1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -O2 -disable-llvm-optzns -o - %s | FileCheck %s 2 3 void test0(_Bool cond) { 4 id test0_helper(void) __attribute__((ns_returns_retained)); 5 6 // CHECK: define void @test0( 7 // CHECK: [[COND:%.*]] = alloca i8, 8 // CHECK-NEXT: [[X:%.*]] = alloca i8*, 9 // CHECK-NEXT: [[RELVAL:%.*]] = alloca i8* 10 // CHECK-NEXT: [[RELCOND:%.*]] = alloca i1 11 // CHECK-NEXT: zext 12 // CHECK-NEXT: store 13 // CHECK-NEXT: [[T0:%.*]] = load i8* [[COND]] 14 // CHECK-NEXT: [[T1:%.*]] = trunc i8 [[T0]] to i1 15 // CHECK-NEXT: store i1 false, i1* [[RELCOND]] 16 // CHECK-NEXT: br i1 [[T1]], 17 // CHECK: br label 18 // CHECK: [[CALL:%.*]] = call i8* @test0_helper() 19 // CHECK-NEXT: store i8* [[CALL]], i8** [[RELVAL]] 20 // CHECK-NEXT: store i1 true, i1* [[RELCOND]] 21 // CHECK-NEXT: br label 22 // CHECK: [[T0:%.*]] = phi i8* [ null, {{%.*}} ], [ [[CALL]], {{%.*}} ] 23 // CHECK-NEXT: [[T1:%.*]] = call i8* @objc_retain(i8* [[T0]]) [[NUW:#[0-9]+]] 24 // CHECK-NEXT: store i8* [[T1]], i8** [[X]], 25 // CHECK-NEXT: [[REL:%.*]] = load i1* [[RELCOND]] 26 // CHECK-NEXT: br i1 [[REL]], 27 // CHECK: [[T0:%.*]] = load i8** [[RELVAL]] 28 // CHECK-NEXT: call void @objc_release(i8* [[T0]]) [[NUW]] 29 // CHECK-NEXT: br label 30 // CHECK: [[T0:%.*]] = load i8** [[X]] 31 // CHECK-NEXT: call void @objc_release(i8* [[T0]]) [[NUW]] 32 // CHECK-NEXT: ret void 33 id x = (cond ? 0 : test0_helper()); 34 } 35 36 void test1(int cond) { 37 __strong id strong; 38 __weak id weak; 39 extern void test1_sink(id *); 40 test1_sink(cond ? &strong : 0); 41 test1_sink(cond ? &weak : 0); 42 43 // CHECK: define void @test1( 44 // CHECK: [[COND:%.*]] = alloca i32 45 // CHECK-NEXT: [[STRONG:%.*]] = alloca i8* 46 // CHECK-NEXT: [[WEAK:%.*]] = alloca i8* 47 // CHECK-NEXT: [[TEMP1:%.*]] = alloca i8* 48 // CHECK-NEXT: [[TEMP2:%.*]] = alloca i8* 49 // CHECK-NEXT: [[CONDCLEANUPSAVE:%.*]] = alloca i8* 50 // CHECK-NEXT: [[CONDCLEANUP:%.*]] = alloca i1 51 // CHECK-NEXT: store i32 52 // CHECK-NEXT: store i8* null, i8** [[STRONG]] 53 // CHECK-NEXT: call i8* @objc_initWeak(i8** [[WEAK]], i8* null) 54 55 // CHECK-NEXT: [[T0:%.*]] = load i32* [[COND]] 56 // CHECK-NEXT: [[T1:%.*]] = icmp ne i32 [[T0]], 0 57 // CHECK: [[ARG:%.*]] = phi i8** 58 // CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null 59 // CHECK-NEXT: [[T1:%.*]] = select i1 [[T0]], i8** null, i8** [[TEMP1]] 60 // CHECK-NEXT: br i1 [[T0]], 61 // CHECK: [[T0:%.*]] = load i8** [[ARG]] 62 // CHECK-NEXT: store i8* [[T0]], i8** [[TEMP1]] 63 // CHECK-NEXT: br label 64 // CHECK: call void @test1_sink(i8** [[T1]]) 65 // CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null 66 // CHECK-NEXT: br i1 [[T0]], 67 // CHECK: [[T0:%.*]] = load i8** [[TEMP1]] 68 // CHECK-NEXT: [[T1:%.*]] = call i8* @objc_retain(i8* [[T0]]) 69 // CHECK-NEXT: [[T2:%.