.csproj
new file mode 100644
index 0000000000..22fccce46d
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/enum/box-unbox-enum003.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-enum003.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/app.config b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/app.config
new file mode 100644
index 0000000000..8077c95440
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/app.config
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Runtime" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.20.0" newVersion="4.0.20.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Text.Encoding" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Threading.Tasks" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.IO" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Reflection" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
+</configuration>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics001.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics001.cs
new file mode 100644
index 0000000000..ab353a5518
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics001.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((char)(object)o, Helper.Create(default(char)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((char?)(object)o, Helper.Create(default(char)));
+    }
+
+    private static int Main()
+    {
+        char? s = Helper.Create(default(char));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics001.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics001.csproj
new file mode 100644
index 0000000000..c9bc47be3d
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics001.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics001.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics002.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics002.cs
new file mode 100644
index 0000000000..4f7a5fcb99
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics002.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of bool using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((bool)(object)o, Helper.Create(default(bool)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((bool?)(object)o, Helper.Create(default(bool)));
+    }
+
+    private static int Main()
+    {
+        bool? s = Helper.Create(default(bool));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics002.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics002.csproj
new file mode 100644
index 0000000000..8df3dd5706
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics002.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics002.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics003.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics003.cs
new file mode 100644
index 0000000000..f7f37922e1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics003.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((byte)(object)o, Helper.Create(default(byte)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((byte?)(object)o, Helper.Create(default(byte)));
+    }
+
+    private static int Main()
+    {
+        byte? s = Helper.Create(default(byte));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics003.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics003.csproj
new file mode 100644
index 0000000000..f68e8412cf
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics003.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics003.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics004.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics004.cs
new file mode 100644
index 0000000000..4cd69634f0
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics004.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of sbyte using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((sbyte)(object)o, Helper.Create(default(sbyte)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((sbyte?)(object)o, Helper.Create(default(sbyte)));
+    }
+
+    private static int Main()
+    {
+        sbyte? s = Helper.Create(default(sbyte));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics004.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics004.csproj
new file mode 100644
index 0000000000..159a1d0758
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics004.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics004.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics005.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics005.cs
new file mode 100644
index 0000000000..d287dd2805
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics005.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((short)(object)o, Helper.Create(default(short)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((short?)(object)o, Helper.Create(default(short)));
+    }
+
+    private static int Main()
+    {
+        short? s = Helper.Create(default(short));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics005.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics005.csproj
new file mode 100644
index 0000000000..14ab9bd30c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics005.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics005.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics006.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics006.cs
new file mode 100644
index 0000000000..c01ad7a9ba
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics006.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ushort using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((ushort)(object)o, Helper.Create(default(ushort)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((ushort?)(object)o, Helper.Create(default(ushort)));
+    }
+
+    private static int Main()
+    {
+        ushort? s = Helper.Create(default(ushort));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics006.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics006.csproj
new file mode 100644
index 0000000000..364517baf4
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics006.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics006.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics007.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics007.cs
new file mode 100644
index 0000000000..0bd843491e
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics007.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((int)(object)o, Helper.Create(default(int)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((int?)(object)o, Helper.Create(default(int)));
+    }
+
+    private static int Main()
+    {
+        int? s = Helper.Create(default(int));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics007.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics007.csproj
new file mode 100644
index 0000000000..8ae3fc1e2d
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics007.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics007.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics008.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics008.cs
new file mode 100644
index 0000000000..677de335f9
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics008.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of uint using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((uint)(object)o, Helper.Create(default(uint)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((uint?)(object)o, Helper.Create(default(uint)));
+    }
+
+    private static int Main()
+    {
+        uint? s = Helper.Create(default(uint));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics008.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics008.csproj
new file mode 100644
index 0000000000..f7e2878d38
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics008.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics008.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics009.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics009.cs
new file mode 100644
index 0000000000..f0a09261a3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics009.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((long)(object)o, Helper.Create(default(long)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((long?)(object)o, Helper.Create(default(long)));
+    }
+
+    private static int Main()
+    {
+        long? s = Helper.Create(default(long));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics009.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics009.csproj
new file mode 100644
index 0000000000..ed00f6912e
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics009.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics009.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics010.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics010.cs
new file mode 100644
index 0000000000..f959d29bba
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics010.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ulong using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((ulong)(object)o, Helper.Create(default(ulong)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((ulong?)(object)o, Helper.Create(default(ulong)));
+    }
+
+    private static int Main()
+    {
+        ulong? s = Helper.Create(default(ulong));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics010.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics010.csproj
new file mode 100644
index 0000000000..42b8eb556b
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics010.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics010.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics011.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics011.cs
new file mode 100644
index 0000000000..cbf4660eb3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics011.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((float)(object)o, Helper.Create(default(float)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((float?)(object)o, Helper.Create(default(float)));
+    }
+
+    private static int Main()
+    {
+        float? s = Helper.Create(default(float));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics011.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics011.csproj
new file mode 100644
index 0000000000..e334cc6169
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics011.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics011.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics012.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics012.cs
new file mode 100644
index 0000000000..44162201d5
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics012.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of double using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((double)(object)o, Helper.Create(default(double)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((double?)(object)o, Helper.Create(default(double)));
+    }
+
+    private static int Main()
+    {
+        double? s = Helper.Create(default(double));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics012.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics012.csproj
new file mode 100644
index 0000000000..23218f6723
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics012.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics012.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics013.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics013.cs
new file mode 100644
index 0000000000..1e6449e59c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics013.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((decimal)(object)o, Helper.Create(default(decimal)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((decimal?)(object)o, Helper.Create(default(decimal)));
+    }
+
+    private static int Main()
+    {
+        decimal? s = Helper.Create(default(decimal));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics013.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics013.csproj
new file mode 100644
index 0000000000..41b944adfa
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics013.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics013.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics014.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics014.cs
new file mode 100644
index 0000000000..b74e74dff8
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics014.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of IntPtr using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((IntPtr)(object)o, Helper.Create(default(IntPtr)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((IntPtr?)(object)o, Helper.Create(default(IntPtr)));
+    }
+
+    private static int Main()
+    {
+        IntPtr? s = Helper.Create(default(IntPtr));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics014.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics014.csproj
new file mode 100644
index 0000000000..6d2e397955
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics014.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics014.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics015.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics015.cs
new file mode 100644
index 0000000000..fc0d79326c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics015.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((UIntPtr)(object)o, Helper.Create(default(UIntPtr)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((UIntPtr?)(object)o, Helper.Create(default(UIntPtr)));
+    }
+
+    private static int Main()
+    {
+        UIntPtr? s = Helper.Create(default(UIntPtr));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics015.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics015.csproj
new file mode 100644
index 0000000000..29be0ad675
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics015.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics015.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics016.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics016.cs
new file mode 100644
index 0000000000..10e0c0302f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics016.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of Guid using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((Guid)(object)o, Helper.Create(default(Guid)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((Guid?)(object)o, Helper.Create(default(Guid)));
+    }
+
+    private static int Main()
+    {
+        Guid? s = Helper.Create(default(Guid));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics016.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics016.csproj
new file mode 100644
index 0000000000..d2c59314de
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics016.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics016.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics017.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics017.cs
new file mode 100644
index 0000000000..85cabc5415
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics017.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((GCHandle)(object)o, Helper.Create(default(GCHandle)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((GCHandle?)(object)o, Helper.Create(default(GCHandle)));
+    }
+
+    private static int Main()
+    {
+        GCHandle? s = Helper.Create(default(GCHandle));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics017.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics017.csproj
new file mode 100644
index 0000000000..abc935ce98
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics017.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics017.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics018.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics018.cs
new file mode 100644
index 0000000000..bef3b2524a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics018.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ByteE using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((ByteE)(object)o, Helper.Create(default(ByteE)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((ByteE?)(object)o, Helper.Create(default(ByteE)));
+    }
+
+    private static int Main()
+    {
+        ByteE? s = Helper.Create(default(ByteE));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics018.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics018.csproj
new file mode 100644
index 0000000000..41aa64b0d3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics018.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics018.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics019.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics019.cs
new file mode 100644
index 0000000000..c0b21dee27
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics019.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((IntE)(object)o, Helper.Create(default(IntE)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((IntE?)(object)o, Helper.Create(default(IntE)));
+    }
+
+    private static int Main()
+    {
+        IntE? s = Helper.Create(default(IntE));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics019.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics019.csproj
new file mode 100644
index 0000000000..8a173b60af
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics019.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics019.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics020.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics020.cs
new file mode 100644
index 0000000000..86bad94a76
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics020.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of LongE using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((LongE)(object)o, Helper.Create(default(LongE)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((LongE?)(object)o, Helper.Create(default(LongE)));
+    }
+
+    private static int Main()
+    {
+        LongE? s = Helper.Create(default(LongE));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics020.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics020.csproj
new file mode 100644
index 0000000000..246482a56c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics020.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics020.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics021.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics021.cs
new file mode 100644
index 0000000000..08693ed236
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics021.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((EmptyStruct)(object)o, Helper.Create(default(EmptyStruct)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((EmptyStruct?)(object)o, Helper.Create(default(EmptyStruct)));
+    }
+
+    private static int Main()
+    {
