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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin -fblocks -fobjc-arc -fobjc-runtime-has-weak -emit-llvm %s -o - | FileCheck -check-prefix CHECK-LP64 %s
// RUN: %clang_cc1 -triple x86_64-apple-darwin -O1 -fblocks -fobjc-arc -fobjc-runtime-has-weak -emit-llvm %s -o - | FileCheck -check-prefix CHECK-LP64-OPT %s
// rdar://9503326
// rdar://9606600
extern void use(id);
extern void use_block(void (^)(void));
struct NSFastEnumerationState;
@interface NSArray
- (unsigned long) countByEnumeratingWithState: (struct NSFastEnumerationState*) state
objects: (id*) buffer
count: (unsigned long) bufferSize;
@end;
void test0(NSArray *array) {
// 'x' should be initialized without a retain.
// We should actually do a non-constant capture, and that
// capture should require a retain.
for (id x in array) {
use_block(^{ use(x); });
}
}
// CHECK-LP64-LABEL: define{{.*}} void @test0(
// CHECK-LP64: [[ARRAY:%.*]] = alloca [[ARRAY_T:%.*]]*,
// CHECK-LP64-NEXT: [[X:%.*]] = alloca i8*,
// CHECK-LP64-NEXT: [[STATE:%.*]] = alloca [[STATE_T:%.*]],
// CHECK-LP64-NEXT: [[BUFFER:%.*]] = alloca [16 x i8*], align 8
// CHECK-LP64-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-LP64-OPT-LABEL: define{{.*}} void @test0
// CHECK-LP64-OPT: [[STATE:%.*]] = alloca [[STATE_T:%.*]], align 8
// CHECK-LP64-OPT-NEXT: [[BUFFER:%.*]] = alloca [16 x i8*], align 8
// CHECK-LP64-OPT-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]], align 8
// Initialize 'array'.
// CHECK-LP64-NEXT: store [[ARRAY_T]]* null, [[ARRAY_T]]** [[ARRAY]]
// CHECK-LP64-NEXT: [[ZERO:%.*]] = bitcast [[ARRAY_T]]** [[ARRAY]] to i8**
// CHECK-LP64-NEXT: [[ONE:%.*]] = bitcast [[ARRAY_T]]* {{%.*}} to i8*
// CHECK-LP64-NEXT: call void @llvm.objc.storeStrong(i8** [[ZERO]], i8* [[ONE]]) [[NUW:#[0-9]+]]
// Initialize the fast enumaration state.
// CHECK-LP64-NEXT: [[T0:%.*]] = bitcast [[STATE_T]]* [[STATE]] to i8*
// CHECK-LP64-NEXT: call void @llvm.memset.p0i8.i64(i8* align 8 [[T0]], i8 0, i64 64, i1 false)
// Evaluate the collection expression and retain.
// CHECK-LP64-NEXT: [[T0:%.*]] = load [[ARRAY_T]]*, [[ARRAY_T]]** [[ARRAY]], align 8
// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[T0]] to i8*
// CHECK-LP64-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retain(i8* [[T1]])
// CHECK-LP64-NEXT: [[SAVED_ARRAY:%.*]] = bitcast i8* [[T2]] to [[ARRAY_T]]*
// Call the enumeration method.
// CHECK-LP64-NEXT: [[T0:%.*]] = load i8*, i8** @OBJC_SELECTOR_REFERENCES_
// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[SAVED_ARRAY]] to i8*
// CHECK-LP64-NEXT: [[SIZE:%.*]] = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, [[STATE_T]]*, [16 x i8*]*, i64)*)(i8* [[T1]], i8* [[T0]], [[STATE_T]]* [[STATE]], [16 x i8*]* [[BUFFER]], i64 16)
// Check for a nonzero result.
