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1; RUN: opt -passes=objc-arc-contract -S < %s | FileCheck %s2; rdar://95116083 4%0 = type opaque5%1 = type opaque6%2 = type { i64, i64 }7%4 = type opaque8 9declare ptr @"\01-[NSAttributedString(Terminal) pathAtIndex:effectiveRange:]"(ptr, ptr nocapture, i64, ptr) optsize10declare ptr @llvm.objc.retainAutoreleasedReturnValue(ptr)11declare ptr @objc_msgSend_fixup(ptr, ptr, ...)12declare ptr @objc_msgSend(ptr, ptr, ...)13declare void @llvm.objc.release(ptr)14declare %2 @NSUnionRange(i64, i64, i64, i64) optsize15declare ptr @llvm.objc.autoreleaseReturnValue(ptr)16declare ptr @llvm.objc.autorelease(ptr)17declare i32 @__gxx_personality_sj0(...)18 19; Don't get in trouble on bugpointed code.20 21; CHECK-LABEL: define void @test0(22define void @test0(i1 %arg) {23bb:24 %tmp1 = tail call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr undef) nounwind25 br label %bb326 27bb3: ; preds = %bb228 br i1 %arg, label %bb6, label %bb429 30bb4: ; preds = %bb331 switch i64 undef, label %bb5 [32 i64 9223372036854775807, label %bb633 i64 0, label %bb634 ]35 36bb5: ; preds = %bb437 br label %bb638 39bb6: ; preds = %bb5, %bb4, %bb4, %bb340 %tmp7 = phi ptr [ undef, %bb5 ], [ undef, %bb4 ], [ undef, %bb3 ], [ undef, %bb4 ]41 unreachable42}43 44; When rewriting operands for a phi which has multiple operands45; for the same block, use the exactly same value in each block.46 47; CHECK-LABEL: define void @test1(48; CHECK: br i1 %arg, label %bb7, label %bb749; CHECK: bb7:50; CHECK: %tmp8 = phi ptr [ %tmp3, %bb ], [ %tmp3, %bb ]51; CHECK: }52define void @test1(i1 %arg) {53bb:54 %tmp = tail call ptr @objc_msgSend()55 %tmp3 = tail call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %tmp) nounwind56 br i1 %arg, label %bb7, label %bb757 58bb7: ; preds = %bb6, %bb6, %bb559 %tmp8 = phi ptr [ %tmp, %bb ], [ %tmp, %bb ]60 unreachable61}62 63; When looking for the defining instruction for an objc_retainAutoreleasedReturnValue64; call, handle the case where it's an invoke in a different basic block.65; rdar://1171405766 67; CHECK: define void @_Z6doTestP8NSString() personality ptr @__gxx_personality_sj0 {68; CHECK: invoke.cont: ; preds = %entry69; CHECK-NEXT: call void asm sideeffect "mov\09r7, r7\09\09@ marker for objc_retainAutoreleaseReturnValue", ""()70; CHECK-NEXT: %tmp = tail call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %call) [[NUW:#[0-9]+]]71; CHECK: }72define void @_Z6doTestP8NSString() personality ptr @__gxx_personality_sj0 {73entry:74 %call = invoke ptr @objc_msgSend()75 to label %invoke.cont unwind label %lpad76 77invoke.cont: ; preds = %entry78 %tmp = tail call ptr @llvm.objc.retainAutoreleasedReturnValue(ptr %call) nounwind79 unreachable80 81lpad: ; preds = %entry82 %tmp1 = landingpad { ptr, i32 }83 cleanup84 resume { ptr, i32 } undef85}86 87!llvm.module.flags = !{!0}88 89!0 = !{i32 1, !"clang.arc.retainAutoreleasedReturnValueMarker", !"mov\09r7, r7\09\09@ marker for objc_retainAutoreleaseReturnValue"}90 91; CHECK: attributes #0 = { optsize }92; CHECK: attributes [[NUW]] = { nounwind }93