1// RUN: %clang_cc1 -triple=x86_64-apple-darwin10 -emit-llvm -std=c++11 -fblocks -fobjc-arc -o - %s | FileCheck %s
2
3// CHECK: %[[STRUCT_BLOCK_DESCRIPTOR:.*]] = type { i64, i64 }
4
5// CHECK: %[[BLOCK_CAPTURED0:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32*, i32* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32*, i32* }>* %[[BLOCK:.*]], i32 0, i32 5
6// CHECK: %[[V0:.*]] = getelementptr inbounds %[[LAMBDA_CLASS:.*]], %[[LAMBDA_CLASS]]* %[[THIS:.*]], i32 0, i32 0
7// CHECK: %[[V1:.*]] = load i32*, i32** %[[V0]], align 8
8// CHECK: store i32* %[[V1]], i32** %[[BLOCK_CAPTURED0]], align 8
9// CHECK: %[[BLOCK_CAPTURED1:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32*, i32* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32*, i32* }>* %[[BLOCK]], i32 0, i32 6
10// CHECK: %[[V2:.*]] = getelementptr inbounds %[[LAMBDA_CLASS]], %[[LAMBDA_CLASS]]* %[[THIS]], i32 0, i32 1
11// CHECK: %[[V3:.*]] = load i32*, i32** %[[V2]], align 8
12// CHECK: store i32* %[[V3]], i32** %[[BLOCK_CAPTURED1]], align 8
13
14void foo1(int &, int &);
15
16void block_in_lambda(int &s1, int &s2) {
17  auto lambda = [&s1, &s2]() {
18    auto block = ^{
19      foo1(s1, s2);
20    };
21    block();
22  };
23
24  lambda();
25}
26
27namespace CaptureByReference {
28
29id getObj();
30void use(id);
31
32// Block copy/dispose helpers aren't needed because 'a' is captured by
33// reference.
34
35// CHECK-LABEL: define void @_ZN18CaptureByReference5test0Ev(
36// CHECK-LABEL: define internal void @"_ZZN18CaptureByReference5test0EvENK3$_1clEv"(
37// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8** }>* %{{.*}}, i32 0, i32 4
38// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i64 }* @"__block_descriptor_40_e5_v8\01?0ls32l8" to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
39
40void test0() {
41  id a = getObj();
42  [&]{ ^{ a = 0; }(); }();
43}
44
45// Block copy/dispose helpers shouldn't have to retain/release 'a' because it
46// is captured by reference.
47
48// CHECK-LABEL: define void @_ZN18CaptureByReference5test1Ev(
49// CHECK-LABEL: define internal void @"_ZZN18CaptureByReference5test1EvENK3$_2clEv"(
50// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 4
51// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i8*, i8*, i64 }* @"__block_descriptor_56_8_32s40s_e5_v8\01?0l" to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
52
53// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block_8_32s40s(
54// CHECK-NOT: call void @llvm.objc.storeStrong(
55// CHECK: %[[V4:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 5
56// CHECK: %[[V5:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 5
57// CHECK: %[[BLOCKCOPY_SRC:.*]] = load i8*, i8** %[[V4]], align 8
58// CHECK: store i8* null, i8** %[[V5]], align 8
59// CHECK: call void @llvm.objc.storeStrong(i8** %[[V5]], i8* %[[BLOCKCOPY_SRC]])
60// CHECK: %[[V6:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 6
61// CHECK: %[[V7:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 6
62// CHECK: %[[BLOCKCOPY_SRC2:.*]] = load i8*, i8** %[[V6]], align 8
63// CHECK: store i8* null, i8** %[[V7]], align 8
64// CHECK: call void @llvm.objc.storeStrong(i8** %[[V7]], i8* %[[BLOCKCOPY_SRC2]])
65// CHECK-NOT: call void @llvm.objc.storeStrong(
66// CHECK: ret void
67
68// CHECK-LABEL: define linkonce_odr hidden void @__destroy_helper_block_8_32s40s(
69// CHECK: %[[V2:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 5
70// CHECK: %[[V3:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 6
71// CHECK-NOT: call void @llvm.objc.storeStrong(
72// CHECK: call void @llvm.objc.storeStrong(i8** %[[V3]], i8* null)
73// CHECK: call void @llvm.objc.storeStrong(i8** %[[V2]], i8* null)
74// CHECK-NOT: call void @llvm.objc.storeStrong(
75// CHECK: ret void
76
77void test1() {
78  id a = getObj(), b = getObj(), c = getObj();
79  [&a, b, c]{ ^{ a = 0; use(b); use(c); }(); }();
80}
81
82}
83