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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
// RUN: %clang_cc1 -triple i386-apple-darwin9 -fobjc-runtime=macosx-fragile-10.5 -emit-llvm -fblocks -Wno-strict-prototypes -o - %s | FileCheck --check-prefix=CHECK --check-prefix=SIG_STR %s
// RUN: %clang_cc1 -triple i386-apple-darwin9 -fobjc-runtime=macosx-fragile-10.5 -emit-llvm -fblocks -Wno-strict-prototypes -fdisable-block-signature-string -o - %s | FileCheck --check-prefix=CHECK --check-prefix=NO_SIG_STR %s
// Check that there is only one capture (20o) in the copy/dispose function
// names.
// SIG_STR: @[[STR3:.*]] = private unnamed_addr constant [6 x i8] c"v4@?0\00", align 1
// SIG_STR: @[[BLOCK_DESCRIPTOR0:"__block_descriptor_28_4_20o_e5_v4\\01\?0l"]] = linkonce_odr hidden unnamed_addr constant { i32, i32, ptr, ptr, ptr, i32 } { i32 0, i32 28, ptr @__copy_helper_block_4_20o, ptr @__destroy_helper_block_4_20o, ptr @[[STR3]], i32 512 },
// NO_SIG_STR: @[[BLOCK_DESCRIPTOR0:__block_descriptor_28_4_20o_e0_l]] = linkonce_odr hidden unnamed_addr constant { i32, i32, ptr, ptr, ptr, i32 } { i32 0, i32 28, ptr @__copy_helper_block_4_20o, ptr @__destroy_helper_block_4_20o, ptr null, i32 512 },
void (^gb0)(void);
struct S {
void (^F)(struct S*);
} P;
@interface T
- (int)foo: (T* (^)(T*)) x;
@end
void foo(T *P) {
[P foo: 0];
}
@interface A
-(void) im0;
@end
// CHECK: define internal i32 @"__8-[A im0]_block_invoke"(
@implementation A
-(void) im0 {
(void) ^{ return 1; }();
}
@end
@interface B : A @end
@implementation B
-(void) im1 {
^(void) { [self im0]; }();
}
-(void) im2 {
^{ [super im0]; }();
}
-(void) im3 {
^{ ^{[super im0];}(); }();
}
@end
// In-depth test for the initialization of a __weak __block variable.
@interface Test2 -(void) destroy; @end
void test2(Test2 *x) {
extern void test2_helper(void (^)(void));
// CHECK-LABEL: define{{.*}} void @test2(
// CHECK: [[X:%.*]] = alloca ptr,
// CHECK-NEXT: [[WEAKX:%.*]] = alloca [[WEAK_T:%.*]],
// CHECK-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-NEXT: store ptr
// isa=1 for weak byrefs.
// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds nuw [[WEAK_T]], ptr [[WEAKX]], i32 0, i32 0
// CHECK-NEXT: store ptr inttoptr (i32 1 to ptr), ptr [[T0]]
// Forwarding.
// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds nuw [[WEAK_T]], ptr [[WEAKX]], i32 0, i32 1
// CHECK-NEXT: store ptr [[WEAKX]], ptr [[T1]]
// Flags. This is just BLOCK_HAS_COPY_DISPOSE BLOCK_BYREF_LAYOUT_UNRETAINED
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds nuw [[WEAK_T]], ptr [[WEAKX]], i32 0, i32 2
// CHECK-NEXT: store i32 1375731712, ptr [[T2]]
// Size.
// CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds nuw [[WEAK_T]], ptr [[WEAKX]], i32 0, i32 3
// CHECK-NEXT: store i32 28, ptr [[T3]]
// Copy and dispose helpers.
// CHECK-NEXT: [[T4:%.*]] = getelementptr inbounds nuw [[WEAK_T]], ptr [[WEAKX]], i32 0, i32 4
// CHECK-NEXT: store ptr @__Block_byref_object_copy_{{.*}}, ptr [[T4]]
// CHECK-NEXT: [[T5:%.*]] = getelementptr inbounds nuw [[WEAK_T]], ptr [[WEAKX]], i32 0, i32 5
// CHECK-NEXT: store ptr @__Block_byref_object_dispose_{{.*}}, ptr [[T5]]
// Actually capture the value.