+        EmptyStruct? s = Helper.Create(default(EmptyStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics021.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics021.csproj
new file mode 100644
index 0000000000..d7bcc4ecd5
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics021.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics021.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics022.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics022.cs
new file mode 100644
index 0000000000..c8619cdaa3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics022.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStruct)(object)o, Helper.Create(default(NotEmptyStruct)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStruct?)(object)o, Helper.Create(default(NotEmptyStruct)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStruct? s = Helper.Create(default(NotEmptyStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics022.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics022.csproj
new file mode 100644
index 0000000000..888a86ef62
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics022.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics022.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics023.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics023.cs
new file mode 100644
index 0000000000..958783f16a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics023.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructQ)(object)o, Helper.Create(default(NotEmptyStructQ)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructQ?)(object)o, Helper.Create(default(NotEmptyStructQ)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructQ? s = Helper.Create(default(NotEmptyStructQ));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics023.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics023.csproj
new file mode 100644
index 0000000000..af1a4e0f8c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics023.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics023.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics024.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics024.cs
new file mode 100644
index 0000000000..4cb2bce39a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics024.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructA using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructA)(object)o, Helper.Create(default(NotEmptyStructA)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructA?)(object)o, Helper.Create(default(NotEmptyStructA)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructA? s = Helper.Create(default(NotEmptyStructA));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics024.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics024.csproj
new file mode 100644
index 0000000000..7dd245c2a7
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics024.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics024.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics025.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics025.cs
new file mode 100644
index 0000000000..122a594479
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics025.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructQA)(object)o, Helper.Create(default(NotEmptyStructQA)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructQA?)(object)o, Helper.Create(default(NotEmptyStructQA)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructQA? s = Helper.Create(default(NotEmptyStructQA));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics025.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics025.csproj
new file mode 100644
index 0000000000..30b88263c6
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics025.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics025.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics026.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics026.cs
new file mode 100644
index 0000000000..b456f9c54c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics026.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of EmptyStructGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((EmptyStructGen<int>)(object)o, Helper.Create(default(EmptyStructGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((EmptyStructGen<int>?)(object)o, Helper.Create(default(EmptyStructGen<int>)));
+    }
+
+    private static int Main()
+    {
+        EmptyStructGen<int>? s = Helper.Create(default(EmptyStructGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics026.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics026.csproj
new file mode 100644
index 0000000000..3d5b4c232a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics026.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics026.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics027.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics027.cs
new file mode 100644
index 0000000000..422b06474c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics027.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructGen<int>)(object)o, Helper.Create(default(NotEmptyStructGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructGen<int>?)(object)o, Helper.Create(default(NotEmptyStructGen<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructGen<int>? s = Helper.Create(default(NotEmptyStructGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics027.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics027.csproj
new file mode 100644
index 0000000000..e439a374f9
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics027.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics027.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics028.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics028.cs
new file mode 100644
index 0000000000..e85f1a34cb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics028.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructConstrainedGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGen<int>)(object)o, Helper.Create(default(NotEmptyStructConstrainedGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGen<int>?)(object)o, Helper.Create(default(NotEmptyStructConstrainedGen<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGen<int>? s = Helper.Create(default(NotEmptyStructConstrainedGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics028.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics028.csproj
new file mode 100644
index 0000000000..36a38760d5
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics028.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics028.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics029.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics029.cs
new file mode 100644
index 0000000000..9daba67941
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics029.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenA<int>)(object)o, Helper.Create(default(NotEmptyStructConstrainedGenA<int>)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenA<int>?)(object)o, Helper.Create(default(NotEmptyStructConstrainedGenA<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGenA<int>? s = Helper.Create(default(NotEmptyStructConstrainedGenA<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics029.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics029.csproj
new file mode 100644
index 0000000000..0c50406aba
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics029.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics029.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics030.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics030.cs
new file mode 100644
index 0000000000..c904e82cd0
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics030.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructConstrainedGenQ<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenQ<int>)(object)o, Helper.Create(default(NotEmptyStructConstrainedGenQ<int>)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenQ<int>?)(object)o, Helper.Create(default(NotEmptyStructConstrainedGenQ<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGenQ<int>? s = Helper.Create(default(NotEmptyStructConstrainedGenQ<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics030.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics030.csproj
new file mode 100644
index 0000000000..35cd6a9172
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics030.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics030.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics031.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics031.cs
new file mode 100644
index 0000000000..58638352b9
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics031.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenQA<int>)(object)o, Helper.Create(default(NotEmptyStructConstrainedGenQA<int>)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenQA<int>?)(object)o, Helper.Create(default(NotEmptyStructConstrainedGenQA<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGenQA<int>? s = Helper.Create(default(NotEmptyStructConstrainedGenQA<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics031.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics031.csproj
new file mode 100644
index 0000000000..45af06dedc
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics031.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics031.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics032.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics032.cs
new file mode 100644
index 0000000000..da43073fdb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics032.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NestedStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((NestedStruct)(object)o, Helper.Create(default(NestedStruct)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((NestedStruct?)(object)o, Helper.Create(default(NestedStruct)));
+    }
+
+    private static int Main()
+    {
+        NestedStruct? s = Helper.Create(default(NestedStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics032.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics032.csproj
new file mode 100644
index 0000000000..398f8be939
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics032.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics032.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics033.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics033.cs
new file mode 100644
index 0000000000..5eb0c411fa
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics033.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((NestedStructGen<int>)(object)o, Helper.Create(default(NestedStructGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((NestedStructGen<int>?)(object)o, Helper.Create(default(NestedStructGen<int>)));
+    }
+
+    private static int Main()
+    {
+        NestedStructGen<int>? s = Helper.Create(default(NestedStructGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics033.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics033.csproj
new file mode 100644
index 0000000000..bb8b1a2f9b
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics033.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics033.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics034.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics034.cs
new file mode 100644
index 0000000000..0609d960b9
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics034.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ExplicitFieldOffsetStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((ExplicitFieldOffsetStruct)(object)o, Helper.Create(default(ExplicitFieldOffsetStruct)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((ExplicitFieldOffsetStruct?)(object)o, Helper.Create(default(ExplicitFieldOffsetStruct)));
+    }
+
+    private static int Main()
+    {
+        ExplicitFieldOffsetStruct? s = Helper.Create(default(ExplicitFieldOffsetStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics034.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics034.csproj
new file mode 100644
index 0000000000..6bb3f6177b
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics034.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics034.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics037.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics037.cs
new file mode 100644
index 0000000000..31e96cc105
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics037.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((MarshalAsStruct)(object)o, Helper.Create(default(MarshalAsStruct)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((MarshalAsStruct?)(object)o, Helper.Create(default(MarshalAsStruct)));
+    }
+
+    private static int Main()
+    {
+        MarshalAsStruct? s = Helper.Create(default(MarshalAsStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics037.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics037.csproj
new file mode 100644
index 0000000000..83f4784513
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics037.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics037.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics038.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics038.cs
new file mode 100644
index 0000000000..c032132494
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics038.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementOneInterface using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((ImplementOneInterface)(object)o, Helper.Create(default(ImplementOneInterface)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((ImplementOneInterface?)(object)o, Helper.Create(default(ImplementOneInterface)));
+    }
+
+    private static int Main()
+    {
+        ImplementOneInterface? s = Helper.Create(default(ImplementOneInterface));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics038.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics038.csproj
new file mode 100644
index 0000000000..0d46f5ff4c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics038.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics038.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics039.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics039.cs
new file mode 100644
index 0000000000..a05b1103c7
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics039.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((ImplementTwoInterface)(object)o, Helper.Create(default(ImplementTwoInterface)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((ImplementTwoInterface?)(object)o, Helper.Create(default(ImplementTwoInterface)));
+    }
+
+    private static int Main()
+    {
+        ImplementTwoInterface? s = Helper.Create(default(ImplementTwoInterface));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics039.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics039.csproj
new file mode 100644
index 0000000000..eb8069805d
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics039.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics039.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics040.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics040.cs
new file mode 100644
index 0000000000..7c2fcfcc08
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics040.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementOneInterfaceGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((ImplementOneInterfaceGen<int>)(object)o, Helper.Create(default(ImplementOneInterfaceGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((ImplementOneInterfaceGen<int>?)(object)o, Helper.Create(default(ImplementOneInterfaceGen<int>)));
+    }
+
+    private static int Main()
+    {
+        ImplementOneInterfaceGen<int>? s = Helper.Create(default(ImplementOneInterfaceGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics040.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics040.csproj
new file mode 100644
index 0000000000..bd8539559b
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics040.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics040.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics041.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics041.cs
new file mode 100644
index 0000000000..535a0bd2bb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics041.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((ImplementTwoInterfaceGen<int>)(object)o, Helper.Create(default(ImplementTwoInterfaceGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((ImplementTwoInterfaceGen<int>?)(object)o, Helper.Create(default(ImplementTwoInterfaceGen<int>)));
+    }
+
+    private static int Main()
+    {
+        ImplementTwoInterfaceGen<int>? s = Helper.Create(default(ImplementTwoInterfaceGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics041.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics041.csproj
new file mode 100644
index 0000000000..11128cd0e3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics041.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics041.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics042.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics042.cs
new file mode 100644
index 0000000000..b19d98d74a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics042.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementAllInterface<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((ImplementAllInterface<int>)(object)o, Helper.Create(default(ImplementAllInterface<int>)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((ImplementAllInterface<int>?)(object)o, Helper.Create(default(ImplementAllInterface<int>)));
+    }
+
+    private static int Main()
+    {
+        ImplementAllInterface<int>? s = Helper.Create(default(ImplementAllInterface<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics042.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics042.csproj
new file mode 100644
index 0000000000..89673fb3ca
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics042.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics042.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics043.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics043.cs
new file mode 100644
index 0000000000..8f345493c8
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics043.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((WithMultipleGCHandleStruct)(object)o, Helper.Create(default(WithMultipleGCHandleStruct)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((WithMultipleGCHandleStruct?)(object)o, Helper.Create(default(WithMultipleGCHandleStruct)));
+    }
+
+    private static int Main()
+    {
+        WithMultipleGCHandleStruct? s = Helper.Create(default(WithMultipleGCHandleStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics043.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics043.csproj
