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author | Andy Ayers <andya@microsoft.com> | 2017-04-11 14:31:11 -0700 |
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committer | GitHub <noreply@github.com> | 2017-04-11 14:31:11 -0700 |
commit | 98bb73baa8ce24b883669879575c162fcb591ce2 (patch) | |
tree | d6514fb709348f80bd8d1ad9bf20d604c0e74941 /tests | |
parent | 574803904f3dfb9afa0691c8c675c878c67d2e22 (diff) | |
parent | a9044a132b4807695d386181cf55bb952826e350 (diff) | |
download | coreclr-98bb73baa8ce24b883669879575c162fcb591ce2.tar.gz coreclr-98bb73baa8ce24b883669879575c162fcb591ce2.tar.bz2 coreclr-98bb73baa8ce24b883669879575c162fcb591ce2.zip |
Merge pull request #10867 from AndyAyersMS/FixSingleDefBug
Jit: fix issue with single-def type propagation
Diffstat (limited to 'tests')
-rw-r--r-- | tests/src/JIT/opt/Devirtualization/GitHub_10858.cs | 46 | ||||
-rw-r--r-- | tests/src/JIT/opt/Devirtualization/GitHub_10858.csproj | 37 |
2 files changed, 83 insertions, 0 deletions
diff --git a/tests/src/JIT/opt/Devirtualization/GitHub_10858.cs b/tests/src/JIT/opt/Devirtualization/GitHub_10858.cs new file mode 100644 index 0000000000..a02d025593 --- /dev/null +++ b/tests/src/JIT/opt/Devirtualization/GitHub_10858.cs @@ -0,0 +1,46 @@ +// Licensed to the .NET Foundation under one or more agreements. +// The .NET Foundation licenses this file to you under the MIT license. +// See the LICENSE file in the project root for more information. + +using System; + +class B +{ + public virtual string F() { return "B"; } +} + +sealed class D : B +{ + public override string F() { return "D"; } +} + +sealed class E : B +{ + public override string F() { return "E"; } +} + +class X +{ + public static int Main(string[] args) + { + // When optimizing IL, CSC will leave the newobj's on the stack + // across the branches to the common def point. + B b1 = (args.Length > 0) ? (B)new E() : (B)new D(); + B b2 = null; + + // Conditional flow here to forces b1 to a local instead of + // remaining on the stack. So we have a single def point with + // two reaching values. + if (args.Length > 0) + { + b2 = new D(); + } + else + { + b2 = new E(); + } + + // We should not be able to devirtualize either call. + return b2.F()[0] + b1.F()[0] - 37; + } +} diff --git a/tests/src/JIT/opt/Devirtualization/GitHub_10858.csproj b/tests/src/JIT/opt/Devirtualization/GitHub_10858.csproj new file mode 100644 index 0000000000..fdf04a29e0 --- /dev/null +++ b/tests/src/JIT/opt/Devirtualization/GitHub_10858.csproj @@ -0,0 +1,37 @@ +<?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>$(MSBuildProjectName)</AssemblyName> + <SchemaVersion>2.0</SchemaVersion> + <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid> + <OutputType>Exe</OutputType> + <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids> + <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir> + </PropertyGroup> + <!-- Default configurations to help VS understand the configurations --> + <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' "> + </PropertyGroup> + <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> + </PropertyGroup> + <ItemGroup> + <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies"> + <Visible>False</Visible> + </CodeAnalysisDependentAssemblyPaths> + </ItemGroup> + <PropertyGroup> + <DebugType>None</DebugType> + <Optimize>True</Optimize> + </PropertyGroup> + <ItemGroup> + <Compile Include="GitHub_10858.cs" /> + </ItemGroup> + <ItemGroup> + <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" /> + </ItemGroup> + <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" /> + <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' "> + </PropertyGroup> +</Project> |