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456368709d
inserted when the original call had a 'returned' argument The code is testing whether the instruction BBI points to is the call that is paired up with the retainRV/claimRV call, but it doesn't work when the call has a 'returned' argument since GetArgRCIdentityRoot looks through 'returned' arguments. rdar://72485383
66 lines
2.1 KiB
LLVM
66 lines
2.1 KiB
LLVM
; RUN: opt -S -objc-arc-contract < %s | FileCheck %s
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; CHECK-LABEL: define void @foo() {
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; CHECK: %call = tail call i32* @qux()
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; CHECK-NEXT: %tcall = bitcast i32* %call to i8*
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; CHECK-NEXT: call void asm sideeffect "mov\09r7, r7\09\09@ marker for return value optimization", ""()
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; CHECK-NEXT: %0 = tail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %tcall) [[NUW:#[0-9]+]]
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; CHECK: }
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define void @foo() {
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entry:
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%call = tail call i32* @qux()
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%tcall = bitcast i32* %call to i8*
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%0 = tail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %tcall) nounwind
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tail call void @bar(i8* %0)
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ret void
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}
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; CHECK-LABEL: define void @foo2() {
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; CHECK: %call = tail call i32* @qux()
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; CHECK-NEXT: %tcall = bitcast i32* %call to i8*
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; CHECK-NEXT: call void asm sideeffect "mov\09r7, r7\09\09@ marker for return value optimization", ""()
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; CHECK-NEXT: %0 = tail call i8* @llvm.objc.unsafeClaimAutoreleasedReturnValue(i8* %tcall) [[NUW:#[0-9]+]]
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; CHECK: }
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define void @foo2() {
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entry:
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%call = tail call i32* @qux()
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%tcall = bitcast i32* %call to i8*
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%0 = tail call i8* @llvm.objc.unsafeClaimAutoreleasedReturnValue(i8* %tcall) nounwind
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tail call void @bar(i8* %0)
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ret void
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}
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; CHECK-LABEL: define i8* @foo3(
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; CHECK: call i8* @returnsArg(
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; CHECK-NEXT: call void asm sideeffect
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define i8* @foo3(i8* %a) {
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%call = call i8* @returnsArg(i8* %a)
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call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %call)
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ret i8* %call
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}
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; CHECK-LABEL: define i8* @foo4(
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; CHECK: call i8* @returnsArg(
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; CHECK-NEXT: call void asm sideeffect
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define i8* @foo4(i8* %a) {
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%call = call i8* @returnsArg(i8* %a)
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call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %a)
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ret i8* %call
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}
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declare i32* @qux()
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declare i8* @llvm.objc.retainAutoreleasedReturnValue(i8*)
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declare i8* @llvm.objc.unsafeClaimAutoreleasedReturnValue(i8*)
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declare void @bar(i8*)
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declare i8* @returnsArg(i8* returned)
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!llvm.module.flags = !{!0}
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!0 = !{i32 1, !"clang.arc.retainAutoreleasedReturnValueMarker", !"mov\09r7, r7\09\09@ marker for return value optimization"}
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; CHECK: attributes [[NUW]] = { nounwind }
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