new file mode 100644
index 0000000000..82144e6bb1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics043.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics043.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics044.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics044.cs
new file mode 100644
index 0000000000..9fa84b4f3a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics044.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of WithOnlyFXTypeStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((WithOnlyFXTypeStruct)(object)o, Helper.Create(default(WithOnlyFXTypeStruct)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((WithOnlyFXTypeStruct?)(object)o, Helper.Create(default(WithOnlyFXTypeStruct)));
+    }
+
+    private static int Main()
+    {
+        WithOnlyFXTypeStruct? s = Helper.Create(default(WithOnlyFXTypeStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics044.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics044.csproj
new file mode 100644
index 0000000000..57d44d948f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics044.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics044.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics045.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics045.cs
new file mode 100644
index 0000000000..ef35b7e671
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics045.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ<T>(T o)
+    {
+        return Helper.Compare((MixedAllStruct)(object)o, Helper.Create(default(MixedAllStruct)));
+    }
+
+    private static bool BoxUnboxToQ<T>(T o)
+    {
+        return Helper.Compare((MixedAllStruct?)(object)o, Helper.Create(default(MixedAllStruct)));
+    }
+
+    private static int Main()
+    {
+        MixedAllStruct? s = Helper.Create(default(MixedAllStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics045.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics045.csproj
new file mode 100644
index 0000000000..9db3f9af82
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/generics/box-unbox-generics045.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-generics045.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/app.config b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/app.config
new file mode 100644
index 0000000000..8077c95440
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/app.config
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Runtime" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.20.0" newVersion="4.0.20.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Text.Encoding" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Threading.Tasks" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.IO" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Reflection" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
+</configuration>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface001.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface001.cs
new file mode 100644
index 0000000000..3bdeaf2598
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface001.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementOneInterface using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IEmpty o)
+    {
+        return Helper.Compare((ImplementOneInterface)o, Helper.Create(default(ImplementOneInterface)));
+    }
+
+    private static bool BoxUnboxToQ(IEmpty o)
+    {
+        return Helper.Compare((ImplementOneInterface?)o, Helper.Create(default(ImplementOneInterface)));
+    }
+
+    private static int Main()
+    {
+        ImplementOneInterface? s = Helper.Create(default(ImplementOneInterface));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface001.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface001.csproj
new file mode 100644
index 0000000000..aeb1b779e3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface001.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface001.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface002.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface002.cs
new file mode 100644
index 0000000000..4e77831bda
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface002.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IEmpty o)
+    {
+        return Helper.Compare((ImplementTwoInterface)o, Helper.Create(default(ImplementTwoInterface)));
+    }
+
+    private static bool BoxUnboxToQ(IEmpty o)
+    {
+        return Helper.Compare((ImplementTwoInterface?)o, Helper.Create(default(ImplementTwoInterface)));
+    }
+
+    private static int Main()
+    {
+        ImplementTwoInterface? s = Helper.Create(default(ImplementTwoInterface));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface002.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface002.csproj
new file mode 100644
index 0000000000..2fcd0f196b
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface002.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface002.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface003.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface003.cs
new file mode 100644
index 0000000000..dcad64d26a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface003.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementOneInterfaceGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IEmptyGen<int> o)
+    {
+        return Helper.Compare((ImplementOneInterfaceGen<int>)o, Helper.Create(default(ImplementOneInterfaceGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(IEmptyGen<int> o)
+    {
+        return Helper.Compare((ImplementOneInterfaceGen<int>?)o, Helper.Create(default(ImplementOneInterfaceGen<int>)));
+    }
+
+    private static int Main()
+    {
+        ImplementOneInterfaceGen<int>? s = Helper.Create(default(ImplementOneInterfaceGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface003.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface003.csproj
new file mode 100644
index 0000000000..90f15878cb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface003.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface003.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface004.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface004.cs
new file mode 100644
index 0000000000..46bec2bf68
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface004.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IEmptyGen<int> o)
+    {
+        return Helper.Compare((ImplementTwoInterfaceGen<int>)o, Helper.Create(default(ImplementTwoInterfaceGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(IEmptyGen<int> o)
+    {
+        return Helper.Compare((ImplementTwoInterfaceGen<int>?)o, Helper.Create(default(ImplementTwoInterfaceGen<int>)));
+    }
+
+    private static int Main()
+    {
+        ImplementTwoInterfaceGen<int>? s = Helper.Create(default(ImplementTwoInterfaceGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface004.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface004.csproj
new file mode 100644
index 0000000000..c3c2b1b5a4
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface004.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface004.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface005.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface005.cs
new file mode 100644
index 0000000000..27d813b8e2
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface005.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementAllInterface<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IEmpty o)
+    {
+        return Helper.Compare((ImplementAllInterface<int>)o, Helper.Create(default(ImplementAllInterface<int>)));
+    }
+
+    private static bool BoxUnboxToQ(IEmpty o)
+    {
+        return Helper.Compare((ImplementAllInterface<int>?)o, Helper.Create(default(ImplementAllInterface<int>)));
+    }
+
+    private static int Main()
+    {
+        ImplementAllInterface<int>? s = Helper.Create(default(ImplementAllInterface<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface005.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface005.csproj
new file mode 100644
index 0000000000..99cb715fbb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface005.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface005.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface006.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface006.cs
new file mode 100644
index 0000000000..e542b8feeb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface006.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((char)o, Helper.Create(default(char)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((char?)o, Helper.Create(default(char)));
+    }
+
+    private static int Main()
+    {
+        char? s = Helper.Create(default(char));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface006.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface006.csproj
new file mode 100644
index 0000000000..89d39a4a39
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface006.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface006.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface007.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface007.cs
new file mode 100644
index 0000000000..f962e53d41
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface007.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of bool using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((bool)o, Helper.Create(default(bool)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((bool?)o, Helper.Create(default(bool)));
+    }
+
+    private static int Main()
+    {
+        bool? s = Helper.Create(default(bool));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface007.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface007.csproj
new file mode 100644
index 0000000000..d7d5b8a8f5
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface007.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface007.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface008.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface008.cs
new file mode 100644
index 0000000000..897398611f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface008.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((byte)o, Helper.Create(default(byte)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((byte?)o, Helper.Create(default(byte)));
+    }
+
+    private static int Main()
+    {
+        byte? s = Helper.Create(default(byte));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface008.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface008.csproj
new file mode 100644
index 0000000000..0602110149
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface008.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface008.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface009.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface009.cs
new file mode 100644
index 0000000000..dcfc384a95
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface009.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of sbyte using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((sbyte)o, Helper.Create(default(sbyte)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((sbyte?)o, Helper.Create(default(sbyte)));
+    }
+
+    private static int Main()
+    {
+        sbyte? s = Helper.Create(default(sbyte));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface009.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface009.csproj
new file mode 100644
index 0000000000..e6e697f5fc
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface009.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface009.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface010.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface010.cs
new file mode 100644
index 0000000000..1ec8e9f72e
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface010.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((short)o, Helper.Create(default(short)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((short?)o, Helper.Create(default(short)));
+    }
+
+    private static int Main()
+    {
+        short? s = Helper.Create(default(short));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface010.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface010.csproj
new file mode 100644
index 0000000000..fd6d193aeb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface010.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface010.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface011.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface011.cs
new file mode 100644
index 0000000000..e06543ca8a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface011.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ushort using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((ushort)o, Helper.Create(default(ushort)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((ushort?)o, Helper.Create(default(ushort)));
+    }
+
+    private static int Main()
+    {
+        ushort? s = Helper.Create(default(ushort));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface011.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface011.csproj
new file mode 100644
index 0000000000..4ecd201efd
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface011.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface011.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface012.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface012.cs
new file mode 100644
index 0000000000..58bdc7a6e5
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface012.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((int)o, Helper.Create(default(int)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((int?)o, Helper.Create(default(int)));
+    }
+
+    private static int Main()
+    {
+        int? s = Helper.Create(default(int));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface012.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface012.csproj
new file mode 100644
index 0000000000..dc86bc3635
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface012.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface012.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface013.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface013.cs
new file mode 100644
index 0000000000..e39229d64a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface013.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of uint using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((uint)o, Helper.Create(default(uint)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((uint?)o, Helper.Create(default(uint)));
+    }
+
+    private static int Main()
+    {
+        uint? s = Helper.Create(default(uint));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface013.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface013.csproj
new file mode 100644
index 0000000000..a44fac8338
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface013.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface013.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface014.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface014.cs
new file mode 100644
index 0000000000..2221517e25
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface014.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((long)o, Helper.Create(default(long)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((long?)o, Helper.Create(default(long)));
+    }
+
+    private static int Main()
+    {
+        long? s = Helper.Create(default(long));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface014.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface014.csproj
new file mode 100644
index 0000000000..6568ac8e79
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface014.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface014.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface015.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface015.cs
new file mode 100644
index 0000000000..d7991742fb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface015.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ulong using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((ulong)o, Helper.Create(default(ulong)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((ulong?)o, Helper.Create(default(ulong)));
+    }
+
+    private static int Main()
+    {
+        ulong? s = Helper.Create(default(ulong));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface015.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface015.csproj
new file mode 100644
index 0000000000..b94ba5fd1f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface015.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface015.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface016.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface016.cs
new file mode 100644
index 0000000000..f417010373
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface016.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((float)o, Helper.Create(default(float)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((float?)o, Helper.Create(default(float)));
+    }
+
+    private static int Main()
+    {
+        float? s = Helper.Create(default(float));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface016.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface016.csproj
new file mode 100644
index 0000000000..23198beede
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface016.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface016.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface017.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface017.cs
new file mode 100644
index 0000000000..ccc826bbc9
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface017.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of double using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((double)o, Helper.Create(default(double)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((double?)o, Helper.Create(default(double)));
+    }
+
+    private static int Main()
+    {
+        double? s = Helper.Create(default(double));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface017.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface017.csproj
new file mode 100644
index 0000000000..1cd2e37017
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface017.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface017.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface018.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface018.cs
new file mode 100644
index 0000000000..2152a418e0
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface018.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(IComparable o)
