From dc74cd6302ca26964290f8045947ca21fdf3a2b0 Mon Sep 17 00:00:00 2001
From: Koundinya Veluri <kouvel@microsoft.com>
Date: Mon, 10 Sep 2018 14:26:30 -0700
Subject: [PATCH] Expose MethodImplOptions.AggressiveOptimization

Part of fix for https://github.com/dotnet/corefx/issues/32235
---
 src/System.Runtime/ref/System.Runtime.cs      |  1 +
 .../MethodImplAttributeTests.cs               | 21 +++++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 src/System.Runtime/tests/System/Runtime/CompilerServices/MethodImplAttributeTests.cs

diff --git a/src/System.Runtime/ref/System.Runtime.cs b/src/System.Runtime/ref/System.Runtime.cs
index 747cce29089d..734a09673bbe 100644
--- a/src/System.Runtime/ref/System.Runtime.cs
+++ b/src/System.Runtime/ref/System.Runtime.cs
@@ -6660,6 +6660,7 @@ public MethodImplAttribute(System.Runtime.CompilerServices.MethodImplOptions met
     public enum MethodImplOptions
     {
         AggressiveInlining = 256,
+        AggressiveOptimization = 512,
         ForwardRef = 16,
         InternalCall = 4096,
         NoInlining = 8,
diff --git a/src/System.Runtime/tests/System/Runtime/CompilerServices/MethodImplAttributeTests.cs b/src/System.Runtime/tests/System/Runtime/CompilerServices/MethodImplAttributeTests.cs
new file mode 100644
index 000000000000..1cca47ec35b4
--- /dev/null
+++ b/src/System.Runtime/tests/System/Runtime/CompilerServices/MethodImplAttributeTests.cs
@@ -0,0 +1,21 @@
+// 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.Reflection;
+using Xunit;
+
+namespace System.Runtime.CompilerServices.Tests
+{
+    public static class MethodImplAttributeTests
+    {
+        [Fact]
+        [MethodImpl(MethodImplOptions.AggressiveOptimization)]
+        public static void AggressiveOptimizationTest()
+        {
+            Assert.Equal(
+                MethodImplOptions.AggressiveOptimization,
+                MethodBase.GetCurrentMethod().GetCustomAttribute<MethodImplAttribute>().Value);
+        }
+    }
+}