Add test for 18867

Commit migrated from https://github.com/dotnet/coreclr/commit/8cfbd3381e658485477522ba47d00e19057e0d72

diff --git a/src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_18867/GitHub_18867.cs b/src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_18867/GitHub_18867.cs
new file mode 100644 (file)
index 0000000..ef5fd73
--- /dev/null
+++ b/src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_18867/GitHub_18867.cs
@@ -0,0 +1,69 @@
+// 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.Runtime.CompilerServices;
+
+interface IRT
+{
+    void WriteLine<T>(T val);
+}
+
+class CRT : IRT
+{
+    public static object line;
+    public void WriteLine<T>(T val) => line = val;
+}
+
+public class Program
+{
+    static IRT s_rt;
+    static byte[] s_1 = new byte[] { 0 };
+    static int s_3;
+    static short[] s_8 = new short[] { -1 };
+
+    public static int Main()
+    {
+        s_rt = new CRT();
+        M11(s_8, 0, 0, 0, true, s_1);
+        return ((int)CRT.line == -1) ? 100 : 1;
+    }
+
+    // Test case for a lvNormalizeOnLoad related issue in assertion propagation.
+    // A "normal" lclvar is substituted with a "normalize on load" lclvar (arg3),
+    // that results in load normalization being skipped.
+
+    [MethodImpl(MethodImplOptions.NoInlining)]
+    static ushort M11(short[] arg0, ushort arg1, short arg3, byte arg4, bool arg7, byte[] arg10)
+    {
+        if (arg7)
+        {
+            ulong var4 = (ulong)s_3;
+
+            // mov edi, gword ptr [classVar[0x2c44174]]
+            // cmp dword ptr [edi + 4], 0
+            // jbe SHORT G_M17557_IG06
+            // movsx edi, word ptr [edi + 8]
+            // mov word ptr [ebp + 14H], di ; word only store
+            arg3 = s_8[0];
+
+            short var5 = arg3;
+            s_rt.WriteLine(var4);
+
+            // call CORINFO_HELP_VIRTUAL_FUNC_PTR
+            // mov ecx, edi
+            // mov edx, dword ptr [ebp + 14H] ; dword load, no sign extension
+            // call eax
+            s_rt.WriteLine((int)var5);
+        }
+
+        if (!arg7)
+        {
+            var vr7 = arg0[0];
+        }
+
+        arg10[0] = arg4;
+        return arg1;
+    }
+}

diff --git a/src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_18867/GitHub_18867.csproj b/src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_18867/GitHub_18867.csproj
new file mode 100644 (file)
index 0000000..d86ed9f
--- /dev/null
+++ b/src/coreclr/tests/src/JIT/Regression/JitBlue/GitHub_18867/GitHub_18867.csproj
@@ -0,0 +1,17 @@
+<?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=" '$(Configuration)' == '' ">Release</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <OutputType>Exe</OutputType>
+    <DebugType></DebugType>
+    <Optimize>True</Optimize>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="$(MSBuildProjectName).cs" />
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' "></PropertyGroup>
+</Project>
\ No newline at end of file