Add a test

src/tests/JIT/Regression/JitBlue/Runtime_70124/Runtime_70124.cs

@@ -0,0 +1,24 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Numerics;
+using System.Runtime.CompilerServices;
+
+public class Runtime_70124
+{
+    public static int Main()
+    {
+        return Problem(Vector2.One, Vector2.One) != new Vector2(3, 3) ? 101 : 100;
+    }
+
+    [MethodImpl(MethodImplOptions.NoInlining)]
+    private static Vector2 Problem(Vector2 a, Vector2 b)
+    {
+        CallForVtor2(a + b);
+
+        return (a + b) + a;
+    }
+
+    [MethodImpl(MethodImplOptions.NoInlining)]
+    private static void CallForVtor2(Vector2 vtor) { }
+}

src/tests/JIT/Regression/JitBlue/Runtime_70124/Runtime_70124.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <Optimize>True</Optimize>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="$(MSBuildProjectName).cs" />
+  </ItemGroup>
+</Project>