// CHECK-NEXT: [[T6:%.*]] = getelementptr inbounds nuw [[WEAK_T]], ptr [[WEAKX]], i32 0, i32 6
// CHECK-NEXT: [[CAPTURE:%.*]] = load ptr, ptr [[X]]
// CHECK-NEXT: store ptr [[CAPTURE]], ptr [[T6]]
// Then we initialize the block, blah blah blah.
// CHECK: call void @test2_helper(
// Finally, kill the variable with BLOCK_FIELD_IS_BYREF.
// CHECK: call void @_Block_object_dispose(ptr [[WEAKX]], i32 24)
__attribute__((objc_gc(weak))) __block Test2 *weakX = x;
test2_helper(^{ [weakX destroy]; });
}
// In the test above, check that the use in the invocation function
// doesn't require a read barrier.
// CHECK-LABEL: define internal void @__test2_block_invoke
// CHECK: [[T0:%.*]] = getelementptr inbounds nuw [[BLOCK_T]], ptr {{%.*}}, i32 0, i32 5
// CHECK-NEXT: [[T1:%.*]] = load ptr, ptr [[T0]]
// CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds nuw [[WEAK_T]]{{.*}}, ptr [[T1]], i32 0, i32 1
// CHECK-NEXT: [[T4:%.*]] = load ptr, ptr [[T3]]
// CHECK-NEXT: [[WEAKX:%.*]] = getelementptr inbounds nuw [[WEAK_T]]{{.*}}, ptr [[T4]], i32 0, i32 6
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[WEAKX]], align 4
// Make sure that ... is appropriately positioned in a block call.
void test3(void (^block)(int, ...)) {
block(0, 1, 2, 3);
}
// CHECK-LABEL: define{{.*}} void @test3(
// CHECK: [[BLOCK:%.*]] = alloca ptr, align 4
// CHECK-NEXT: store ptr
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[BLOCK]], align 4
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds nuw [[BLOCK_T:%.*]], ptr [[T0]], i32 0, i32 3
// CHECK-NEXT: [[T4:%.*]] = load ptr, ptr [[T2]]
// CHECK-NEXT: call void (ptr, i32, ...) [[T4]](ptr noundef [[T0]], i32 noundef 0, i32 noundef 1, i32 noundef 2, i32 noundef 3)
// CHECK-NEXT: ret void
void test4(void (^block)()) {
block(0, 1, 2, 3);
}
// CHECK-LABEL: define{{.*}} void @test4(
// CHECK: [[BLOCK:%.*]] = alloca ptr, align 4
// CHECK-NEXT: store ptr
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[BLOCK]], align 4
// CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds nuw [[BLOCK_T:%.*]], ptr [[T0]], i32 0, i32 3
// CHECK-NEXT: [[T4:%.*]] = load ptr, ptr [[T2]]
// CHECK-NEXT: call void [[T4]](ptr noundef [[T0]], i32 noundef 0, i32 noundef 1, i32 noundef 2, i32 noundef 3)
// CHECK-NEXT: ret void
void test5(A *a) {
__unsafe_unretained A *t = a;
gb0 = ^{ (void)a; (void)t; };
}
// CHECK-LABEL: define void @test5(
// CHECK: %[[FLAGS:.*]] = getelementptr inbounds nuw <{ ptr, i32, i32, ptr, ptr, ptr, ptr }>, ptr %{{.*}}, i32 0, i32 1
// SIG_STR: store i32 -1040187392, ptr %[[FLAGS]], align 4
// NO_SIG_STR: store i32 -2113929216, ptr %[[FLAGS]], align 4
// CHECK: %[[V0:.*]] = getelementptr inbounds nuw <{ ptr, i32, i32, ptr, ptr, ptr, ptr }>, ptr %{{.*}}, i32 0, i32 4
// CHECK: store ptr @[[BLOCK_DESCRIPTOR0]], ptr %[[V0]],
void test6(id a, long long b) {
void (^block)() = ^{ (void)b; (void)a; };
}
// Check that the block literal doesn't have two fields for capture 'a'.
// CHECK-LABEL: define void @test6(
// CHECK: alloca <{ ptr, i32, i32, ptr, ptr, ptr, i64 }>,
|
