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