1; RUN: opt -passes=objc-arc -S < %s | FileCheck %s 2 3target datalayout = "e-p:64:64:64" 4 5declare ptr @llvm.objc.retain(ptr) 6declare ptr @llvm.objc.retainAutorelease(ptr) 7declare void @llvm.objc.release(ptr) 8declare ptr @llvm.objc.autorelease(ptr) 9 10declare void @llvm.objc.clang.arc.use(...) 11declare void @llvm.objc.clang.arc.noop.use(...) 12 13declare void @test0_helper(ptr, ptr) 14declare void @can_release(ptr) 15 16; Ensure that we honor clang.arc.use as a use and don't miscompile 17; the reduced test case from <rdar://13195034>. 18; 19; CHECK-LABEL: define void @test0( 20; CHECK: @llvm.objc.retain(ptr %x) 21; CHECK-NEXT: store ptr %y, ptr %temp0 22; CHECK-NEXT: @llvm.objc.retain(ptr %y) 23; CHECK-NEXT: call void @test0_helper 24; CHECK-NEXT: [[VAL1:%.*]] = load ptr, ptr %temp0 25; CHECK-NEXT: @llvm.objc.retain(ptr [[VAL1]]) 26; CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(ptr %y) 27; CHECK-NEXT: @llvm.objc.release(ptr %y) 28; CHECK-NEXT: store ptr [[VAL1]], ptr %temp1 29; CHECK-NEXT: call void @test0_helper 30; CHECK-NEXT: [[VAL2:%.*]] = load ptr, ptr %temp1 31; CHECK-NEXT: @llvm.objc.retain(ptr [[VAL2]]) 32; CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(ptr [[VAL1]]) 33; CHECK-NEXT: @llvm.objc.release(ptr [[VAL1]]) 34; CHECK-NEXT: @llvm.objc.autorelease(ptr %x) 35; CHECK-NEXT: store ptr %x, ptr %out 36; CHECK-NEXT: @llvm.objc.retain(ptr %x) 37; CHECK-NEXT: @llvm.objc.release(ptr [[VAL2]]) 38; CHECK-NEXT: @llvm.objc.release(ptr %x) 39; CHECK-NEXT: ret void 40; CHECK-NEXT: } 41define void @test0(ptr %out, ptr %x, ptr %y) { 42entry: 43 %temp0 = alloca ptr, align 8 44 %temp1 = alloca ptr, align 8 45 %0 = call ptr @llvm.objc.retain(ptr %x) nounwind 46 %1 = call ptr @llvm.objc.retain(ptr %y) nounwind 47 store ptr %y, ptr %temp0 48 call void @test0_helper(ptr %x, ptr %temp0) 49 %val1 = load ptr, ptr %temp0 50 %2 = call ptr @llvm.objc.retain(ptr %val1) nounwind 51 call void (...) @llvm.objc.clang.arc.use(ptr %y) nounwind 52 call void @llvm.objc.release(ptr %y) nounwind 53 store ptr %val1, ptr %temp1 54 call void @test0_helper(ptr %x, ptr %temp1) 55 %val2 = load ptr, ptr %temp1 56 %3 = call ptr @llvm.objc.retain(ptr %val2) nounwind 57 call void (...) @llvm.objc.clang.arc.use(ptr %val1) nounwind 58 call void @llvm.objc.release(ptr %val1) nounwind 59 %4 = call ptr @llvm.objc.retain(ptr %x) nounwind 60 %5 = call ptr @llvm.objc.autorelease(ptr %x) nounwind 61 store ptr %x, ptr %out 62 call void @llvm.objc.release(ptr %val2) nounwind 63 call void @llvm.objc.release(ptr %x) nounwind 64 ret void 65} 66 67; CHECK-LABEL: define void @test0a( 68; CHECK: @llvm.objc.retain(ptr %x) 69; CHECK-NEXT: store ptr %y, ptr %temp0 70; CHECK-NEXT: @llvm.objc.retain(ptr %y) 71; CHECK-NEXT: call void @test0_helper 72; CHECK-NEXT: [[VAL1:%.*]] = load ptr, ptr %temp0 73; CHECK-NEXT: @llvm.objc.retain(ptr [[VAL1]]) 74; CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(ptr %y) 75; CHECK-NEXT: @llvm.objc.release(ptr %y) 76; CHECK-NEXT: store ptr [[VAL1]], ptr %temp1 77; CHECK-NEXT: call void @test0_helper 78; CHECK-NEXT: [[VAL2:%.*]] = load ptr, ptr %temp1 79; CHECK-NEXT: @llvm.objc.retain(ptr [[VAL2]]) 80; CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(ptr [[VAL1]]) 81; CHECK-NEXT: @llvm.objc.release(ptr [[VAL1]]) 82; CHECK-NEXT: @llvm.objc.autorelease(ptr %x) 83; CHECK-NEXT: @llvm.objc.release(ptr [[VAL2]]) 84; CHECK-NEXT: store ptr %x, ptr %out 85; CHECK-NEXT: ret void 86; CHECK-NEXT: } 87define void @test0a(ptr %out, ptr %x, ptr %y) { 88entry: 89 %temp0 = alloca ptr, align 8 90 %temp1 = alloca ptr, align 8 91 %0 = call ptr @llvm.objc.retain(ptr %x) nounwind 92 %1 = call ptr @llvm.objc.retain(ptr %y) nounwind 93 store ptr %y, ptr %temp0 94 call void @test0_helper(ptr %x, ptr %temp0) 95 %val1 = load ptr, ptr %temp0 96 %2 = call ptr @llvm.objc.retain(ptr %val1) nounwind 97 call void (...) @llvm.objc.clang.arc.use(ptr %y) nounwind 98 call void @llvm.objc.release(ptr %y) nounwind, !clang.imprecise_release !0 99 store ptr %val1, ptr %temp1 100 call void @test0_helper(ptr %x, ptr %temp1) 101 %val2 = load ptr, ptr %temp1 102 %3 = call ptr @llvm.objc.retain(ptr %val2) nounwind 103 call void (...) @llvm.objc.clang.arc.use(ptr %val1) nounwind 104 call void @llvm.objc.release(ptr %val1) nounwind, !clang.imprecise_release !0 105 %4 = call ptr @llvm.objc.retain(ptr %x) nounwind 106 %5 = call ptr @llvm.objc.autorelease(ptr %x) nounwind 107 store ptr %x, ptr %out 108 call void @llvm.objc.release(ptr %val2) nounwind, !clang.imprecise_release !0 109 call void @llvm.objc.release(ptr %x) nounwind, !clang.imprecise_release !0 110 ret void 111} 112 113; ARC optimizer should be able to safely remove the retain/release pair as the 114; call to @llvm.objc.clang.arc.noop.use is a no-op. 115 116; CHECK-LABEL: define void @test_arc_noop_use( 117; CHECK-NEXT: call void @can_release(ptr %x) 118; CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use( 119; CHECK-NEXT: ret void 120 121define void @test_arc_noop_use(ptr %out, ptr %x) { 122 call ptr @llvm.objc.retain(ptr %x) 123 call void @can_release(ptr %x) 124 call void (...) @llvm.objc.clang.arc.noop.use(ptr %x) 125 call void @llvm.objc.release(ptr %x), !clang.imprecise_release !0 126 ret void 127} 128 129!0 = !{} 130 131