Avoid boxing allocations for async in Tier0 (dotnet/coreclr#22984)

Commit migrated from dotnet/coreclr@dc0d072
picenka21 · Mar 29, 2019 · 260e3ca · 260e3ca
1 parent 80d6d4d
commit 260e3ca
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/...ibraries/System.Private.CoreLib/src/System/Runtime/CompilerServices/AsyncMethodBuilder.cs b/...ibraries/System.Private.CoreLib/src/System/Runtime/CompilerServices/AsyncMethodBuilder.cs
@@ -399,6 +399,8 @@ public void AwaitOnCompleted<TAwaiter, TStateMachine>(
         /// <typeparam name="TStateMachine">Specifies the type of the state machine.</typeparam>
         /// <param name="awaiter">The awaiter.</param>
         /// <param name="stateMachine">The state machine.</param>
+        // AggressiveOptimization to workaround boxing allocations in Tier0 until: https://github.com/dotnet/coreclr/issues/14474
+        [MethodImpl(MethodImplOptions.AggressiveOptimization)]
         public void AwaitUnsafeOnCompleted<TAwaiter, TStateMachine>(
             ref TAwaiter awaiter, ref TStateMachine stateMachine)
             where TAwaiter : ICriticalNotifyCompletion