Add a test

src/tests/JIT/Regression/JitBlue/Runtime_75312/Runtime_75312.il

@@ -0,0 +1,48 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+.assembly extern System.Runtime {}
+.assembly extern System.Runtime.Extensions {}
+.assembly extern System.Console {}
+.assembly Runtime_75312 {}
+
+.class public abstract auto ansi sealed beforefieldinit Runtime_75312
+       extends [System.Runtime]System.Object
+{
+    .method private hidebysig static 
+        int32 Main () cil managed 
+    {
+        .entrypoint
+        .maxstack 2
+        .locals init (
+            [0] int64 a
+        )
+        ldc.i8 1234605616436508552
+        stloc.0
+        ldc.i4 1146447579
+        ldloca.s 0
+        conv.u
+        newobj instance void [System.Runtime]System.IntPtr::.ctor(void*)
+        call int32 [System.Runtime]System.IntPtr::op_Explicit(native int)
+        call int32 Runtime_75312::Test(int32)
+        sub
+        ret
+    }
+
+    .method private hidebysig static int32 Test (int32 lcl) cil managed noinlining nooptimization
+    {
+        .maxstack 8
+        ldarg.0
+        ldc.i4.3
+        ldc.i4.0
+        mul
+        ldc.i4.2
+        shl
+        add
+        ldc.i4.1
+        add
+        conv.i
+        ldind.i4
+        ret
+    }
+}

src/tests/JIT/Regression/JitBlue/Runtime_75312/Runtime_75312.ilproj

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+<Project Sdk="Microsoft.NET.Sdk.IL">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="$(MSBuildProjectName).il" />
+  </ItemGroup>
+</Project>