1// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-runtime-has-weak -fblocks -fobjc-arc -O2 -disable-llvm-optzns -o - %s | FileCheck %s
2
3@interface A
4@end
5
6id getObject();
7void callee();
8
9// Lifetime extension for binding a reference to an rvalue
10// CHECK-LABEL: define void @_Z5test0v()
11void test0() {
12  // CHECK: call i8* @_Z9getObjectv
13  // CHECK-NEXT: call i8* @objc_retainAutoreleasedReturnValue
14  const __strong id &ref1 = getObject();
15  // CHECK: call void @_Z6calleev
16  callee();
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
22  callee();
23  // CHECK: call void @objc_release
24  // CHECK-NEXT: ret
25}
26
27// No lifetime extension when we're binding a reference to an lvalue.
28// CHECK-LABEL: define void @_Z5test1RU8__strongP11objc_objectRU6__weakS0_
29void test1(__strong id &x, __weak id &y) {
30  // CHECK-NOT: release
31  const __strong id &ref1 = x;
32  const __autoreleasing id &ref2 = x;
33  const __weak id &ref3 = y;
34  // CHECK: ret void
35}
36
37typedef __strong id strong_id;
38
39//CHECK: define void @_Z5test3v
40void test3() {
41  // CHECK: call i8* @objc_initWeak
42  // CHECK-NEXT: store i8**
43  const __weak id &ref = strong_id();
44  // CHECK-NEXT: call void @_Z6calleev()
45  callee();
46  // CHECK-NEXT: call void @objc_destroyWeak
47  // CHECK-NEXT: ret void
48}
49
50// CHECK-LABEL: define void @_Z5test4RU8__strongP11objc_object
51void test4(__strong id &x) {
52  // CHECK: call i8* @objc_retain
53  __strong A* const &ar = x;
54  // CHECK: store i32 17, i32*
55  int i = 17;
56  // CHECK: call void @objc_release(
57  // CHECK: ret void
58}
59
60void sink(__strong A* &&);
61
62// CHECK-LABEL: define void @_Z5test5RU8__strongP11objc_object
63void 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
69  sink(x);
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
74  int i = 17;
75  // CHECK-NEXT: ret void
76}
77
78// CHECK-LABEL: define internal void @__cxx_global_var_init(
79// CHECK: call i8* @_Z9getObjectv
80// CHECK-NEXT: call i8* @objc_retainAutoreleasedReturnValue
81const __strong id &global_ref = getObject();
82
83// Note: we intentionally don't release the object.
84
85