1 | // RUN: %clang_cc1 -triple x86_64-apple-darwin -fblocks -emit-llvm -o - %s | FileCheck -check-prefix CHECK -check-prefix CHECK-NOARC %s |
2 | // RUN: %clang_cc1 -triple x86_64-apple-darwin -fblocks -emit-llvm -fobjc-arc -o - %s | FileCheck -check-prefix CHECK -check-prefix CHECK-ARC %s |
3 | |
4 | typedef void (^BlockTy)(void); |
5 | |
6 | union U { |
7 | int *i; |
8 | long long *ll; |
9 | } __attribute__((transparent_union)); |
10 | |
11 | void escapingFunc0(BlockTy); |
12 | void noescapeFunc0(id, __attribute__((noescape)) BlockTy); |
13 | void noescapeFunc1(__attribute__((noescape)) int *); |
14 | void noescapeFunc2(__attribute__((noescape)) id); |
15 | void noescapeFunc3(__attribute__((noescape)) union U); |
16 | |
17 | // Block descriptors of non-escaping blocks don't need pointers to copy/dispose |
18 | // helper functions. |
19 | |
20 | // CHECK: %[[STRUCT_BLOCK_DESCRIPTOR:.*]] = type { i64, i64 } |
21 | |
22 | // When the block is non-escaping, copy/dispose helpers aren't generated, so the |
23 | // block layout string must include information about __strong captures. |
24 | |
25 | // CHECK-NOARC: %[[STRUCT_BLOCK_BYREF_B0:.*]] = type { i8*, %[[STRUCT_BLOCK_BYREF_B0]]*, i32, i32, i8*, %[[STRUCT_S0:.*]] } |
26 | // CHECK-ARC: %[[STRUCT_BLOCK_BYREF_B0:.*]] = type { i8*, %[[STRUCT_BLOCK_BYREF_B0]]*, i32, i32, i8*, i8*, i8*, %[[STRUCT_S0:.*]] } |
27 | // CHECK: %[[STRUCT_S0]] = type { i8*, i8* } |
28 | // CHECK: @[[BLOCK_DESCIPTOR_TMP_2:.*ls32l8"]] = linkonce_odr hidden unnamed_addr constant { i64, i64, i8*, i64 } { i64 0, i64 40, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @{{.*}}, i32 0, i32 0), i64 256 }, align 8 |
29 | |
30 | // CHECK-LABEL: define void @test0( |
31 | // CHECK: call void @noescapeFunc0({{.*}}, {{.*}} nocapture {{.*}}) |
32 | // CHECK: declare void @noescapeFunc0(i8*, {{.*}} nocapture) |
33 | void test0(BlockTy b) { |
34 | noescapeFunc0(0, b); |
35 | } |
36 | |
37 | // CHECK-LABEL: define void @test1( |
38 | // CHECK: call void @noescapeFunc1({{.*}} nocapture {{.*}}) |
39 | // CHECK: declare void @noescapeFunc1({{.*}} nocapture) |
40 | void test1(int *i) { |
41 | noescapeFunc1(i); |
42 | } |
43 | |
44 | // CHECK-LABEL: define void @test2( |
45 | // CHECK: call void @noescapeFunc2({{.*}} nocapture {{.*}}) |
46 | // CHECK: declare void @noescapeFunc2({{.*}} nocapture) |
47 | void test2(id i) { |
48 | noescapeFunc2(i); |
49 | } |
50 | |
51 | // CHECK-LABEL: define void @test3( |
52 | // CHECK: call void @noescapeFunc3({{.*}} nocapture {{.*}}) |
53 | // CHECK: declare void @noescapeFunc3({{.*}} nocapture) |
54 | void test3(union U u) { |
55 | noescapeFunc3(u); |
56 | } |
57 | |
58 | // CHECK: define internal void @"\01-[C0 m0:]"({{.*}}, {{.*}}, {{.*}} nocapture {{.*}}) |
59 | |
60 | // CHECK-LABEL: define void @test4( |
61 | // CHECK: call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i32*)*)(i8* {{.*}}, i8* {{.*}}, i32* nocapture {{.*}}) |
62 | |
63 | @interface C0 |
64 | -(void) m0:(int*)__attribute__((noescape)) p0; |
65 | @end |
66 | |
67 | @implementation C0 |
68 | -(void) m0:(int*)__attribute__((noescape)) p0 { |
69 | } |
70 | @end |
71 | |
72 | void test4(C0 *c0, int *p) { |
73 | [c0 m0:p]; |
74 | } |
75 | |
76 | // CHECK-LABEL: define void @test5( |
77 | // CHECK: call void {{.*}}(i8* bitcast ({ i8**, i32, i32, i8*, {{.*}} }* @{{.*}} to i8*), i32* nocapture {{.*}}) |
78 | // CHECK: call void {{.*}}(i8* {{.*}}, i32* nocapture {{.*}}) |
79 | // CHECK: define internal void @{{.*}}(i8* {{.*}}, i32* nocapture {{.*}}) |
80 | |
81 | typedef void (^BlockTy2)(__attribute__((noescape)) int *); |
82 | |
83 | void test5(BlockTy2 b, int *p) { |
84 | ^(int *__attribute__((noescape)) p0){}(p); |
85 | b(p); |
86 | } |
87 | |
88 | // If the block is non-escaping, set the BLOCK_IS_NOESCAPE and BLOCK_IS_GLOBAL |
89 | // bits of field 'flags' and set the 'isa' field to 'NSConcreteGlobalBlock'. |
90 | |
91 | // CHECK: define void @test6(i8* %{{.*}}, i8* %[[B:.*]]) |
92 | // CHECK: %{{.*}} = alloca i8*, align 8 |
93 | // CHECK: %[[B_ADDR:.*]] = alloca i8*, align 8 |
94 | // CHECK: %[[BLOCK:.*]] = alloca <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, align 8 |
