; CHECK: define void @_Z6doTestP8NSString() {
; CHECK: invoke.cont: ; preds = %entry
; CHECK-NEXT: call void asm sideeffect "mov\09r7, r7\09\09@ marker for objc_retainAutoreleaseReturnValue", ""()
-; CHECK-NEXT: %tmp = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind
+; CHECK-NEXT: %tmp = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %call) [[NUW:#[0-9]+]]
define void @_Z6doTestP8NSString() {
entry:
%call = invoke i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* ()*)()
!clang.arc.retainAutoreleasedReturnValueMarker = !{!0}
!0 = metadata !{metadata !"mov\09r7, r7\09\09@ marker for objc_retainAutoreleaseReturnValue"}
+
+; CHECK: attributes #0 = { optsize }
+; CHECK: attributes [[NUW]] = { nounwind }