+    {
+        return Helper.Compare((decimal)o, Helper.Create(default(decimal)));
+    }
+
+    private static bool BoxUnboxToQ(IComparable o)
+    {
+        return Helper.Compare((decimal?)o, Helper.Create(default(decimal)));
+    }
+
+    private static int Main()
+    {
+        decimal? s = Helper.Create(default(decimal));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface018.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface018.csproj
new file mode 100644
index 0000000000..0fbff9b365
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/interface/box-unbox-interface018.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-interface018.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/app.config b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/app.config
new file mode 100644
index 0000000000..8077c95440
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/app.config
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Runtime" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.20.0" newVersion="4.0.20.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Text.Encoding" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Threading.Tasks" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.IO" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Reflection" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
+</configuration>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null001.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null001.cs
new file mode 100644
index 0000000000..7b5640a13f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null001.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of char using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((char?)o) == null;
+    }
+
+    private static int Main()
+    {
+        char? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null001.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null001.csproj
new file mode 100644
index 0000000000..08b70a8f9d
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null001.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null001.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null002.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null002.cs
new file mode 100644
index 0000000000..25b3b715a4
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null002.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((bool?)o) == null;
+    }
+
+    private static int Main()
+    {
+        bool? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null002.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null002.csproj
new file mode 100644
index 0000000000..7015f89702
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null002.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null002.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null003.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null003.cs
new file mode 100644
index 0000000000..c01bcfb0a2
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null003.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of byte using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((byte?)o) == null;
+    }
+
+    private static int Main()
+    {
+        byte? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null003.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null003.csproj
new file mode 100644
index 0000000000..01b797531a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null003.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null003.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null004.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null004.cs
new file mode 100644
index 0000000000..20d618f61f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null004.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((sbyte?)o) == null;
+    }
+
+    private static int Main()
+    {
+        sbyte? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null004.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null004.csproj
new file mode 100644
index 0000000000..51a247fb20
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null004.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null004.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null005.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null005.cs
new file mode 100644
index 0000000000..a23538eef3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null005.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of short using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((short?)o) == null;
+    }
+
+    private static int Main()
+    {
+        short? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null005.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null005.csproj
new file mode 100644
index 0000000000..34e9ff1a1f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null005.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null005.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null006.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null006.cs
new file mode 100644
index 0000000000..c48103d805
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null006.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((ushort?)o) == null;
+    }
+
+    private static int Main()
+    {
+        ushort? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null006.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null006.csproj
new file mode 100644
index 0000000000..4d60875bba
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null006.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null006.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null007.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null007.cs
new file mode 100644
index 0000000000..2935d91c7a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null007.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of int using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((int?)o) == null;
+    }
+
+    private static int Main()
+    {
+        int? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null007.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null007.csproj
new file mode 100644
index 0000000000..28c7d56c5e
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null007.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null007.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null008.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null008.cs
new file mode 100644
index 0000000000..1980350fbf
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null008.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((uint?)o) == null;
+    }
+
+    private static int Main()
+    {
+        uint? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null008.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null008.csproj
new file mode 100644
index 0000000000..c0aa858f81
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null008.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null008.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null009.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null009.cs
new file mode 100644
index 0000000000..966f0b1ebe
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null009.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of long using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((long?)o) == null;
+    }
+
+    private static int Main()
+    {
+        long? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null009.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null009.csproj
new file mode 100644
index 0000000000..5c5269d99f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null009.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null009.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null010.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null010.cs
new file mode 100644
index 0000000000..8be0349f48
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null010.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((ulong?)o) == null;
+    }
+
+    private static int Main()
+    {
+        ulong? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null010.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null010.csproj
new file mode 100644
index 0000000000..f9da5c7293
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null010.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null010.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null011.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null011.cs
new file mode 100644
index 0000000000..64fdd76342
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null011.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of float using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((float?)o) == null;
+    }
+
+    private static int Main()
+    {
+        float? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null011.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null011.csproj
new file mode 100644
index 0000000000..edcca66637
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null011.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null011.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null012.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null012.cs
new file mode 100644
index 0000000000..8de79d9b78
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null012.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((double?)o) == null;
+    }
+
+    private static int Main()
+    {
+        double? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null012.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null012.csproj
new file mode 100644
index 0000000000..9cb9c2af00
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null012.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null012.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null013.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null013.cs
new file mode 100644
index 0000000000..21fe428d63
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null013.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of decimal using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((decimal?)o) == null;
+    }
+
+    private static int Main()
+    {
+        decimal? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null013.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null013.csproj
new file mode 100644
index 0000000000..0b998f4ea0
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null013.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null013.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null014.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null014.cs
new file mode 100644
index 0000000000..b3fffdf2f1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null014.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((IntPtr?)o) == null;
+    }
+
+    private static int Main()
+    {
+        IntPtr? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null014.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null014.csproj
new file mode 100644
index 0000000000..1b256240c1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null014.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null014.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null015.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null015.cs
new file mode 100644
index 0000000000..9aa6923bba
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null015.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of UIntPtr using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((UIntPtr?)o) == null;
+    }
+
+    private static int Main()
+    {
+        UIntPtr? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null015.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null015.csproj
new file mode 100644
index 0000000000..c471a8769b
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null015.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null015.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null016.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null016.cs
new file mode 100644
index 0000000000..b57e3550eb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null016.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((Guid?)o) == null;
+    }
+
+    private static int Main()
+    {
+        Guid? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null016.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null016.csproj
new file mode 100644
index 0000000000..3084c44ff9
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null016.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null016.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null017.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null017.cs
new file mode 100644
index 0000000000..7158b97ee1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null017.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of GCHandle using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((GCHandle?)o) == null;
+    }
+
+    private static int Main()
+    {
+        GCHandle? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null017.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null017.csproj
new file mode 100644
index 0000000000..2b934897b5
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null017.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null017.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null018.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null018.cs
new file mode 100644
index 0000000000..e2467577fb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null018.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((ByteE?)o) == null;
+    }
+
+    private static int Main()
+    {
+        ByteE? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null018.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null018.csproj
new file mode 100644
index 0000000000..f0c01fbd55
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null018.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null018.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null019.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null019.cs
new file mode 100644
index 0000000000..f8a60b87ed
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null019.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of IntE using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((IntE?)o) == null;
+    }
+
+    private static int Main()
+    {
+        IntE? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null019.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null019.csproj
new file mode 100644
index 0000000000..eb69488a5a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null019.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null019.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null020.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null020.cs
new file mode 100644
index 0000000000..19f623d464
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null020.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((LongE?)o) == null;
+    }
+
+    private static int Main()
+    {
+        LongE? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null020.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null020.csproj
new file mode 100644
index 0000000000..9c64824a26
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null020.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null020.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null021.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null021.cs
new file mode 100644
index 0000000000..4e7f496ea7
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null021.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of EmptyStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((EmptyStruct?)o) == null;
+    }
+
+    private static int Main()
+    {
+        EmptyStruct? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null021.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null021.csproj
new file mode 100644
index 0000000000..2ca4c5f84a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null021.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null021.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null022.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null022.cs
new file mode 100644
index 0000000000..4da034ed98
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null022.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((NotEmptyStruct?)o) == null;
+    }
+
+    private static int Main()
+    {
+        NotEmptyStruct? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null022.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null022.csproj
new file mode 100644
index 0000000000..6fa22909ca
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null022.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null022.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null023.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null023.cs
new file mode 100644
index 0000000000..da3f017321
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null023.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructQ using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((NotEmptyStructQ?)o) == null;
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructQ? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null023.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null023.csproj
new file mode 100644
index 0000000000..6ab6af0d97
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null023.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null023.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null024.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null024.cs
new file mode 100644
index 0000000000..78a97365f1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null024.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((NotEmptyStructA?)o) == null;
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructA? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null024.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null024.csproj
new file mode 100644
index 0000000000..d85b324955
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null024.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null024.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null025.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null025.cs
new file mode 100644
index 0000000000..413fcd766a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null025.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructQA using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((NotEmptyStructQA?)o) == null;
