[Arm64] Add Base HW intrinsic tests

2 files changed, 217 insertions, 0 deletions

diff --git a/tests/src/JIT/HardwareIntrinsics/Arm64/Base.cs b/tests/src/JIT/HardwareIntrinsics/Arm64/Base.cs
new file mode 100644
index 0000000000..e6efcd04d0
--- /dev/null
+++ b/tests/src/JIT/HardwareIntrinsics/Arm64/Base.cs
@@ -0,0 +1,181 @@
+using System;
+using System.Diagnostics;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Runtime.Intrinsics;
+using System.Runtime.Intrinsics.Arm.Arm64;
+
+namespace Arm64intrisicsTest
+{
+    class Program
+    {
+        static void testUnaryOp<T>(String testCaseDescription, Func<T, int> binOp, Func<T, int> check, T value)
+        {
+            bool failed = false;
+            try
+            {
+                int expected = check(value);
+                int result = binOp(value);
+
+                if (result != expected)
+                {
+                    Console.WriteLine($"testUnaryOp<{typeof(T).Name}>{testCaseDescription}: Check Failed");
+                    Console.WriteLine($"    result = {result}, expected = {expected}");
+                    throw new Exception($"testUnaryOp<{typeof(T).Name}>{testCaseDescription}: Failed");
+                }
+            }
+            catch
+            {
+                Console.WriteLine($"testUnaryOp<{typeof(T).Name}>{testCaseDescription}: Unexpected exception");
+                throw;
+            }
+        }
+
+        static void testThrowsPlatformNotSupported<T>(String testCaseDescription, Func<T, int> unaryOp, T value)
+        {
+            bool notSupported = false;
+
+            try
+            {
+                unaryOp(value);
+            }
+            catch (PlatformNotSupportedException)
+            {
+                notSupported = true;
+            }
+            catch
+            {
+                Console.WriteLine($"testThrowsPlatformNotSupported: Unexpected exception");
+                throw;
+            }
+
+            if (notSupported == false)
+            {
+                throw new Exception($"testThrowsPlatformNotSupported<{typeof(T).Name} >{testCaseDescription}: Failed");
+            }
+        }
+
+        static ulong bitsToUint64<T>(T x)
+        {
+            return Unsafe.As<T, ulong>(ref x) & ~(~0UL << 8*Unsafe.SizeOf<T>());
+        }
+
+        static int leadingZero<T>(T x)
+            where T : IConvertible
+        {
+            ulong compare = 0x1UL << (8*Unsafe.SizeOf<T>() - 1);
+            int result = 0;
+            ulong value = bitsToUint64(x);
+
+            while(value < compare)
+            {
+                result++;
+                compare >>= 1;
+            }
+
+            return result;
+
+            throw new Exception("Unexpected Type");
+        }
+
+        static int leadingSign<T>(T x)
+            where T : IConvertible
+        {
+            ulong value = bitsToUint64(x);
+            ulong signBit = value & (0x1UL << (8*Unsafe.SizeOf<T>() - 1));
+            int result = 0;
+
+            if (signBit == 0)
+            {
+                result = leadingZero(x);
+            }
+            else
+            {
+                result = leadingZero((T) Convert.ChangeType(value ^ (signBit + (signBit - 1)),  typeof(T)));
+            }
+
+            return result - 1;
+        }
+
+        static void TestLeadingSignCount()
+        {
+#if COREFX_HAS_ARM64_BASE
+            String name = "LeadingSignCount";
+
+            if (Base.IsSupported)
+            {
+                testUnaryOp<int >(name, (x) => Base.LeadingSignCount(x), (x) => leadingSign(x),  0);
+                testUnaryOp<int >(name, (x) => Base.LeadingSignCount(x), (x) => leadingSign(x), -1);
+                testUnaryOp<int >(name, (x) => Base.LeadingSignCount(x), (x) => leadingSign(x),  1 << 30);
+                testUnaryOp<int >(name, (x) => Base.LeadingSignCount(x), (x) => leadingSign(x), -1 << 30);
+                testUnaryOp<long>(name, (x) => Base.LeadingSignCount(x), (x) => leadingSign(x),  0);
