66 lines
2.1 KiB
LLVM
66 lines
2.1 KiB
LLVM
; RUN: opt -S -objc-arc-contract < %s | FileCheck %s
|
|
|
|
; CHECK-LABEL: define void @foo() {
|
|
; 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 return value optimization", ""()
|
|
; CHECK-NEXT: %0 = tail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %tcall) [[NUW:#[0-9]+]]
|
|
; CHECK: }
|
|
|
|
define void @foo() {
|
|
entry:
|
|
%call = tail call i32* @qux()
|
|
%tcall = bitcast i32* %call to i8*
|
|
%0 = tail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %tcall) nounwind
|
|
tail call void @bar(i8* %0)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: define void @foo2() {
|
|
; 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 return value optimization", ""()
|
|
; CHECK-NEXT: %0 = tail call i8* @llvm.objc.unsafeClaimAutoreleasedReturnValue(i8* %tcall) [[NUW:#[0-9]+]]
|
|
; CHECK: }
|
|
|
|
define void @foo2() {
|
|
entry:
|
|
%call = tail call i32* @qux()
|
|
%tcall = bitcast i32* %call to i8*
|
|
%0 = tail call i8* @llvm.objc.unsafeClaimAutoreleasedReturnValue(i8* %tcall) nounwind
|
|
tail call void @bar(i8* %0)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: define i8* @foo3(
|
|
; CHECK: call i8* @returnsArg(
|
|
; CHECK-NEXT: call void asm sideeffect
|
|
|
|
define i8* @foo3(i8* %a) {
|
|
%call = call i8* @returnsArg(i8* %a)
|
|
call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %call)
|
|
ret i8* %call
|
|
}
|
|
|
|
; CHECK-LABEL: define i8* @foo4(
|
|
; CHECK: call i8* @returnsArg(
|
|
; CHECK-NEXT: call void asm sideeffect
|
|
|
|
define i8* @foo4(i8* %a) {
|
|
%call = call i8* @returnsArg(i8* %a)
|
|
call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %a)
|
|
ret i8* %call
|
|
}
|
|
|
|
declare i32* @qux()
|
|
declare i8* @llvm.objc.retainAutoreleasedReturnValue(i8*)
|
|
declare i8* @llvm.objc.unsafeClaimAutoreleasedReturnValue(i8*)
|
|
declare void @bar(i8*)
|
|
declare i8* @returnsArg(i8* returned)
|
|
|
|
!llvm.module.flags = !{!0}
|
|
|
|
!0 = !{i32 1, !"clang.arc.retainAutoreleasedReturnValueMarker", !"mov\09r7, r7\09\09@ marker for return value optimization"}
|
|
|
|
; CHECK: attributes [[NUW]] = { nounwind }
|