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructQA? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null025.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null025.csproj
new file mode 100644
index 0000000000..3775e95bb6
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null025.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null025.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null026.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null026.cs
new file mode 100644
index 0000000000..ee90cdb62c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null026.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((EmptyStructGen<int>?)o) == null;
+    }
+
+    private static int Main()
+    {
+        EmptyStructGen<int>? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null026.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null026.csproj
new file mode 100644
index 0000000000..af27a4900d
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null026.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null026.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null027.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null027.cs
new file mode 100644
index 0000000000..5af5df47da
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null027.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((NotEmptyStructGen<int>?)o) == null;
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructGen<int>? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null027.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null027.csproj
new file mode 100644
index 0000000000..faa3c60fce
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null027.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null027.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null028.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null028.cs
new file mode 100644
index 0000000000..168093452f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null028.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((NotEmptyStructConstrainedGen<int>?)o) == null;
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGen<int>? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null028.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null028.csproj
new file mode 100644
index 0000000000..3edd828d80
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null028.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null028.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null029.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null029.cs
new file mode 100644
index 0000000000..dcea3c1e51
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null029.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructConstrainedGenA<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((NotEmptyStructConstrainedGenA<int>?)o) == null;
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGenA<int>? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null029.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null029.csproj
new file mode 100644
index 0000000000..56a479e9af
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null029.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null029.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null030.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null030.cs
new file mode 100644
index 0000000000..c477ca48f6
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null030.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((NotEmptyStructConstrainedGenQ<int>?)o) == null;
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGenQ<int>? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null030.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null030.csproj
new file mode 100644
index 0000000000..dbdedae88c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null030.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null030.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null031.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null031.cs
new file mode 100644
index 0000000000..690109c5b0
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null031.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructConstrainedGenQA<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((NotEmptyStructConstrainedGenQA<int>?)o) == null;
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGenQA<int>? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null031.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null031.csproj
new file mode 100644
index 0000000000..0fbc1b07c9
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null031.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null031.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null032.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null032.cs
new file mode 100644
index 0000000000..64063eb01e
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null032.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((NestedStruct?)o) == null;
+    }
+
+    private static int Main()
+    {
+        NestedStruct? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null032.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null032.csproj
new file mode 100644
index 0000000000..1877580e45
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null032.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null032.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null033.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null033.cs
new file mode 100644
index 0000000000..27021161a5
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null033.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NestedStructGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((NestedStructGen<int>?)o) == null;
+    }
+
+    private static int Main()
+    {
+        NestedStructGen<int>? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null033.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null033.csproj
new file mode 100644
index 0000000000..eec9f7c3fe
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null033.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null033.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null034.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null034.cs
new file mode 100644
index 0000000000..3d9a420bd1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null034.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((ExplicitFieldOffsetStruct?)o) == null;
+    }
+
+    private static int Main()
+    {
+        ExplicitFieldOffsetStruct? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null034.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null034.csproj
new file mode 100644
index 0000000000..c089efa520
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null034.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null034.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null037.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null037.cs
new file mode 100644
index 0000000000..b9a74dfbcf
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null037.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of MarshalAsStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((MarshalAsStruct?)o) == null;
+    }
+
+    private static int Main()
+    {
+        MarshalAsStruct? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null037.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null037.csproj
new file mode 100644
index 0000000000..464c9817ee
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null037.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null037.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null038.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null038.cs
new file mode 100644
index 0000000000..19d8d7ec23
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null038.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((ImplementOneInterface?)o) == null;
+    }
+
+    private static int Main()
+    {
+        ImplementOneInterface? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null038.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null038.csproj
new file mode 100644
index 0000000000..249e81d45b
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null038.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null038.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null039.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null039.cs
new file mode 100644
index 0000000000..7d8857fc76
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null039.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementTwoInterface using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((ImplementTwoInterface?)o) == null;
+    }
+
+    private static int Main()
+    {
+        ImplementTwoInterface? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null039.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null039.csproj
new file mode 100644
index 0000000000..fc04dfbbd0
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null039.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null039.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null040.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null040.cs
new file mode 100644
index 0000000000..7ce67b5f26
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null040.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((ImplementOneInterfaceGen<int>?)o) == null;
+    }
+
+    private static int Main()
+    {
+        ImplementOneInterfaceGen<int>? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null040.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null040.csproj
new file mode 100644
index 0000000000..33537bf735
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null040.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null040.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null041.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null041.cs
new file mode 100644
index 0000000000..1b26d309f6
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null041.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementTwoInterfaceGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((ImplementTwoInterfaceGen<int>?)o) == null;
+    }
+
+    private static int Main()
+    {
+        ImplementTwoInterfaceGen<int>? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null041.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null041.csproj
new file mode 100644
index 0000000000..6076f62109
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null041.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null041.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null042.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null042.cs
new file mode 100644
index 0000000000..cd9663cc3e
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null042.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((ImplementAllInterface<int>?)o) == null;
+    }
+
+    private static int Main()
+    {
+        ImplementAllInterface<int>? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null042.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null042.csproj
new file mode 100644
index 0000000000..58d3f1eac4
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null042.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null042.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null043.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null043.cs
new file mode 100644
index 0000000000..f87dabad38
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null043.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of WithMultipleGCHandleStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((WithMultipleGCHandleStruct?)o) == null;
+    }
+
+    private static int Main()
+    {
+        WithMultipleGCHandleStruct? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null043.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null043.csproj
new file mode 100644
index 0000000000..bb4905cfab
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null043.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null043.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null044.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null044.cs
new file mode 100644
index 0000000000..f7580d9a78
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null044.cs
@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((WithOnlyFXTypeStruct?)o) == null;
+    }
+
+    private static int Main()
+    {
+        WithOnlyFXTypeStruct? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null044.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null044.csproj
new file mode 100644
index 0000000000..9d42784506
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null044.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null044.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null045.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null045.cs
new file mode 100644
index 0000000000..a28dd4edc1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null045.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of MixedAllStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQGen<T>(T o)
+    {
+        return ((object)o) == null;
+    }
+
+    private static bool BoxUnboxToQGen<T>(T? o) where T : struct
+    {
+        return ((T?)o) == null;
+    }
+
+    private static bool BoxUnboxToNQ(object o)
+    {
+        return o == null;
+    }
+
+    private static bool BoxUnboxToQ(object o)
+    {
+        return ((MixedAllStruct?)o) == null;
+    }
+
+    private static int Main()
+    {
+        MixedAllStruct? s = null;
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null045.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null045.csproj
new file mode 100644
index 0000000000..ab3f99b3d3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/null/box-unbox-null045.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-null045.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/structdef.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/structdef.cs
new file mode 100644
index 0000000000..50eb1ce136
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/structdef.cs
@@ -0,0 +1,402 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+#pragma warning disable 0183 // The given expression is always of the provided ('X') type
+
+using System.Runtime.InteropServices;
+using System;
+//using Microsoft;
+using System.ComponentModel;
+// primitives / CLR Types
+
+// interfaces 
+public interface IEmpty { }
+public interface INotEmpty
+{
+    void DoNothing();
+}
+
+// generic interfaces 
+public interface IEmptyGen<T> { }
+public interface INotEmptyGen<T>
+{
+    void DoNothing();
+}
+
+// struct 
+public struct EmptyStruct { }
+public struct NotEmptyStruct
+{
+    public int Field;
+}
+
+public struct NotEmptyStructQ
+{
+    public int? Field;
+}
+
+public struct NotEmptyStructA
+{
+    public int[] Field;
+}
+
+public struct NotEmptyStructQA
+{
+    public int?[] Field;
+}
+
+// generic structs 
+public struct EmptyStructGen<T> { }
+public struct NotEmptyStructGen<T>
+{
+    public T Field;
+}
+
+public struct NotEmptyStructConstrainedGen<T> where T : struct
+{
+    public T Field;
+}
+
+public struct NotEmptyStructConstrainedGenA<T> where T : struct
+{
+    public T[] Field;
+}
+
+public struct NotEmptyStructConstrainedGenQ<T> where T : struct
+{
+    public T? Field;
+}
+
+public struct NotEmptyStructConstrainedGenQA<T> where T : struct
+{
+    public T?[] Field;
+}
+
+// nested struct 
+public struct NestedStruct
+{
+    public struct Nested { }
+}
+
+public struct NestedStructGen<T>
+{
+    public struct Nested { }
+}
+
+
+// struct with Field Offset
+[StructLayout(LayoutKind.Explicit)]
+public struct ExplicitFieldOffsetStruct
+{
+    [FieldOffset(0)]
+    public int Field00;
+    [FieldOffset(0x0f)]
+    public int Field15;
+}
+
+// struct with Attributes
+internal struct MarshalAsStruct
+{
+    [System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.LPWStr)]
+    public string StringField;
+}
+
+// struct implement interfaces
+internal struct ImplementOneInterface : IEmpty { }
+
+internal struct ImplementTwoInterface : IEmpty, INotEmpty
+{
+    public void DoNothing() { }
+}
+
+internal struct ImplementOneInterfaceGen<T> : IEmptyGen<T> { }
+
+internal struct ImplementTwoInterfaceGen<T> : IEmptyGen<T>, INotEmptyGen<T>
+{
+    public void DoNothing() { }
+}
+
+internal struct ImplementAllInterface<T> : IEmpty, INotEmpty, IEmptyGen<T>, INotEmptyGen<T>
+{
+    public void DoNothing() { }
+    void INotEmptyGen<T>.DoNothing() { }
+}
+
+// enums
+public enum IntE { start = 1, }
+public enum ByteE : byte { start = 1, }
+public enum LongE : long { start = 1, }
+
+
+// other intersting structs
+public struct WithMultipleGCHandleStruct
+{
+    public GCHandle H1;
+    public GCHandle H2;
+    public GCHandle H3;
+    public GCHandle H4;
+    public GCHandle H5;
+}
+
+public struct WithOnlyFXTypeStruct
+{
+    public Guid GUID;
+    public decimal DECIMAL;
+}
+
+
+public struct MixedAllStruct
+{
+    public int INT;
+    public int? IntQ;
+    public int?[] IntQA;
+    public string STRING;
+    public IntE INTE;
+    public EmptyClass EMPTYCLASS;
+    public IEmpty IEMPTY;
+    public EmptyStruct EMPTYSTRUCT;
+    public IEmptyGen<int> IEMPTYGEN;
+    public EmptyStructGen<int> EMPTYSTRUCTGEN;
+    public WithOnlyFXTypeStruct WITHONLYFXTYPESTRUCT;
+    public GCHandle GCHANDLE;
+}
+
+
+// other types
+public struct EmptyClass { }
+public struct NotEmptyClass
+{
+    public int Field;
+}
+
+public struct EmptyClassGen<T> { }
+public struct NotEmptyClassGen<T>
+{
+    public T Field;
+}
+
+public struct NotEmptyClassConstrainedGen<T> where T : class
+{
+    public T Field;
+}
+public struct NestedClass
+{
+    public struct Nested { }
+}
+
+public struct NestedClassGen<T>
+{
+    public struct Nested { }
+}
+
+internal class ImplementOneInterfaceC : IEmpty { }
+
+internal class ImplementTwoInterfaceC : IEmpty, INotEmpty
+{
+    public void DoNothing() { }
+}
+
+internal class ImplementOneInterfaceGenC<T> : IEmptyGen<T> { }
+
+internal class ImplementTwoInterfaceGenC<T> : IEmptyGen<T>, INotEmptyGen<T>
+{
+    public void DoNothing() { }
+}
+
+internal class ImplementAllInterfaceC<T> : IEmpty, INotEmpty, IEmptyGen<T>, INotEmptyGen<T>
+{
+    public void DoNothing() { }
+    void INotEmptyGen<T>.DoNothing() { }
+}
+
+public sealed class SealedClass { }
+
+public delegate void SimpleDelegate();
+public delegate void GenericDelegate<T>();
+
+
+// ExitCode
+public static class ExitCode
+{
+    public static int Failed = 101;
+    public static int Passed = 100;
+}
+
+
+// Create Value Instance
+internal static class Helper
+{
+    public static GCHandle GCHANDLE;
+    static Helper()
