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; RUN: opt -S -objc-arc < %s | FileCheck %s
; rdar://10210274
%0 = type opaque
declare i8* @llvm.objc.retain(i8*)
declare void @llvm.objc.release(i8*)
declare i8* @llvm.objc.autoreleaseReturnValue(i8*)
; Don't delete the autorelease.
; CHECK-LABEL: define %0* @test0(
; CHECK: @llvm.objc.retain
; CHECK: .lr.ph:
; CHECK-NOT: @llvm.objc.r
; CHECK: @llvm.objc.autoreleaseReturnValue
; CHECK-NOT: @llvm.objc.
; CHECK: }
define %0* @test0(%0* %buffer) nounwind {
%1 = bitcast %0* %buffer to i8*
%2 = tail call i8* @llvm.objc.retain(i8* %1) nounwind
br i1 undef, label %.lr.ph, label %._crit_edge
.lr.ph: ; preds = %.lr.ph, %0
br i1 false, label %.lr.ph, label %._crit_edge
._crit_edge: ; preds = %.lr.ph, %0
%3 = tail call i8* @llvm.objc.retain(i8* %1) nounwind
tail call void @llvm.objc.release(i8* %1) nounwind, !clang.imprecise_release !0
%4 = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %1) nounwind
ret %0* %buffer
}
; Do delete the autorelease, even with the retain in a different block.
; CHECK-LABEL: define %0* @test1(
; CHECK-NOT: @objc
; CHECK: }
define %0* @test1() nounwind {
%buffer = call %0* @foo()
%1 = bitcast %0* %buffer to i8*
%2 = tail call i8* @llvm.objc.retain(i8* %1) nounwind
br i1 undef, label %.lr.ph, label %._crit_edge
.lr.ph: ; preds = %.lr.ph, %0
br i1 false, label %.lr.ph, label %._crit_edge
._crit_edge: ; preds = %.lr.ph, %0
%3 = tail call i8* @llvm.objc.retain(i8* %1) nounwind
tail call void @llvm.objc.release(i8* %1) nounwind, !clang.imprecise_release !0
%4 = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %1) nounwind
ret %0* %buffer
}
declare %0* @foo()
!0 = !{}
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