*]] = load i8** [[ARG]] 70 // CHECK-NEXT: store i8* [[T1]], i8** [[ARG]] 71 // CHECK-NEXT: call void @objc_release(i8* [[T2]]) 72 // CHECK-NEXT: br label 73 74 // CHECK: [[T0:%.*]] = load i32* [[COND]] 75 // CHECK-NEXT: [[T1:%.*]] = icmp ne i32 [[T0]], 0 76 // CHECK: [[ARG:%.*]] = phi i8** 77 // CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null 78 // CHECK-NEXT: [[T1:%.*]] = select i1 [[T0]], i8** null, i8** [[TEMP2]] 79 // CHECK-NEXT: store i1 false, i1* [[CONDCLEANUP]] 80 // CHECK-NEXT: br i1 [[T0]], 81 // CHECK: [[T0:%.*]] = call i8* @objc_loadWeakRetained(i8** [[ARG]]) 82 // CHECK-NEXT: store i8* [[T0]], i8** [[CONDCLEANUPSAVE]] 83 // CHECK-NEXT: store i1 true, i1* [[CONDCLEANUP]] 84 // CHECK-NEXT: store i8* [[T0]], i8** [[TEMP2]] 85 // CHECK-NEXT: br label 86 // CHECK: call void @test1_sink(i8** [[T1]]) 87 // CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null 88 // CHECK-NEXT: br i1 [[T0]], 89 // CHECK: [[T0:%.*]] = load i8** [[TEMP2]] 90 // CHECK-NEXT: call i8* @objc_storeWeak(i8** [[ARG]], i8* [[T0]]) 91 // CHECK-NEXT: br label 92 93 // CHECK: call void @objc_destroyWeak(i8** [[WEAK]]) 94 // CHECK: ret void 95 } 96 97 // rdar://13113981 98 // Test that, when emitting an expression at +1 that we can't peephole, 99 // we emit the retain inside the full-expression. If we ever peephole 100 // +1s of conditional expressions (which we probably ought to), we'll 101 // need to find another example of something we need to do this for. 102 void test2(int cond) { 103 extern id test2_producer(void); 104 for (id obj in cond ? test2_producer() : (void*) 0) { 105 } 106 107 // CHECK: define void @test2( 108 // CHECK: [[COND:%.*]] = alloca i32, 109 // CHECK: alloca i8* 110 // CHECK: [[CLEANUP_SAVE:%.*]] = alloca i8* 111 // CHECK: [[RUN_CLEANUP:%.*]] = alloca i1 112 // Evaluate condition; cleanup disabled by default. 113 // CHECK: [[T0:%.*]] = load i32* [[COND]], 114 // CHECK-NEXT: icmp ne i32 [[T0]], 0 115 // CHECK-NEXT: store i1 false, i1* [[RUN_CLEANUP]] 116 // CHECK-NEXT: br i1 117 // Within true branch, cleanup enabled. 118 // CHECK: [[T0:%.*]] = call i8* @test2_producer() 119 // CHECK-NEXT: [[T1:%.*]] = call i8* @objc_retainAutoreleasedReturnValue(i8* [[T0]]) 120 // CHECK-NEXT: store i8* [[T1]], i8** [[CLEANUP_SAVE]] 121 // CHECK-NEXT: store i1 true, i1* [[RUN_CLEANUP]] 122 // CHECK-NEXT: br label 123 // Join point for conditional operator; retain immediately. 124 // CHECK: [[T0:%.*]] = phi i8* [ [[T1]], {{%.*}} ], [ null, {{%.*}} ] 125 // CHECK-NEXT: [[RESULT:%.*]] = call i8* @objc_retain(i8* [[T0]]) 126 // Leaving full-expression; run conditional cleanup. 127 // CHECK-NEXT: [[T0:%.*]] = load i1* [[RUN_CLEANUP]] 128 // CHECK-NEXT: br i1 [[T0]] 129 // CHECK: [[T0:%.*]] = load i8** [[CLEANUP_SAVE]] 130 // CHECK-NEXT: call void @objc_release(i8* [[T0]]) 131 // CHECK-NEXT: br label 132 // And way down at the end of the loop: 133 // CHECK: call void @objc_release(i8* [[RESULT]]) 134 } 135 136 // CHECK: attributes [[NUW]] = { nounwind } 137