+    {
+        GCHANDLE = GCHandle.Alloc(System.Console.Out);
+    }
+
+    public static char Create(char val) { return 'c'; }
+    public static bool Create(bool val) { return true; }
+    public static byte Create(byte val) { return 0x08; }
+    public static sbyte Create(sbyte val) { return -0x0e; }
+    public static short Create(short val) { return -0x0f; }
+    public static ushort Create(ushort val) { return 0xff; }
+    public static int Create(int val) { return 100; }
+    public static uint Create(uint val) { return 200; }
+    public static long Create(long val) { return int.MaxValue; }
+    public static ulong Create(ulong val) { return 300; }
+    public static float Create(float val) { return 1.15f; }
+    public static double Create(double val) { return 0.05; }
+    public static decimal Create(decimal val) { return 1.0M; }
+
+    public static IntPtr Create(IntPtr val) { return (IntPtr)1000; }
+    public static UIntPtr Create(UIntPtr val) { return (UIntPtr)2000; }
+    public static Guid Create(Guid val) { return new Guid("00020810-0001-0000-C000-000000000046"); }
+    public static GCHandle Create(GCHandle val) { return GCHANDLE; }
+    public static ByteE Create(ByteE val) { return (ByteE)9; }
+    public static IntE Create(IntE val) { return (IntE)55; }
+    public static LongE Create(LongE val) { return (LongE)34; }
+    public static EmptyStruct Create(EmptyStruct val) { return new EmptyStruct(); }
+    public static NotEmptyStruct Create(NotEmptyStruct val) { NotEmptyStruct ne = new NotEmptyStruct(); ne.Field = 100; return ne; }
+    public static NotEmptyStructQ Create(NotEmptyStructQ val) { NotEmptyStructQ neq = new NotEmptyStructQ(); neq.Field = 101; return neq; }
+    public static NotEmptyStructA Create(NotEmptyStructA val) { NotEmptyStructA nea = new NotEmptyStructA(); nea.Field = new int[] { 10 }; return nea; }
+    public static NotEmptyStructQA Create(NotEmptyStructQA val) { NotEmptyStructQA neq = new NotEmptyStructQA(); neq.Field = new int?[] { 10 }; return neq; }
+    public static EmptyStructGen<int> Create(EmptyStructGen<int> val) { return new EmptyStructGen<int>(); }
+    public static NotEmptyStructGen<int> Create(NotEmptyStructGen<int> val) { NotEmptyStructGen<int> ne = new NotEmptyStructGen<int>(); ne.Field = 88; return ne; }
+    public static NotEmptyStructConstrainedGen<int> Create(NotEmptyStructConstrainedGen<int> val) { NotEmptyStructConstrainedGen<int> ne = new NotEmptyStructConstrainedGen<int>(); ne.Field = 1010; return ne; }
+    public static NotEmptyStructConstrainedGenA<int> Create(NotEmptyStructConstrainedGenA<int> val) { NotEmptyStructConstrainedGenA<int> neq = new NotEmptyStructConstrainedGenA<int>(); neq.Field = new int[] { 11 }; return neq; }
+    public static NotEmptyStructConstrainedGenQ<int> Create(NotEmptyStructConstrainedGenQ<int> val) { NotEmptyStructConstrainedGenQ<int> neq = new NotEmptyStructConstrainedGenQ<int>(); neq.Field = 12; return neq; }
+    public static NotEmptyStructConstrainedGenQA<int> Create(NotEmptyStructConstrainedGenQA<int> val) { NotEmptyStructConstrainedGenQA<int> neq = new NotEmptyStructConstrainedGenQA<int>(); neq.Field = new int?[] { 17 }; return neq; }
+    public static NestedStruct Create(NestedStruct val) { NestedStruct ns = new NestedStruct(); return ns; }
+    public static NestedStructGen<int> Create(NestedStructGen<int> val) { NestedStructGen<int> nsg = new NestedStructGen<int>(); return nsg; }
+    public static ExplicitFieldOffsetStruct Create(ExplicitFieldOffsetStruct val) { ExplicitFieldOffsetStruct epl = new ExplicitFieldOffsetStruct(); epl.Field00 = 40; epl.Field15 = 15; return epl; }
+    public static MarshalAsStruct Create(MarshalAsStruct val) { MarshalAsStruct ma = new MarshalAsStruct(); ma.StringField = "Nullable"; return ma; }
+    public static ImplementOneInterface Create(ImplementOneInterface val) { ImplementOneInterface imp = new ImplementOneInterface(); return imp; }
+    public static ImplementTwoInterface Create(ImplementTwoInterface val) { ImplementTwoInterface imp = new ImplementTwoInterface(); return imp; }
+    public static ImplementOneInterfaceGen<int> Create(ImplementOneInterfaceGen<int> val) { ImplementOneInterfaceGen<int> imp = new ImplementOneInterfaceGen<int>(); return imp; }
+    public static ImplementTwoInterfaceGen<int> Create(ImplementTwoInterfaceGen<int> val) { ImplementTwoInterfaceGen<int> imp = new ImplementTwoInterfaceGen<int>(); return imp; }
+    public static ImplementAllInterface<int> Create(ImplementAllInterface<int> val) { ImplementAllInterface<int> imp = new ImplementAllInterface<int>(); return imp; }
+    public static WithMultipleGCHandleStruct Create(WithMultipleGCHandleStruct val)
+    { WithMultipleGCHandleStruct mgch = new WithMultipleGCHandleStruct(); mgch.H1 = GCHANDLE; mgch.H2 = GCHANDLE; mgch.H3 = GCHANDLE; mgch.H4 = GCHANDLE; mgch.H5 = GCHANDLE; return mgch; }
+    public static WithOnlyFXTypeStruct Create(WithOnlyFXTypeStruct val) { WithOnlyFXTypeStruct wofx = new WithOnlyFXTypeStruct(); wofx.DECIMAL = 50.0m; wofx.GUID = Create(default(Guid)); return wofx; }
+    public static MixedAllStruct Create(MixedAllStruct val)
+    {
+        MixedAllStruct mas;
+        mas.INT = 10;
+        mas.IntQ = null;
+        mas.IntQA = new int?[] { 10 };
+        mas.STRING = "Nullable";
+        mas.INTE = Create(default(IntE));
+        mas.EMPTYCLASS = new EmptyClass();
+        mas.IEMPTY = Create(default(ImplementOneInterface));
+        mas.EMPTYSTRUCT = Create(default(EmptyStruct));
+        mas.IEMPTYGEN = Create(default(ImplementOneInterfaceGen<int>));
+        mas.EMPTYSTRUCTGEN = Create(default(EmptyStructGen<int>));
+        mas.WITHONLYFXTYPESTRUCT = Create(default(WithOnlyFXTypeStruct));
+        mas.GCHANDLE = Create(default(GCHandle));
+
+        return mas;
+    }
+
+    public static bool Compare(char val, char val1) { return val == val1; }
+    public static bool Compare(bool val, bool val1) { return val == val1; }
+    public static bool Compare(byte val, byte val1) { return val == val1; }
+    public static bool Compare(sbyte val, sbyte val1) { return val == val1; }
+    public static bool Compare(short val, short val1) { return val == val1; }
+    public static bool Compare(ushort val, ushort val1) { return val == val1; }
+    public static bool Compare(int val, int val1) { return val == val1; }
+    public static bool Compare(uint val, uint val1) { return val == val1; }
+    public static bool Compare(long val, long val1) { return val == val1; }
+    public static bool Compare(ulong val, ulong val1) { return val == val1; }
+    public static bool Compare(float val, float val1) { return val == val1; }
+    public static bool Compare(double val, double val1) { return val == val1; }
+    public static bool Compare(decimal val, decimal val1) { return val == val1; }
+
+    public static bool Compare(IntPtr val, IntPtr val1) { return val == val1; }
+    public static bool Compare(UIntPtr val, UIntPtr val1) { return val == val1; }
+    public static bool Compare(Guid val, Guid val1) { return val == val1; }
+    public static bool Compare(GCHandle val, GCHandle val1) { return val == val1; }
+    public static bool Compare(ByteE val, ByteE val1) { return val == val1; }
+    public static bool Compare(IntE val, IntE val1) { return val == val1; }
+    public static bool Compare(LongE val, LongE val1) { return val == val1; }
+    public static bool Compare(EmptyStruct val, EmptyStruct val1) { return val.Equals(val1); }
+    public static bool Compare(NotEmptyStruct val, NotEmptyStruct val1) { return val.Field == val1.Field; }
+    public static bool Compare(NotEmptyStructQ val, NotEmptyStructQ val1) { return val.Field == val1.Field; }
+    public static bool Compare(NotEmptyStructA val, NotEmptyStructA val1) { return val.Field[0] == val1.Field[0]; }
+    public static bool Compare(NotEmptyStructQA val, NotEmptyStructQA val1) { return val.Field[0] == val1.Field[0]; }
+    public static bool Compare(EmptyStructGen<int> val, EmptyStructGen<int> val1) { return val.Equals(val1); }
+    public static bool Compare(NotEmptyStructGen<int> val, NotEmptyStructGen<int> val1) { return val.Field == val1.Field; }
+    public static bool Compare(NotEmptyStructConstrainedGen<int> val, NotEmptyStructConstrainedGen<int> val1) { return val.Field == val1.Field; }
+    public static bool Compare(NotEmptyStructConstrainedGenA<int> val, NotEmptyStructConstrainedGenA<int> val1) { return val.Field[0] == val1.Field[0]; }
+    public static bool Compare(NotEmptyStructConstrainedGenQ<int> val, NotEmptyStructConstrainedGenQ<int> val1) { return val.Field == val1.Field; }
+    public static bool Compare(NotEmptyStructConstrainedGenQA<int> val, NotEmptyStructConstrainedGenQA<int> val1) { return val.Field[0] == val1.Field[0]; }
+    public static bool Compare(NestedStruct val, NestedStruct val1) { return val.Equals(val1); }
+    public static bool Compare(NestedStructGen<int> val, NestedStructGen<int> val1) { return val.Equals(val1); }
+    public static bool Compare(ExplicitFieldOffsetStruct val, ExplicitFieldOffsetStruct val1) { return (val.Field00 == val1.Field00) && (val.Field15 == val1.Field15); }
+    public static bool Compare(MarshalAsStruct val, MarshalAsStruct val1) { return val.Equals(val1); }
+    public static bool Compare(ImplementOneInterface val, ImplementOneInterface val1) { return (val is IEmpty) && val.Equals(val1); }
+    public static bool Compare(ImplementTwoInterface val, ImplementTwoInterface val1) { return (val is IEmpty) && val is INotEmpty && val.Equals(val1); }
+    public static bool Compare(ImplementOneInterfaceGen<int> val, ImplementOneInterfaceGen<int> val1) { return val is IEmptyGen<int> && val.Equals(val1); }
+    public static bool Compare(ImplementTwoInterfaceGen<int> val, ImplementTwoInterfaceGen<int> val1) { return val is IEmptyGen<int> && val is INotEmptyGen<int> && val.Equals(val1); }
+    public static bool Compare(ImplementAllInterface<int> val, ImplementAllInterface<int> val1) { return val is IEmpty && val is INotEmpty && val is IEmptyGen<int> && val is INotEmptyGen<int> && val.Equals(val1); }
+    public static bool Compare(WithMultipleGCHandleStruct val, WithMultipleGCHandleStruct val1)
+    { return val.H1 == val1.H1 && val.H2 == val1.H2 && val.H3 == val1.H3 && val.H4 == val1.H4 && val.H5 == val1.H5; }
+    public static bool Compare(WithOnlyFXTypeStruct val, WithOnlyFXTypeStruct val1) { return val.GUID == val1.GUID && val.DECIMAL == val1.DECIMAL; }
+    public static bool Compare(MixedAllStruct val, MixedAllStruct val1)
+    {
+        return val.INT == val1.INT &&
+        val.IntQ == val1.IntQ &&
+        val.IntQA[0] == val1.IntQA[0] &&
+        val.STRING == val1.STRING &&
+        val.INTE == val1.INTE &&
+        val.EMPTYCLASS.Equals(val1.EMPTYCLASS) &&
+        val.IEMPTY.Equals(val1.IEMPTY) &&
+        Compare(val.EMPTYSTRUCT, val1.EMPTYSTRUCT) &&
+        val.IEMPTYGEN.Equals(val1.IEMPTYGEN) &&
+        Compare(val.EMPTYSTRUCTGEN, val1.EMPTYSTRUCTGEN) &&
+        Compare(val.WITHONLYFXTYPESTRUCT, val1.WITHONLYFXTYPESTRUCT) &&
+       Compare(val.GCHANDLE, val1.GCHANDLE);
+    }
+
+    public static bool Compare(char? val, char val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(bool? val, bool val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(byte? val, byte val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(sbyte? val, sbyte val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(short? val, short val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(ushort? val, ushort val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(int? val, int val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(uint? val, uint val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(long? val, long val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(ulong? val, ulong val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(float? val, float val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(double? val, double val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(decimal? val, decimal val1) { return val == null ? false : Compare(val.Value, val1); }
+
+    public static bool Compare(IntPtr? val, IntPtr val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(UIntPtr? val, UIntPtr val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(Guid? val, Guid val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(GCHandle? val, GCHandle val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(ByteE? val, ByteE val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(IntE? val, IntE val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(LongE? val, LongE val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(EmptyStruct? val, EmptyStruct val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(NotEmptyStruct? val, NotEmptyStruct val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(NotEmptyStructQ? val, NotEmptyStructQ val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(NotEmptyStructA? val, NotEmptyStructA val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(NotEmptyStructQA? val, NotEmptyStructQA val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(EmptyStructGen<int>? val, EmptyStructGen<int> val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(NotEmptyStructGen<int>? val, NotEmptyStructGen<int> val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(NotEmptyStructConstrainedGen<int>? val, NotEmptyStructConstrainedGen<int> val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(NotEmptyStructConstrainedGenA<int>? val, NotEmptyStructConstrainedGenA<int> val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(NotEmptyStructConstrainedGenQ<int>? val, NotEmptyStructConstrainedGenQ<int> val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(NotEmptyStructConstrainedGenQA<int>? val, NotEmptyStructConstrainedGenQA<int> val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(NestedStruct? val, NestedStruct val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(NestedStructGen<int>? val, NestedStructGen<int> val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(ExplicitFieldOffsetStruct? val, ExplicitFieldOffsetStruct val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(MarshalAsStruct? val, MarshalAsStruct val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(ImplementOneInterface? val, ImplementOneInterface val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(ImplementTwoInterface? val, ImplementTwoInterface val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(ImplementOneInterfaceGen<int>? val, ImplementOneInterfaceGen<int> val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(ImplementTwoInterfaceGen<int>? val, ImplementTwoInterfaceGen<int> val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(ImplementAllInterface<int>? val, ImplementAllInterface<int> val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(WithMultipleGCHandleStruct? val, WithMultipleGCHandleStruct val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(WithOnlyFXTypeStruct? val, WithOnlyFXTypeStruct val1) { return val == null ? false : Compare(val.Value, val1); }
+    public static bool Compare(MixedAllStruct? val, MixedAllStruct val1) { return val == null ? false : Compare(val.Value, val1); }
+}
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/app.config b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/app.config
new file mode 100644
index 0000000000..8077c95440
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/app.config
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Runtime" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.20.0" newVersion="4.0.20.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Text.Encoding" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Threading.Tasks" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.IO" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Reflection" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.10.0" newVersion="4.0.10.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
+</configuration>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value001.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value001.cs
new file mode 100644
index 0000000000..d439428c69
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value001.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of char using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((char)o, Helper.Create(default(char)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((char?)o, Helper.Create(default(char)));
+    }
+
+    private static int Main()
+    {
+        char? s = Helper.Create(default(char));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value001.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value001.csproj
new file mode 100644
index 0000000000..d97717033c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value001.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value001.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value002.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value002.cs
new file mode 100644
index 0000000000..94c402e821
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value002.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((bool)o, Helper.Create(default(bool)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((bool?)o, Helper.Create(default(bool)));
+    }
+
+    private static int Main()
+    {
+        bool? s = Helper.Create(default(bool));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value002.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value002.csproj
new file mode 100644
index 0000000000..8b4e7f3026
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value002.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value002.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value003.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value003.cs
new file mode 100644
index 0000000000..54bb9cc981
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value003.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of byte using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((byte)o, Helper.Create(default(byte)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((byte?)o, Helper.Create(default(byte)));
+    }
+
+    private static int Main()
+    {
+        byte? s = Helper.Create(default(byte));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value003.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value003.csproj
new file mode 100644
index 0000000000..d4cd7dafcc
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value003.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value003.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value004.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value004.cs