// CHECK-LP64-NEXT: [[T0:%.*]] = icmp eq i64 [[SIZE]], 0
// CHECK-LP64-NEXT: br i1 [[T0]]
// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[STATE_T]], [[STATE_T]]* [[STATE]], i32 0, i32 1
// CHECK-LP64-NEXT: [[T1:%.*]] = load i8**, i8*** [[T0]]
// CHECK-LP64-NEXT: [[T2:%.*]] = getelementptr i8*, i8** [[T1]], i64
// CHECK-LP64-NEXT: [[T3:%.*]] = load i8*, i8** [[T2]]
// CHECK-LP64-NEXT: store i8* [[T3]], i8** [[X]]
// CHECK-LP64: [[CAPTURED:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
// CHECK-LP64-NEXT: [[T1:%.*]] = load i8*, i8** [[X]]
// CHECK-LP64-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retain(i8* [[T1]])
// CHECK-LP64-NEXT: store i8* [[T2]], i8** [[CAPTURED]]
// CHECK-LP64-NEXT: [[BLOCK1:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]]
// CHECK-LP64-NEXT: call void @use_block(void ()* [[BLOCK1]])
// CHECK-LP64-NEXT: call void @llvm.objc.storeStrong(i8** [[CAPTURED]], i8* null)
// CHECK-LP64-NOT: call void (...) @llvm.objc.clang.arc.use(
// CHECK-LP64-OPT: [[D0:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i64 0, i32 5
// CHECK-LP64-OPT: [[CAPTURE:%.*]] = load i8*, i8** [[D0]]
// CHECK-LP64-OPT: call void (...) @llvm.objc.clang.arc.use(i8* [[CAPTURE]])
// CHECK-LP64: [[T0:%.*]] = load i8*, i8** @OBJC_SELECTOR_REFERENCES_
// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[SAVED_ARRAY]] to i8*
// CHECK-LP64-NEXT: [[SIZE:%.*]] = call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*, [[STATE_T]]*, [16 x i8*]*, i64)*)(i8* [[T1]], i8* [[T0]], [[STATE_T]]* [[STATE]], [16 x i8*]* [[BUFFER]], i64 16)
// Release the array.
// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[SAVED_ARRAY]] to i8*
// CHECK-LP64-NEXT: call void @llvm.objc.release(i8* [[T0]])
// Destroy 'array'.
// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]** [[ARRAY]] to i8**
// CHECK-LP64-NEXT: call void @llvm.objc.storeStrong(i8** [[T0]], i8* null)
// CHECK-LP64-NEXT: ret void
// CHECK-LP64-LABEL: define internal void @__test0_block_invoke
// CHECK-LP64: [[BLOCK:%.*]] = bitcast i8* {{%.*}} to [[BLOCK_T]]*
// CHECK-LP64-NOT: ret
// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
// CHECK-LP64-NEXT: [[T2:%.*]] = load i8*, i8** [[T0]], align 8
// CHECK-LP64-NEXT: call void @use(i8* [[T2]])
void test1(NSArray *array) {
for (__weak id x in array) {
use_block(^{ use(x); });
}
}
// CHECK-LP64-LABEL: define{{.*}} void @test1(
// CHECK-LP64: alloca [[ARRAY_T:%.*]]*,
// CHECK-LP64-NEXT: [[X:%.*]] = alloca i8*,
// CHECK-LP64-NEXT: [[STATE:%.*]] = alloca [[STATE_T:%.*]],
// CHECK-LP64-NEXT: alloca [16 x i8*], align 8
// CHECK-LP64-NEXT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[STATE_T]], [[STATE_T]]* [[STATE]], i32 0, i32 1
// CHECK-LP64-NEXT: [[T1:%.*]] = load i8**, i8*** [[T0]]
// CHECK-LP64-NEXT: [[T2:%.*]] = getelementptr i8*, i8** [[T1]], i64
// CHECK-LP64-NEXT: [[T3:%.*]] = load i8*, i8** [[T2]]
// CHECK-LP64-NEXT: call i8* @llvm.objc.initWeak(i8** [[X]], i8* [[T3]])
// CHECK-LP64: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
// CHECK-LP64-NEXT: call void @llvm.objc.copyWeak(i8** [[T0]], i8** [[X]])
// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]] to
// CHECK-LP64: call void @use_block
// CHECK-LP64-NEXT: call void @llvm.objc.destroyWeak(i8** [[T0]])
// CHECK-LP64-NEXT: call void @llvm.objc.destroyWeak(i8** [[X]])
// rdar://problem/9817306
@interface Test2
- (NSArray *) array;
@end
void test2(Test2 *a) {
for (id x in a.array) {
use(x);
}
}
// CHECK-LP64-LABEL: define{{.*}} void @test2(
// CHECK-LP64: [[T0:%.*]] = call [[ARRAY_T]]* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to [[ARRAY_T]]* (i8*, i8*)*)(
// CHECK-LP64-NEXT: [[T1:%.*]] = bitcast [[ARRAY_T]]* [[T0]] to i8*
// CHECK-LP64-NEXT: [[T2:%.*]] = notail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* [[T1]])
// CHECK-LP64-NEXT: [[COLL:%.*]] = bitcast i8* [[T2]] to [[ARRAY_T]]*
// Make sure it's not immediately released before starting the iteration.
// CHECK-LP64-NEXT: load i8*, i8** @OBJC_SELECTOR_REFERENCES_
// CHECK-LP64-NEXT: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[COLL]] to i8*
// CHECK-LP64-NEXT: @objc_msgSend
// This bitcast is for the mutation check.
// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[COLL]] to i8*
// CHECK-LP64-NEXT: @objc_enumerationMutation
// This bitcast is for the 'next' message send.
// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[COLL]] to i8*
// CHECK-LP64-NEXT: @objc_msgSend
// This bitcast is for the final release.
// CHECK-LP64: [[T0:%.*]] = bitcast [[ARRAY_T]]* [[COLL]] to i8*
// CHECK-LP64-NEXT: call void @llvm.objc.release(i8* [[T0]])
// Check that the 'continue' label is positioned appropriately
// relative to the collection clenaup.
void test3(NSArray *array) {
for (id x in array) {
if (!x) continue;
use(x);
}
// CHECK-LP64-LABEL: define{{.*}} void @test3(
// CHECK-LP64: [[ARRAY:%.*]] = alloca [[ARRAY_T]]*, align 8
// CHECK-LP64-NEXT: [[X:%.*]] = alloca i8*, align 8
// CHECK-LP64: [[T0:%.*]] = load i8*, i8** [[X]], align 8
// CHECK-LP64-NEXT: [[T1:%.*]] = icmp ne i8* [[T0]], null
// CHECK-LP64-NEXT: br i1 [[T1]],
// CHECK-LP64: br label [[L:%[^ ]+]]
// CHECK-LP64: [[T0:%.*]] = load i8*, i8** [[X]], align 8
// CHECK-LP64-NEXT: call void @use(i8* [[T0]])
// CHECK-LP64-NEXT: br label [[L]]
}
@interface NSObject @end
@interface I1 : NSObject
- (NSArray *) foo1:(void (^)(void))block;
- (void) foo2;
@end
NSArray *array4;
@implementation I1 : NSObject
- (NSArray *) foo1:(void (^)(void))block {
block();
return array4;
}
- (void) foo2 {
for (id x in [self foo1:^{ use(self); }]) {
use(x);
break;
}
}
@end
// CHECK-LP64-LABEL: define internal void @"\01-[I1 foo2]"(
// CHECK-LP64: [[SELF_ADDR:%.*]] = alloca [[TY:%.*]]*,
// CHECK-LP64: [[BLOCK:%.*]] = alloca <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, [[TY]]* }>,
// CHECK-LP64: store [[TY]]* %self, [[TY]]** [[SELF_ADDR]]
// CHECK-LP64: [[BC:%.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, [[TY]]* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, [[TY]]* }>* [[BLOCK]], i32 0, i32 5
// CHECK-LP64: [[T1:%.*]] = load [[TY]]*, [[TY]]** [[SELF_ADDR]]
// CHECK-LP64: [[T2:%.*]] = bitcast [[TY]]* [[T1]] to i8*
// CHECK-LP64: call i8* @llvm.objc.retain(i8* [[T2]])
// CHECK-LP64-OPT-LABEL: define internal void @"\01-[I1 foo2]"(
// CHECK-LP64-OPT: [[TY:%.*]]* %self
// CHECK-LP64-OPT: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]],
// CHECK-LP64-OPT: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]], [[BLOCK_T]]* [[BLOCK]], i64 0, i32 5
// CHECK-LP64: [[T5:%.*]] = bitcast [[TY]]** [[BC]] to i8**
// CHECK-LP64: call void @llvm.objc.storeStrong(i8** [[T5]], i8* null)
// CHECK-LP64-NOT: call void (...) @llvm.objc.clang.arc.use([[TY]]* [[T5]])
// CHECK-LP64: switch i32 {{%.*}}, label %[[UNREACHABLE:.*]] [
// CHECK-LP64-NEXT: i32 0, label %[[CLEANUP_CONT:.*]]
// CHECK-LP64-NEXT: i32 2, label %[[FORCOLL_END:.*]]
// CHECK-LP64-NEXT: ]
// CHECK-LP64-OPT: [[T5:%.*]] = load [[TY]]*, [[TY]]** [[T0]]
// CHECK-LP64-OPT: call void (...) @llvm.objc.clang.arc.use([[TY]]* [[T5]])
// CHECK-LP64: {{^|:}}[[CLEANUP_CONT]]
// CHECK-LP64-NEXT: br label %[[FORCOLL_END]]
// CHECK-LP64: {{^|:}}[[FORCOLL_END]]
// CHECK-LP64-NEXT: ret void
// CHECK-LP64: {{^|:}}[[UNREACHABLE]]
// CHECK-LP64-NEXT: unreachable
// CHECK-LP64: attributes [[NUW]] = { nounwind }
|
