-
Notifications
You must be signed in to change notification settings - Fork 2
/
Copy pathlambda-to-block.mm
76 lines (60 loc) · 5.11 KB
/
lambda-to-block.mm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
// RUN: %clang_cc1 -x objective-c++ -fblocks -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 -std=c++1z -emit-llvm -o - %s | FileCheck %s
// rdar://31385153
// Shouldn't crash!
// CHECK: %[[STRUCT_COPYABLE:.*]] = type { i8 }
// CHECK: %[[STRUCT_BLOCK_DESCRIPTOR:.*]] = type { i64, i64 }
// CHECK: %[[CLASS_ANON:.*]] = type { %[[STRUCT_COPYABLE]] }
// CHECK: %[[CLASS_ANON_0:.*]] = type { %[[STRUCT_COPYABLE]] }
// CHECK: %[[CLASS_ANON_1:.*]] = type { %[[STRUCT_COPYABLE]] }
// CHECK: %[[CLASS_ANON_2:.*]] = type { %[[STRUCT_COPYABLE]] }
// CHECK: @[[BLOCK_DESC0:.*]] = internal constant { i64, i64, i8*, i8*, i8*, i8* } { i64 0, i64 33, i8* bitcast (void (i8*, i8*)* @[[COPY_HELPER0:.*__copy_helper_block_.*]] to i8*), i8* bitcast (void (i8*)* @__destroy_helper_block{{.*}} to i8*), {{.*}}}, align 8
// CHECK: @[[BLOCK_DESC1:.*]] = internal constant { i64, i64, i8*, i8*, i8*, i8* } { i64 0, i64 33, i8* bitcast (void (i8*, i8*)* @[[COPY_HELPER1:.*__copy_helper_block_.*]] to i8*), i8* bitcast (void (i8*)* @__destroy_helper_block{{.*}} to i8*), {{.*}}}, align 8
// CHECK: @[[BLOCK_DESC2:.*]] = internal constant { i64, i64, i8*, i8*, i8*, i8* } { i64 0, i64 33, i8* bitcast (void (i8*, i8*)* @[[COPY_HELPER2:.*__copy_helper_block_.*]] to i8*), i8* bitcast (void (i8*)* @__destroy_helper_block{{.*}} to i8*), {{.*}}}, align 8
// CHECK: @[[BLOCK_DESC3:.*]] = internal constant { i64, i64, i8*, i8*, i8*, i8* } { i64 0, i64 33, i8* bitcast (void (i8*, i8*)* @[[COPY_HELPER3:.*__copy_helper_block_.*]] to i8*), i8* bitcast (void (i8*)* @__destroy_helper_block{{.*}} to i8*), {{.*}}}, align 8
// CHECK: define void @_Z9hasLambda8Copyable(
// CHECK: %[[BLOCK:.*]] = alloca <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, %[[CLASS_ANON]] }>, align 8
// CHECK: %[[BLOCK1:.*]] = alloca <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, %[[CLASS_ANON_0]] }>, align 8
// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, %[[CLASS_ANON]] }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, %[[CLASS_ANON]] }>* %[[BLOCK]], i32 0, i32 4
// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i8*, i8*, i8* }* @[[BLOCK_DESC0]] to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
// CHECK: %[[BLOCK_DESCRIPTOR6:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, %[[CLASS_ANON_0]] }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, %[[CLASS_ANON_0]] }>* %[[BLOCK1]], i32 0, i32 4
// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i8*, i8*, i8* }* @[[BLOCK_DESC1]] to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR6]], align 8
void takesBlock(void (^)(void));
struct Copyable {
Copyable(const Copyable &x);
};
// Check that each block has its block descriptor and helper function.
void hasLambda(Copyable x) {
takesBlock([x] () { });
takesBlock([x] () { });
}
// CHECK: define internal void @[[COPY_HELPER0]]
// CHECK: call void @"_ZZ9hasLambda8CopyableEN3$_0C1ERKS0_"
// CHECK: define internal void @[[COPY_HELPER1]]
// CHECK: define void @_Z17testHelperMerging8Copyable(
// CHECK: %[[CALL:.*]] = call void ()* @[[CONV_FUNC0:.*]](%[[CLASS_ANON_1]]*
// CHECK: call void @_Z10takesBlockU13block_pointerFvvE(void ()* %[[CALL]])
// CHECK: %[[CALL1:.*]] = call void ()* @[[CONV_FUNC0]](%[[CLASS_ANON_1]]*
// CHECK: call void @_Z10takesBlockU13block_pointerFvvE(void ()* %[[CALL1]])
// CHECK: %[[CALL2:.*]] = call void ()* @[[CONV_FUNC1:.*]](%[[CLASS_ANON_2]]*
// CHECK: call void @_Z10takesBlockU13block_pointerFvvE(void ()* %[[CALL2]])
// CHECK: define internal void ()* @[[CONV_FUNC0]](
// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, %[[CLASS_ANON_1]] }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, %[[CLASS_ANON_1]] }>* %{{.*}}, i32 0, i32 4
// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i8*, i8*, i8* }* @[[BLOCK_DESC2]] to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
// CHECK: define internal void ()* @[[CONV_FUNC1]](
// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, %[[CLASS_ANON_2]] }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, %[[CLASS_ANON_2]] }>* %{{.*}}, i32 0, i32 4
// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i8*, i8*, i8* }* @[[BLOCK_DESC3]] to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
// CHECK-LABEL: define internal void @"_ZZ9hasLambda8CopyableEN3$_0C2ERKS0_"
// CHECK: call void @_ZN8CopyableC1ERKS_
// CHECK: define internal void @[[COPY_HELPER2]]
// CHECK: define internal void @[[COPY_HELPER3]]
void testHelperMerging(Copyable x) {
auto lambda0 = [x]{};
auto lambda1 = [x]{};
takesBlock(lambda0);
// This block has the same helper functions and a descriptor as the block
// created above.
takesBlock(lambda0);
// This block has different helper functions and a descriptor as the blocks
// created above.
takesBlock(lambda1);
}