new file mode 100644
index 0000000000..ba80a63210
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value004.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((sbyte)o, Helper.Create(default(sbyte)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((sbyte?)o, Helper.Create(default(sbyte)));
+    }
+
+    private static int Main()
+    {
+        sbyte? s = Helper.Create(default(sbyte));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value004.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value004.csproj
new file mode 100644
index 0000000000..061dd18eb1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value004.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value004.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value005.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value005.cs
new file mode 100644
index 0000000000..b571ca6dc1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value005.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of short using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((short)o, Helper.Create(default(short)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((short?)o, Helper.Create(default(short)));
+    }
+
+    private static int Main()
+    {
+        short? s = Helper.Create(default(short));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value005.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value005.csproj
new file mode 100644
index 0000000000..6d67860360
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value005.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value005.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value006.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value006.cs
new file mode 100644
index 0000000000..153f311d79
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value006.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((ushort)o, Helper.Create(default(ushort)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((ushort?)o, Helper.Create(default(ushort)));
+    }
+
+    private static int Main()
+    {
+        ushort? s = Helper.Create(default(ushort));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value006.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value006.csproj
new file mode 100644
index 0000000000..a775ea3865
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value006.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value006.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value007.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value007.cs
new file mode 100644
index 0000000000..d57b7b34e6
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value007.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of int using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((int)o, Helper.Create(default(int)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((int?)o, Helper.Create(default(int)));
+    }
+
+    private static int Main()
+    {
+        int? s = Helper.Create(default(int));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value007.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value007.csproj
new file mode 100644
index 0000000000..99e41e96ba
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value007.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value007.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value008.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value008.cs
new file mode 100644
index 0000000000..14aab701ab
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value008.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((uint)o, Helper.Create(default(uint)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((uint?)o, Helper.Create(default(uint)));
+    }
+
+    private static int Main()
+    {
+        uint? s = Helper.Create(default(uint));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value008.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value008.csproj
new file mode 100644
index 0000000000..6cbb6c4edc
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value008.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value008.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value009.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value009.cs
new file mode 100644
index 0000000000..e96ebfff19
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value009.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of long using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((long)o, Helper.Create(default(long)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((long?)o, Helper.Create(default(long)));
+    }
+
+    private static int Main()
+    {
+        long? s = Helper.Create(default(long));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value009.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value009.csproj
new file mode 100644
index 0000000000..15bebb3ca9
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value009.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value009.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value010.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value010.cs
new file mode 100644
index 0000000000..11d1a86a23
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value010.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((ulong)o, Helper.Create(default(ulong)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((ulong?)o, Helper.Create(default(ulong)));
+    }
+
+    private static int Main()
+    {
+        ulong? s = Helper.Create(default(ulong));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value010.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value010.csproj
new file mode 100644
index 0000000000..c1b9759eab
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value010.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value010.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value011.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value011.cs
new file mode 100644
index 0000000000..4bf7b50a86
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value011.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of float using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((float)o, Helper.Create(default(float)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((float?)o, Helper.Create(default(float)));
+    }
+
+    private static int Main()
+    {
+        float? s = Helper.Create(default(float));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value011.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value011.csproj
new file mode 100644
index 0000000000..78414c793a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value011.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value011.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value012.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value012.cs
new file mode 100644
index 0000000000..801d0c3cc5
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value012.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((double)o, Helper.Create(default(double)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((double?)o, Helper.Create(default(double)));
+    }
+
+    private static int Main()
+    {
+        double? s = Helper.Create(default(double));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value012.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value012.csproj
new file mode 100644
index 0000000000..b4ed69aa66
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value012.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value012.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value013.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value013.cs
new file mode 100644
index 0000000000..215bcf5306
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value013.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of decimal using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((decimal)o, Helper.Create(default(decimal)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((decimal?)o, Helper.Create(default(decimal)));
+    }
+
+    private static int Main()
+    {
+        decimal? s = Helper.Create(default(decimal));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value013.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value013.csproj
new file mode 100644
index 0000000000..0d84d084d2
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value013.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value013.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value014.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value014.cs
new file mode 100644
index 0000000000..98d3936b1f
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value014.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((IntPtr)o, Helper.Create(default(IntPtr)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((IntPtr?)o, Helper.Create(default(IntPtr)));
+    }
+
+    private static int Main()
+    {
+        IntPtr? s = Helper.Create(default(IntPtr));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value014.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value014.csproj
new file mode 100644
index 0000000000..6724b721a3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value014.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value014.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value015.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value015.cs
new file mode 100644
index 0000000000..c440f08357
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value015.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of UIntPtr using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((UIntPtr)o, Helper.Create(default(UIntPtr)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((UIntPtr?)o, Helper.Create(default(UIntPtr)));
+    }
+
+    private static int Main()
+    {
+        UIntPtr? s = Helper.Create(default(UIntPtr));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value015.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value015.csproj
new file mode 100644
index 0000000000..5c6427eea2
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value015.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value015.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value016.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value016.cs
new file mode 100644
index 0000000000..73d8804610
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value016.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((Guid)o, Helper.Create(default(Guid)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((Guid?)o, Helper.Create(default(Guid)));
+    }
+
+    private static int Main()
+    {
+        Guid? s = Helper.Create(default(Guid));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value016.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value016.csproj
new file mode 100644
index 0000000000..ae93a50971
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value016.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value016.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value017.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value017.cs
new file mode 100644
index 0000000000..a4c9898441
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value017.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of GCHandle using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((GCHandle)o, Helper.Create(default(GCHandle)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((GCHandle?)o, Helper.Create(default(GCHandle)));
+    }
+
+    private static int Main()
+    {
+        GCHandle? s = Helper.Create(default(GCHandle));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value017.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value017.csproj
new file mode 100644
index 0000000000..e1b34d0fe0
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value017.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value017.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value018.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value018.cs
new file mode 100644
index 0000000000..37eb5a0900
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value018.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((ByteE)o, Helper.Create(default(ByteE)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((ByteE?)o, Helper.Create(default(ByteE)));
+    }
+
+    private static int Main()
+    {
+        ByteE? s = Helper.Create(default(ByteE));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value018.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value018.csproj
new file mode 100644
index 0000000000..e1d7e6e656
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value018.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value018.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value019.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value019.cs
new file mode 100644
index 0000000000..a4dcc454ed
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value019.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of IntE using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((IntE)o, Helper.Create(default(IntE)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((IntE?)o, Helper.Create(default(IntE)));
+    }
+
+    private static int Main()
+    {
+        IntE? s = Helper.Create(default(IntE));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value019.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value019.csproj
new file mode 100644
index 0000000000..50e698cd88
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value019.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value019.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value020.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value020.cs
new file mode 100644
index 0000000000..c6f95c75a5
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value020.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((LongE)o, Helper.Create(default(LongE)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((LongE?)o, Helper.Create(default(LongE)));
+    }
+
+    private static int Main()
+    {
+        LongE? s = Helper.Create(default(LongE));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value020.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value020.csproj
new file mode 100644
index 0000000000..70efada5a1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value020.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value020.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value021.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value021.cs
new file mode 100644
index 0000000000..750bc0fa81
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value021.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of EmptyStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((EmptyStruct)o, Helper.Create(default(EmptyStruct)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((EmptyStruct?)o, Helper.Create(default(EmptyStruct)));
+    }
+
+    private static int Main()
+    {
+        EmptyStruct? s = Helper.Create(default(EmptyStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value021.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value021.csproj
new file mode 100644
index 0000000000..eefd3c5748
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value021.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value021.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value022.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value022.cs
new file mode 100644
index 0000000000..ef940a3149
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value022.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStruct)o, Helper.Create(default(NotEmptyStruct)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStruct?)o, Helper.Create(default(NotEmptyStruct)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStruct? s = Helper.Create(default(NotEmptyStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value022.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value022.csproj
new file mode 100644
index 0000000000..d8b17cc133
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value022.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value022.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value023.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value023.cs
new file mode 100644
index 0000000000..6ae51b44bc
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value023.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructQ using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructQ)o, Helper.Create(default(NotEmptyStructQ)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructQ?)o, Helper.Create(default(NotEmptyStructQ)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructQ? s = Helper.Create(default(NotEmptyStructQ));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value023.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value023.csproj
new file mode 100644
index 0000000000..392ad1e382
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value023.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value023.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value024.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value024.cs
new file mode 100644
index 0000000000..6023a2ad3a
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value024.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructA)o, Helper.Create(default(NotEmptyStructA)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructA?)o, Helper.Create(default(NotEmptyStructA)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructA? s = Helper.Create(default(NotEmptyStructA));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value024.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value024.csproj
new file mode 100644
index 0000000000..b9c49cf2ef
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value024.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value024.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value025.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value025.cs
new file mode 100644
index 0000000000..f2de5887a4
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value025.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructQA using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructQA)o, Helper.Create(default(NotEmptyStructQA)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructQA?)o, Helper.Create(default(NotEmptyStructQA)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructQA? s = Helper.Create(default(NotEmptyStructQA));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value025.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value025.csproj