95 | // CHECK-NOARC: store i8* %[[B]], i8** %[[B_ADDR]], align 8 |
96 | // CHECK-ARC: store i8* null, i8** %[[B_ADDR]], align 8 |
97 | // CHECK-ARC: call void @llvm.objc.storeStrong(i8** %[[B_ADDR]], i8* %[[B]]) |
98 | // CHECK-ARC: %[[V0:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %[[BLOCK]], i32 0, i32 5 |
99 | // CHECK: %[[BLOCK_ISA:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %[[BLOCK]], i32 0, i32 0 |
100 | // CHECK: store i8* bitcast (i8** @_NSConcreteGlobalBlock to i8*), i8** %[[BLOCK_ISA]], align 8 |
101 | // CHECK: %[[BLOCK_FLAGS:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %[[BLOCK]], i32 0, i32 1 |
102 | // CHECK: store i32 -796917760, i32* %[[BLOCK_FLAGS]], align 8 |
103 | // CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %[[BLOCK]], i32 0, i32 4 |
104 | // CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i64 }* @[[BLOCK_DESCIPTOR_TMP_2]] to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8 |
105 | // CHECK: %[[BLOCK_CAPTURED:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %[[BLOCK]], i32 0, i32 5 |
106 | // CHECK-NOARC: %[[V1:.*]] = load i8*, i8** %[[B_ADDR]], align 8 |
107 | // CHECK-NOARC: store i8* %[[V1]], i8** %[[BLOCK_CAPTURED]], align 8 |
108 | // CHECK-ARC: %[[V2:.*]] = load i8*, i8** %[[B_ADDR]], align 8 |
109 | // CHECK-ARC: %[[V3:.*]] = call i8* @llvm.objc.retain(i8* %[[V2]]) |
110 | // CHECK-ARC: store i8* %[[V3]], i8** %[[BLOCK_CAPTURED]], align 8 |
111 | // CHECK: call void @noescapeFunc0( |
112 | // CHECK-ARC: call void @llvm.objc.storeStrong(i8** %[[V0]], i8* null) |
113 | // CHECK-ARC: call void @llvm.objc.storeStrong(i8** %[[B_ADDR]], i8* null) |
114 | |
115 | // Non-escaping blocks don't need copy/dispose helper functions. |
116 | |
117 | // CHECK-NOT: define internal void @__copy_helper_block_ |
118 | // CHECK-NOT: define internal void @__destroy_helper_block_ |
119 | |
120 | void func(id); |
121 | |
122 | void test6(id a, id b) { |
123 | noescapeFunc0(a, ^{ func(b); }); |
124 | } |
125 | |
126 | // We don't need either the byref helper functions or the byref structs for |
127 | // __block variables that are not captured by escaping blocks. |
128 | |
129 | // CHECK: define void @test7( |
130 | // CHECK: alloca i8*, align 8 |
131 | // CHECK: %[[B0:.*]] = alloca i8*, align 8 |
132 | // CHECK: %[[BLOCK:.*]] = alloca <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8** }>, align 8 |
133 | // CHECK: %[[BLOCK_CAPTURED:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8** }>* %[[BLOCK]], i32 0, i32 5 |
134 | // CHECK: store i8** %[[B0]], i8*** %[[BLOCK_CAPTURED]], align 8 |
135 | |
136 | // CHECK-ARC-NOT: define internal void @__Block_byref_object_copy_ |
137 | // CHECK-ARC-NOT: define internal void @__Block_byref_object_dispose_ |
138 | |
139 | void test7() { |
140 | id a; |
141 | __block id b0; |
142 | noescapeFunc0(a, ^{ (void)b0; }); |
143 | } |
144 | |
145 | // __block variables captured by escaping blocks need byref helper functions. |
146 | |
147 | // CHECK: define void @test8( |
148 | // CHECK: %[[A:.*]] = alloca i8*, align 8 |
149 | // CHECK: %[[B0:.*]] = alloca %[[STRUCT_BLOCK_BYREF_B0]], align 8 |
150 | // CHECK: alloca <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, align 8 |
151 | // CHECK: %[[BLOCK1:.*]] = alloca <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, align 8 |
152 | // CHECK: %[[BLOCK_CAPTURED7:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8* }>* %[[BLOCK1]], i32 0, i32 5 |
153 | // CHECK: %[[V3:.*]] = bitcast %[[STRUCT_BLOCK_BYREF_B0]]* %[[B0]] to i8* |
154 | // CHECK: store i8* %[[V3]], i8** %[[BLOCK_CAPTURED7]], align 8 |
155 | |
156 | // CHECK-ARC: define internal void @__Block_byref_object_copy_ |
157 | // CHECK-ARC: define internal void @__Block_byref_object_dispose_ |
158 | // CHECK: define linkonce_odr hidden void @__copy_helper_block_ |
159 | // CHECK: define linkonce_odr hidden void @__destroy_helper_block_ |
160 | |
161 | struct S0 { |
162 | id a, b; |
163 | }; |
164 | |
165 | void test8() { |
166 | id a; |
167 | __block struct S0 b0; |
168 | noescapeFunc0(a, ^{ (void)b0; }); |
169 | escapingFunc0(^{ (void)b0; }); |
170 | } |
171 | |