1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-runtime-has-weak -fblocks -fobjc-arc -O2 -disable-llvm-optzns -o - %s | FileCheck %s
9 // Lifetime extension for binding a reference to an rvalue
10 // CHECK: define void @_Z5test0v()
12 // CHECK: call i8* @_Z9getObjectv
13 // CHECK-NEXT:: call i8* @objc_retainAutoreleasedReturnValue
14 const __strong id &ref1 = getObject();
15 // CHECK: call void @_Z6calleev
17 // CHECK: call i8* @_Z9getObjectv
18 // CHECK-NEXT: call i8* @objc_retainAutoreleasedReturnValue
19 // CHECK-NEXT: call i8* @objc_autorelease
20 const __autoreleasing id &ref2 = getObject();
21 // CHECK: call void @_Z6calleev
23 // CHECK: call void @objc_release
27 // No lifetime extension when we're binding a reference to an lvalue.
28 // CHECK: define void @_Z5test1RU8__strongP11objc_objectRU6__weakS0_
29 void test1(__strong id &x, __weak id &y) {
31 const __strong id &ref1 = x;
32 const __autoreleasing id &ref2 = x;
33 const __weak id &ref3 = y;
37 typedef __strong id strong_id;
39 //CHECK: define void @_Z5test3v
41 // CHECK: call i8* @objc_initWeak
42 // CHECK-NEXT: store i8**
43 const __weak id &ref = strong_id();
44 // CHECK-NEXT: call void @_Z6calleev()
46 // CHECK-NEXT: call void @objc_destroyWeak
47 // CHECK-NEXT: ret void
50 // CHECK: define void @_Z5test4RU8__strongP11objc_object
51 void test4(__strong id &x) {
52 // CHECK: call i8* @objc_retain
53 __strong A* const &ar = x;
54 // CHECK: store i32 17, i32*
56 // CHECK: call void @objc_release(
60 void sink(__strong A* &&);
62 // CHECK: define void @_Z5test5RU8__strongP11objc_object
63 void test5(__strong id &x) {
64 // CHECK: [[REFTMP:%.*]] = alloca {{%.*}}*, align 8
65 // CHECK: [[OBJ_ID:%.*]] = call i8* @objc_retain(
66 // CHECK-NEXT: [[OBJ_A:%.*]] = bitcast i8* [[OBJ_ID]] to [[A:%[a-zA-Z0-9]+]]*
67 // CHECK-NEXT: store [[A]]* [[OBJ_A]], [[A]]** [[REFTMP:%[a-zA-Z0-9]+]]
68 // CHECK-NEXT: call void @_Z4sinkOU8__strongP1A
70 // CHECK-NEXT: [[OBJ_A:%[a-zA-Z0-9]+]] = load [[A]]** [[REFTMP]]
71 // CHECK-NEXT: [[OBJ_ID:%[a-zA-Z0-9]+]] = bitcast [[A]]* [[OBJ_A]] to i8*
72 // CHECK-NEXT: call void @objc_release
73 // CHECK-NEXT: store i32 17, i32
75 // CHECK-NEXT: ret void
78 // CHECK: define internal void @__cxx_global_var_init(
79 // CHECK: call i8* @_Z9getObjectv
80 // CHECK-NEXT: call i8* @objc_retainAutoreleasedReturnValue
81 const __strong id &global_ref = getObject();
83 // Note: we intentionally don't release the object.