new file mode 100644
index 0000000000..6946188211
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value025.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value025.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value026.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value026.cs
new file mode 100644
index 0000000000..b10570e4c3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value026.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((EmptyStructGen<int>)o, Helper.Create(default(EmptyStructGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((EmptyStructGen<int>?)o, Helper.Create(default(EmptyStructGen<int>)));
+    }
+
+    private static int Main()
+    {
+        EmptyStructGen<int>? s = Helper.Create(default(EmptyStructGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value026.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value026.csproj
new file mode 100644
index 0000000000..11fd07c62c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value026.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value026.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value027.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value027.cs
new file mode 100644
index 0000000000..7536471987
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value027.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructGen<int>)o, Helper.Create(default(NotEmptyStructGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructGen<int>?)o, Helper.Create(default(NotEmptyStructGen<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructGen<int>? s = Helper.Create(default(NotEmptyStructGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value027.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value027.csproj
new file mode 100644
index 0000000000..a94ac3b9d5
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value027.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value027.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value028.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value028.cs
new file mode 100644
index 0000000000..cb290c7585
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value028.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGen<int>)o, Helper.Create(default(NotEmptyStructConstrainedGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGen<int>?)o, Helper.Create(default(NotEmptyStructConstrainedGen<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGen<int>? s = Helper.Create(default(NotEmptyStructConstrainedGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value028.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value028.csproj
new file mode 100644
index 0000000000..2d6afa3bc3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value028.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value028.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value029.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value029.cs
new file mode 100644
index 0000000000..bcfcc00d7b
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value029.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructConstrainedGenA<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenA<int>)o, Helper.Create(default(NotEmptyStructConstrainedGenA<int>)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenA<int>?)o, Helper.Create(default(NotEmptyStructConstrainedGenA<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGenA<int>? s = Helper.Create(default(NotEmptyStructConstrainedGenA<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value029.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value029.csproj
new file mode 100644
index 0000000000..15f30dfc08
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value029.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value029.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value030.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value030.cs
new file mode 100644
index 0000000000..dd864ad305
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value030.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenQ<int>)o, Helper.Create(default(NotEmptyStructConstrainedGenQ<int>)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenQ<int>?)o, Helper.Create(default(NotEmptyStructConstrainedGenQ<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGenQ<int>? s = Helper.Create(default(NotEmptyStructConstrainedGenQ<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value030.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value030.csproj
new file mode 100644
index 0000000000..448c75140b
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value030.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value030.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value031.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value031.cs
new file mode 100644
index 0000000000..222745cdb0
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value031.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NotEmptyStructConstrainedGenQA<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenQA<int>)o, Helper.Create(default(NotEmptyStructConstrainedGenQA<int>)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((NotEmptyStructConstrainedGenQA<int>?)o, Helper.Create(default(NotEmptyStructConstrainedGenQA<int>)));
+    }
+
+    private static int Main()
+    {
+        NotEmptyStructConstrainedGenQA<int>? s = Helper.Create(default(NotEmptyStructConstrainedGenQA<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value031.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value031.csproj
new file mode 100644
index 0000000000..ccbae7df36
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value031.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value031.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value032.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value032.cs
new file mode 100644
index 0000000000..a17ae71a8d
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value032.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((NestedStruct)o, Helper.Create(default(NestedStruct)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((NestedStruct?)o, Helper.Create(default(NestedStruct)));
+    }
+
+    private static int Main()
+    {
+        NestedStruct? s = Helper.Create(default(NestedStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value032.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value032.csproj
new file mode 100644
index 0000000000..1cb35d307d
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value032.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value032.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value033.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value033.cs
new file mode 100644
index 0000000000..e49168ff32
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value033.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of NestedStructGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((NestedStructGen<int>)o, Helper.Create(default(NestedStructGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((NestedStructGen<int>?)o, Helper.Create(default(NestedStructGen<int>)));
+    }
+
+    private static int Main()
+    {
+        NestedStructGen<int>? s = Helper.Create(default(NestedStructGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value033.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value033.csproj
new file mode 100644
index 0000000000..14ec5d7f06
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value033.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value033.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value034.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value034.cs
new file mode 100644
index 0000000000..3f679907d7
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value034.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((ExplicitFieldOffsetStruct)o, Helper.Create(default(ExplicitFieldOffsetStruct)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((ExplicitFieldOffsetStruct?)o, Helper.Create(default(ExplicitFieldOffsetStruct)));
+    }
+
+    private static int Main()
+    {
+        ExplicitFieldOffsetStruct? s = Helper.Create(default(ExplicitFieldOffsetStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value034.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value034.csproj
new file mode 100644
index 0000000000..cba13d1d32
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value034.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value034.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value037.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value037.cs
new file mode 100644
index 0000000000..59254c6e82
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value037.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of MarshalAsStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((MarshalAsStruct)o, Helper.Create(default(MarshalAsStruct)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((MarshalAsStruct?)o, Helper.Create(default(MarshalAsStruct)));
+    }
+
+    private static int Main()
+    {
+        MarshalAsStruct? s = Helper.Create(default(MarshalAsStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value037.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value037.csproj
new file mode 100644
index 0000000000..0f53d774ce
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value037.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value037.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value038.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value038.cs
new file mode 100644
index 0000000000..6f157d8565
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value038.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((ImplementOneInterface)o, Helper.Create(default(ImplementOneInterface)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((ImplementOneInterface?)o, Helper.Create(default(ImplementOneInterface)));
+    }
+
+    private static int Main()
+    {
+        ImplementOneInterface? s = Helper.Create(default(ImplementOneInterface));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value038.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value038.csproj
new file mode 100644
index 0000000000..c430d1e79b
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value038.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value038.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value039.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value039.cs
new file mode 100644
index 0000000000..cec5c0fa1c
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value039.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementTwoInterface using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((ImplementTwoInterface)o, Helper.Create(default(ImplementTwoInterface)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((ImplementTwoInterface?)o, Helper.Create(default(ImplementTwoInterface)));
+    }
+
+    private static int Main()
+    {
+        ImplementTwoInterface? s = Helper.Create(default(ImplementTwoInterface));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value039.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value039.csproj
new file mode 100644
index 0000000000..da46f74e14
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value039.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value039.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value040.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value040.cs
new file mode 100644
index 0000000000..c027001ab1
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value040.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((ImplementOneInterfaceGen<int>)o, Helper.Create(default(ImplementOneInterfaceGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((ImplementOneInterfaceGen<int>?)o, Helper.Create(default(ImplementOneInterfaceGen<int>)));
+    }
+
+    private static int Main()
+    {
+        ImplementOneInterfaceGen<int>? s = Helper.Create(default(ImplementOneInterfaceGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value040.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value040.csproj
new file mode 100644
index 0000000000..ca62a0bb42
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value040.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value040.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value041.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value041.cs
new file mode 100644
index 0000000000..ffc3ad3fbf
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value041.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of ImplementTwoInterfaceGen<int> using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((ImplementTwoInterfaceGen<int>)o, Helper.Create(default(ImplementTwoInterfaceGen<int>)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((ImplementTwoInterfaceGen<int>?)o, Helper.Create(default(ImplementTwoInterfaceGen<int>)));
+    }
+
+    private static int Main()
+    {
+        ImplementTwoInterfaceGen<int>? s = Helper.Create(default(ImplementTwoInterfaceGen<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value041.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value041.csproj
new file mode 100644
index 0000000000..c3fa4e1207
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value041.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value041.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value042.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value042.cs
new file mode 100644
index 0000000000..387bcdda35
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value042.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((ImplementAllInterface<int>)o, Helper.Create(default(ImplementAllInterface<int>)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((ImplementAllInterface<int>?)o, Helper.Create(default(ImplementAllInterface<int>)));
+    }
+
+    private static int Main()
+    {
+        ImplementAllInterface<int>? s = Helper.Create(default(ImplementAllInterface<int>));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value042.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value042.csproj
new file mode 100644
index 0000000000..33ac731dc0
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value042.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value042.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value043.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value043.cs
new file mode 100644
index 0000000000..1808491cf3
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value043.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of WithMultipleGCHandleStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((WithMultipleGCHandleStruct)o, Helper.Create(default(WithMultipleGCHandleStruct)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((WithMultipleGCHandleStruct?)o, Helper.Create(default(WithMultipleGCHandleStruct)));
+    }
+
+    private static int Main()
+    {
+        WithMultipleGCHandleStruct? s = Helper.Create(default(WithMultipleGCHandleStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value043.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value043.csproj
new file mode 100644
index 0000000000..91c79d5477
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value043.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value043.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value044.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value044.cs
new file mode 100644
index 0000000000..a79f299d69
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value044.cs
@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((WithOnlyFXTypeStruct)o, Helper.Create(default(WithOnlyFXTypeStruct)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((WithOnlyFXTypeStruct?)o, Helper.Create(default(WithOnlyFXTypeStruct)));
+    }
+
+    private static int Main()
+    {
+        WithOnlyFXTypeStruct? s = Helper.Create(default(WithOnlyFXTypeStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value044.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value044.csproj
new file mode 100644
index 0000000000..8761d9ce10
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value044.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value044.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value045.cs b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value045.cs
new file mode 100644
index 0000000000..351036dbeb
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value045.cs
@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+// <Area> Nullable - Box-Unbox </Area>
+// <Title> Nullable type with unbox box expr  </Title>
+// <Description>  
+// checking type of MixedAllStruct using is operator
+// </Description> 
+// <RelatedBugs> </RelatedBugs>  
+//<Expects Status=success></Expects>
+// <Code> 
+
+
+using System.Runtime.InteropServices;
+using System;
+
+internal class NullableTest
+{
+    private static bool BoxUnboxToNQ(ValueType o)
+    {
+        return Helper.Compare((MixedAllStruct)o, Helper.Create(default(MixedAllStruct)));
+    }
+
+    private static bool BoxUnboxToQ(ValueType o)
+    {
+        return Helper.Compare((MixedAllStruct?)o, Helper.Create(default(MixedAllStruct)));
+    }
+
+    private static int Main()
+    {
+        MixedAllStruct? s = Helper.Create(default(MixedAllStruct));
+
+        if (BoxUnboxToNQ(s) && BoxUnboxToQ(s))
+            return ExitCode.Passed;
+        else
+            return ExitCode.Failed;
+    }
+}
+
+
diff --git a/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value045.csproj b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value045.csproj
new file mode 100644
index 0000000000..8549fd43c4
--- /dev/null
+++ b/tests/src/JIT/jit64/valuetypes/nullable/box-unbox/value/box-unbox-value045.csproj
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <RestorePackages>true</RestorePackages>
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="box-unbox-value045.cs" />
+    <Compile Include="..\structdef.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="$(JitPackagesConfigFileDirectory)minimal\project.json" />
+    <None Include="app.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>
+\ No newline at end of file
author	Pat Gavlin <pagavlin@microsoft.com>	2015-12-04 14:22:14 -0800
committer	Pat Gavlin <pagavlin@microsoft.com>	2015-12-04 15:57:25 -0800
commit	d999a0aa9df21107e213f1c491b8961838e47a2e (patch)
tree	83878ac83ddac7b33ec7669f0eb122abe1576a76 /tests/src/JIT/jit64/valuetypes/nullable/box-unbox
parent	4feb6c40dd4d60783b54d8b58431bf069c143796 (diff)
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