+                testUnaryOp<long>(name, (x) => Base.LeadingSignCount(x), (x) => leadingSign(x), -1);
+                testUnaryOp<long>(name, (x) => Base.LeadingSignCount(x), (x) => leadingSign(x),  1L << 60);
+                testUnaryOp<long>(name, (x) => Base.LeadingSignCount(x), (x) => leadingSign(x), -1L << 60);
+            }
+            else
+            {
+                testThrowsPlatformNotSupported<int >(name, (x) => Base.LeadingSignCount(x), 0);
+                testThrowsPlatformNotSupported<long>(name, (x) => Base.LeadingSignCount(x), 0);
+            }
+
+            Console.WriteLine($"Test{name} passed");
+#endif // COREFX_HAS_ARM64_BASE
+        }
+
+        static void TestLeadingZeroCount()
+        {
+#if COREFX_HAS_ARM64_BASE
+            String name = "LeadingZeroCount";
+
+            if (Base.IsSupported)
+            {
+                testUnaryOp<int  >(name, (x) => Base.LeadingZeroCount(x), (x) => leadingZero(x),  0);
+                testUnaryOp<int  >(name, (x) => Base.LeadingZeroCount(x), (x) => leadingZero(x), -1);
+                testUnaryOp<int  >(name, (x) => Base.LeadingZeroCount(x), (x) => leadingZero(x),  1 << 30);
+                testUnaryOp<int  >(name, (x) => Base.LeadingZeroCount(x), (x) => leadingZero(x), -1 << 30);
+                testUnaryOp<uint >(name, (x) => Base.LeadingZeroCount(x), (x) => leadingZero(x),  0);
+                testUnaryOp<uint >(name, (x) => Base.LeadingZeroCount(x), (x) => leadingZero(x),  1 << 30);
+                testUnaryOp<long >(name, (x) => Base.LeadingZeroCount(x), (x) => leadingZero(x),  0);
+                testUnaryOp<long >(name, (x) => Base.LeadingZeroCount(x), (x) => leadingZero(x), -1);
+                testUnaryOp<long >(name, (x) => Base.LeadingZeroCount(x), (x) => leadingZero(x),  1L << 60);
+                testUnaryOp<long >(name, (x) => Base.LeadingZeroCount(x), (x) => leadingZero(x), -1L << 60);
+                testUnaryOp<ulong>(name, (x) => Base.LeadingZeroCount(x), (x) => leadingZero(x),  0);
+                testUnaryOp<ulong>(name, (x) => Base.LeadingZeroCount(x), (x) => leadingZero(x),  1L << 60);
+            }
+            else
+            {
+                testThrowsPlatformNotSupported<int  >(name, (x) => Base.LeadingZeroCount(x), 0);
+                testThrowsPlatformNotSupported<uint >(name, (x) => Base.LeadingZeroCount(x), 0);
+                testThrowsPlatformNotSupported<long >(name, (x) => Base.LeadingZeroCount(x), 0);
+                testThrowsPlatformNotSupported<ulong>(name, (x) => Base.LeadingZeroCount(x), 0);
+            }
+
+            Console.WriteLine($"Test{name} passed");
+#endif // COREFX_HAS_ARM64_BASE
+        }
+
+        static void ExecuteAllTests()
+        {
+            TestLeadingSignCount();
+            TestLeadingZeroCount();
+        }
+
+        static int Main(string[] args)
+        {
+#if COREFX_HAS_ARM64_BASE
+            Console.WriteLine($"System.Runtime.Intrinsics.Arm.Arm64.Base.IsSupported = {Base.IsSupported}");
+
+            // Reflection call
+            var issupported = "get_IsSupported";
+            bool reflectedIsSupported = Convert.ToBoolean(typeof(Base).GetMethod(issupported).Invoke(null, null));
+
+            Debug.Assert(reflectedIsSupported == Base.IsSupported, "Reflection result does not match");
+#endif // COREFX_HAS_ARM64_BASE
+
+            ExecuteAllTests();
+
+            return 100;
+        }
+    }
+}
diff --git a/tests/src/JIT/HardwareIntrinsics/Arm64/Base.csproj b/tests/src/JIT/HardwareIntrinsics/Arm64/Base.csproj
new file mode 100644
index 0000000000..45dd4b6451
--- /dev/null
+++ b/tests/src/JIT/HardwareIntrinsics/Arm64/Base.csproj
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' "></PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' " />
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType>None</DebugType>
+    <Optimize>True</Optimize>
+  </PropertyGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Base.cs" />
+  </ItemGroup>
+  <ItemGroup>
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' "></PropertyGroup>
+</Project>