test/Transforms/ObjCARC/contract-marker.ll


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; RUN: opt -S -objc-arc-contract < %s | FileCheck %s

; CHECK:      %call = tail call i32* @qux()
; CHECK-NEXT: %tcall = bitcast i32* %call to i8*
; CHECK-NEXT: call void asm sideeffect "mov\09r7, r7\09\09@ marker for objc_retainAutoreleaseReturnValue", ""()
; CHECK-NEXT: %0 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %tcall) [[NUW:#[0-9]+]]

define void @foo() {
entry:
  %call = tail call i32* @qux()
  %tcall = bitcast i32* %call to i8*
  %0 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %tcall) nounwind
  tail call void @bar(i8* %0)
  ret void
}

declare i32* @qux()
declare i8* @objc_retainAutoreleasedReturnValue(i8*)
declare void @bar(i8*)

!clang.arc.retainAutoreleasedReturnValueMarker = !{!0}

!0 = metadata !{metadata !"mov\09r7, r7\09\09@ marker for objc_retainAutoreleaseReturnValue"}

; CHECK: attributes [[NUW]] = { nounwind }