Fix spill check for struct lclVars (#23570)

* Fix spill check for struct lclVars

With the 1st class struct changes, the `SPILL_APPEND` check for the case of an assignment to a lclVar needs to handle block ops as well as lclVar lhs.

Fix #23545

2 files changed, 67 insertions, 0 deletions

diff --git a/tests/src/JIT/Regression/JitBlue/GitHub_23545/GitHub_23545.cs b/tests/src/JIT/Regression/JitBlue/GitHub_23545/GitHub_23545.cs
new file mode 100644
index 0000000000..3ea3d97fa7
--- /dev/null
+++ b/tests/src/JIT/Regression/JitBlue/GitHub_23545/GitHub_23545.cs
@@ -0,0 +1,50 @@
+// 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.Collections.Generic;
+
+namespace GitHub_23545
+{
+    public struct TestStruct
+    {
+        public int value1;
+
+        public override string ToString()
+        {
+            return this.value1.ToString();
+        }
+    }
+
+    class Test
+    {
+        public static Dictionary<TestStruct, TestStruct> StructKeyValue
+        {
+            get
+            {
+                return new Dictionary<TestStruct, TestStruct>()
+                {
+                    {
+                        new TestStruct(){value1 = 12}, new TestStruct(){value1 = 15}
+                    }
+                };
+            }
+        }
+
+        static int Main()
+        {
+            int value = 0;
+            foreach (var e in StructKeyValue)
+            {
+                value += e.Key.value1 + e.Value.value1;
+                Console.WriteLine(e.Key.ToString() + " " + e.Value.ToString());
+            }
+            if (value != 27)
+            {
+                return -1;
+            }
+            return 100;
+        }
+    }
+}
diff --git a/tests/src/JIT/Regression/JitBlue/GitHub_23545/GitHub_23545.csproj b/tests/src/JIT/Regression/JitBlue/GitHub_23545/GitHub_23545.csproj
new file mode 100644
index 0000000000..c24f74b865
--- /dev/null
+++ b/tests/src/JIT/Regression/JitBlue/GitHub_23545/GitHub_23545.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>