From f4a6aab7c3db813a6ce279f438bd5b04e6f7f5cc Mon Sep 17 00:00:00 2001
From: Carol Eidt <carol.eidt@microsoft.com>
Date: Mon, 17 Dec 2018 10:28:54 -0800
Subject: [PATCH] Test for dotnet/coreclr#20657 SIMD byref bug

Commit migrated from https://github.com/dotnet/coreclr/commit/4c428afcde2b9b16f202e864d3ac863ede3dff8f
---
 .../JitBlue/GitHub_20657/GitHub_20657.cs           | 34 ++++++++++++++++++++++
 .../JitBlue/GitHub_20657/GitHub_20657.csproj       | 34 ++++++++++++++++++++++
 2 files changed, 68 insertions(+)
 create mode 100644 src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_20657/GitHub_20657.cs
 create mode 100644 src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_20657/GitHub_20657.csproj

diff --git a/src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_20657/GitHub_20657.cs b/src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_20657/GitHub_20657.cs
new file mode 100644
index 0000000..b301cfd
--- /dev/null
+++ b/src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_20657/GitHub_20657.cs
@@ -0,0 +1,34 @@
+// 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;
+using System.Numerics;
+
+// GitHub 20657: 
+
+namespace GitHub_20657
+{
+    class Program
+    {
+        static int Main(string[] args)
+        {
+            var v1 = new Vector4();
+            var v2 = Oops(v1);
+            if ((v2.X != 0.0) || (v2.Y != 0.0) || (v2.Z != 0.0) || (v2.W != 1.0))
+            {
+                return -1;
+            }
+            return 100;
+        }
+
+        private static readonly Vector4 Noo = new Vector4();
+
+        public static Vector4 Oops(Vector4 v)
+        {
+            v.W = 1f;
+
+            return v + Noo;
+        }
+    }
+}
diff --git a/src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_20657/GitHub_20657.csproj b/src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_20657/GitHub_20657.csproj
new file mode 100644
index 0000000..e191e012
--- /dev/null
+++ b/src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_20657/GitHub_20657.csproj
@@ -0,0 +1,34 @@
+<?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="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType>None</DebugType>
+    <Optimize>True</Optimize>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="$(MSBuildProjectName).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>
-- 
2.7.4