forked from OSchip/llvm-project
96 lines
3.3 KiB
LLVM
96 lines
3.3 KiB
LLVM
; RUN: opt -objc-arc-contract -S < %s | FileCheck %s
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; rdar://9511608
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%0 = type opaque
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%1 = type opaque
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%2 = type { i64, i64 }
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%4 = type opaque
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declare %0* @"\01-[NSAttributedString(Terminal) pathAtIndex:effectiveRange:]"(%1*, i8* nocapture, i64, %2*) optsize
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declare i8* @objc_retainAutoreleasedReturnValue(i8*)
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declare i8* @objc_msgSend_fixup(i8*, i8*, ...)
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declare i8* @objc_msgSend(i8*, i8*, ...)
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declare void @objc_release(i8*)
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declare %2 @NSUnionRange(i64, i64, i64, i64) optsize
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declare i8* @objc_autoreleaseReturnValue(i8*)
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declare i8* @objc_autorelease(i8*)
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declare i32 @__gxx_personality_sj0(...)
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; Don't get in trouble on bugpointed code.
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; CHECK-LABEL: define void @test0(
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define void @test0() {
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bb:
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%tmp = bitcast %4* undef to i8*
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%tmp1 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %tmp) nounwind
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br label %bb3
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bb3: ; preds = %bb2
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br i1 undef, label %bb6, label %bb4
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bb4: ; preds = %bb3
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switch i64 undef, label %bb5 [
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i64 9223372036854775807, label %bb6
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i64 0, label %bb6
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]
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bb5: ; preds = %bb4
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br label %bb6
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bb6: ; preds = %bb5, %bb4, %bb4, %bb3
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%tmp7 = phi %4* [ undef, %bb5 ], [ undef, %bb4 ], [ undef, %bb3 ], [ undef, %bb4 ]
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unreachable
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}
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; When rewriting operands for a phi which has multiple operands
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; for the same block, use the exactly same value in each block.
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; CHECK-LABEL: define void @test1(
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; CHECK: %0 = bitcast i8* %tmp3 to %0*
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; CHECK: br i1 undef, label %bb7, label %bb7
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; CHECK: bb7:
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; CHECK: %tmp8 = phi %0* [ %0, %bb ], [ %0, %bb ]
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; CHECK: }
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define void @test1() {
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bb:
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%tmp = tail call %0* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %0* ()*)()
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%tmp2 = bitcast %0* %tmp to i8*
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%tmp3 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %tmp2) nounwind
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br i1 undef, label %bb7, label %bb7
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bb7: ; preds = %bb6, %bb6, %bb5
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%tmp8 = phi %0* [ %tmp, %bb ], [ %tmp, %bb ]
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unreachable
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}
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; When looking for the defining instruction for an objc_retainAutoreleasedReturnValue
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; call, handle the case where it's an invoke in a different basic block.
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; rdar://11714057
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; CHECK: define void @_Z6doTestP8NSString() {
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; CHECK: invoke.cont: ; preds = %entry
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; CHECK-NEXT: call void asm sideeffect "mov\09r7, r7\09\09@ marker for objc_retainAutoreleaseReturnValue", ""()
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; CHECK-NEXT: %tmp = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %call) [[NUW:#[0-9]+]]
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; CHECK: }
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define void @_Z6doTestP8NSString() {
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entry:
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%call = invoke i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* ()*)()
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to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %entry
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%tmp = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %call) nounwind
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unreachable
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lpad: ; preds = %entry
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%tmp1 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*)
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cleanup
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resume { i8*, i32 } undef
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}
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!clang.arc.retainAutoreleasedReturnValueMarker = !{!0}
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!0 = metadata !{metadata !"mov\09r7, r7\09\09@ marker for objc_retainAutoreleaseReturnValue"}
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; CHECK: attributes #0 = { optsize }
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; CHECK: attributes [[NUW]] = { nounwind }
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