| // RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-runtime-has-weak -fblocks -fobjc-arc -O2 -disable-llvm-passes -o - %s | FileCheck %s |
| |
| @interface A |
| @end |
| |
| id getObject(); |
| void callee(); |
| |
| // Lifetime extension for binding a reference to an rvalue |
| // CHECK-LABEL: define void @_Z5test0v() |
| void test0() { |
| // CHECK: call i8* @_Z9getObjectv |
| // CHECK-NEXT: call i8* @objc_retainAutoreleasedReturnValue |
| const __strong id &ref1 = getObject(); |
| // CHECK: call void @_Z6calleev |
| callee(); |
| // CHECK: call i8* @_Z9getObjectv |
| // CHECK-NEXT: call i8* @objc_retainAutoreleasedReturnValue |
| // CHECK-NEXT: call i8* @objc_autorelease |
| const __autoreleasing id &ref2 = getObject(); |
| // CHECK: call void @_Z6calleev |
| callee(); |
| // CHECK: call void @objc_release |
| // CHECK: ret |
| } |
| |
| // No lifetime extension when we're binding a reference to an lvalue. |
| // CHECK-LABEL: define void @_Z5test1RU8__strongP11objc_objectRU6__weakS0_ |
| void test1(__strong id &x, __weak id &y) { |
| // CHECK-NOT: release |
| const __strong id &ref1 = x; |
| const __autoreleasing id &ref2 = x; |
| const __weak id &ref3 = y; |
| // CHECK: ret void |
| } |
| |
| typedef __strong id strong_id; |
| |
| //CHECK: define void @_Z5test3v |
| void test3() { |
| // CHECK: [[REF:%.*]] = alloca i8**, align 8 |
| // CHECK: call i8* @objc_initWeak |
| // CHECK-NEXT: store i8** |
| const __weak id &ref = strong_id(); |
| // CHECK-NEXT: call void @_Z6calleev() |
| callee(); |
| // CHECK-NEXT: call void @objc_destroyWeak |
| // CHECK-NEXT: [[PTR:%.*]] = bitcast i8*** [[REF]] to i8* |
| // CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 8, i8* [[PTR]]) |
| // CHECK-NEXT: ret void |
| } |
| |
| // CHECK-LABEL: define void @_Z5test4RU8__strongP11objc_object |
| void test4(__strong id &x) { |
| // CHECK: call i8* @objc_retain |
| __strong A* const &ar = x; |
| // CHECK: store i32 17, i32* |
| int i = 17; |
| // CHECK: call void @objc_release( |
| // CHECK: ret void |
| } |
| |
| void sink(__strong A* &&); |
| |
| // CHECK-LABEL: define void @_Z5test5RU8__strongP11objc_object |
| void test5(__strong id &x) { |
| // CHECK: [[REFTMP:%.*]] = alloca {{%.*}}*, align 8 |
| // CHECK: [[I:%.*]] = alloca i32, align 4 |
| // CHECK: [[OBJ_ID:%.*]] = call i8* @objc_retain( |
| // CHECK-NEXT: [[OBJ_A:%.*]] = bitcast i8* [[OBJ_ID]] to [[A:%[a-zA-Z0-9]+]]* |
| // CHECK-NEXT: store [[A]]* [[OBJ_A]], [[A]]** [[REFTMP:%[a-zA-Z0-9]+]] |
| // CHECK-NEXT: call void @_Z4sinkOU8__strongP1A |
| sink(x); |
| // CHECK-NEXT: [[OBJ_A:%[a-zA-Z0-9]+]] = load [[A]]*, [[A]]** [[REFTMP]] |
| // CHECK-NEXT: [[OBJ_ID:%[a-zA-Z0-9]+]] = bitcast [[A]]* [[OBJ_A]] to i8* |
| // CHECK-NEXT: call void @objc_release |
| // CHECK-NEXT: [[IPTR1:%.*]] = bitcast i32* [[I]] to i8* |
| // CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 4, i8* [[IPTR1]]) |
| // CHECK-NEXT: store i32 17, i32 |
| int i = 17; |
| // CHECK-NEXT: [[IPTR2:%.*]] = bitcast i32* [[I]] to i8* |
| // CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 4, i8* [[IPTR2]]) |
| // CHECK-NEXT: ret void |
| } |
| |
| // CHECK-LABEL: define internal void @__cxx_global_var_init( |
| // CHECK: call i8* @_Z9getObjectv |
| // CHECK-NEXT: call i8* @objc_retainAutoreleasedReturnValue |
| const __strong id &global_ref = getObject(); |
| |
| // Note: we intentionally don't release the object. |
| |
