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
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-10.10 -emit-llvm -fblocks -fobjc-weak -o - %s | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-MODERN
// RUN: %clang_cc1 -triple i386-apple-darwin10 -fobjc-runtime=macosx-fragile-10.10 -emit-llvm -fblocks -fobjc-weak -o - %s | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-FRAGILE
@interface Object
- (instancetype) retain;
- (void) run;
@end
// The ivars in HighlyAlignedSubclass should be placed in the tail-padding
// of the superclass. Ensure that they're still covered by layouts.
@interface HighlyAligned : Object {
__attribute__((aligned(32))) void *array[2];
}
@end
// CHECK-MODERN: @"OBJC_IVAR_$_HighlyAlignedSubclass.ivar2" ={{.*}} global i64 24,
// CHECK-MODERN: @"OBJC_IVAR_$_HighlyAlignedSubclass.ivar" ={{.*}} global i64 16,
// CHECK-MODERN: @OBJC_CLASS_NAME_{{.*}} = {{.*}} c"\02\00"
// CHECK-MODERN: @"_OBJC_CLASS_RO_$_HighlyAlignedSubclass" = {{.*}} {
// CHECK-FRAGILE: @OBJC_INSTANCE_VARIABLES_HighlyAlignedSubclass = {{.*}}, i32 8 }, {{.*}}, i32 12 }]
// CHECK-FRAGILE: @OBJC_CLASS_NAME_{{.*}} = {{.*}} c"\02\00"
// CHECK-FRAGILE: @OBJC_CLASS_HighlyAlignedSubclass
@interface HighlyAlignedSubclass : HighlyAligned {
__weak id ivar;
__weak id ivar2;
}
@end
@implementation HighlyAlignedSubclass @end
// CHECK-MODERN: @OBJC_CLASS_NAME_{{.*}} = {{.*}} c"\01\00"
// CHECK-MODERN: @"_OBJC_CLASS_RO_$_Foo" = {{.*}} { i32 772
// 772 == 0x304
// ^ HasMRCWeakIvars
// ^ HasCXXDestructorOnly
// ^ HasCXXStructors
// CHECK-FRAGILE: @OBJC_CLASS_NAME_{{.*}} = {{.*}} c"\01\00"
// CHECK-FRAGILE: @OBJC_CLASS_Foo = {{.*}} i32 134225921,
// 134225921 == 0x08002001
// ^ HasMRCWeakIvars
// ^ HasCXXStructors
// ^ Factory
@interface Foo : Object {
__weak id ivar;
}
@end
@implementation Foo
// CHECK-LABEL: define internal void @"\01-[Foo .cxx_destruct]"
// CHECK: call void @llvm.objc.destroyWeak
@end
void test1(__weak id x) {}
// CHECK-LABEL: define{{.*}} void @test1
// CHECK: [[X:%.*]] = alloca i8*,
// CHECK-NEXT: @llvm.objc.initWeak
// CHECK-NEXT: @llvm.objc.destroyWeak
// CHECK-NEXT: ret void
void test2(id y) {
__weak id z = y;
}
// CHECK-LABEL: define{{.*}} void @test2
// CHECK: [[Y:%.*]] = alloca i8*,
// CHECK-NEXT: [[Z:%.*]] = alloca i8*,
// CHECK-NEXT: store
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[Y]]
// CHECK-NEXT: call i8* @llvm.objc.initWeak(i8** [[Z]], i8* [[T0]])
// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** [[Z]])
// CHECK-NEXT: ret void
void test3(id y) {
__weak id z;
z = y;
}
// CHECK-LABEL: define{{.*}} void @test3
// CHECK: [[Y:%.*]] = alloca i8*,
// CHECK-NEXT: [[Z:%.*]] = alloca i8*,
// CHECK-NEXT: store
// CHECK-NEXT: store i8* null, i8** [[Z]]
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[Y]]
// CHECK-NEXT: call i8* @llvm.objc.storeWeak(i8** [[Z]], i8* [[T0]])
// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** [[Z]])
// CHECK-NEXT: ret void
void test4(__weak id *p) {
id y = *p;
}
// CHECK-LABEL: define{{.*}} void @test4
// CHECK: [[P:%.*]] = alloca i8**,
// CHECK-NEXT: [[Y:%.*]] = alloca i8*,
// CHECK-NEXT: store
// CHECK-NEXT: [[T0:%.*]] = load i8**, i8*** [[P]]
// CHECK-NEXT: [[T1:%.*]] = call i8* @llvm.objc.loadWeak(i8** [[T0]])
// CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
// CHECK-NEXT: ret void
void test5(__weak id *p) {
id y = [*p retain];
}
// CHECK-LABEL: define{{.*}} void @test5
// CHECK: [[P:%.*]] = alloca i8**,
// CHECK-NEXT: [[Y:%.*]] = alloca i8*,
// CHECK-NEXT: store
// CHECK-NEXT: [[T0:%.*]] = load i8**, i8*** [[P]]
// CHECK-NEXT: [[T1:%.*]] = call i8* @llvm.objc.loadWeakRetained(i8** [[T0]])
// CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
// CHECK-NEXT: ret void
void test6(__weak Foo **p) {
Foo *y = [*p retain];
}
// CHECK-LABEL: define{{.*}} void @test6
// CHECK: [[P:%.*]] = alloca [[FOO:%.*]]**,
// CHECK-NEXT: [[Y:%.*]] = alloca [[FOO]]*,
// CHECK-NEXT: store
// CHECK-NEXT: [[T0:%.*]] = load [[FOO]]**, [[FOO]]*** [[P]]
// CHECK-NEXT: [[T1:%.*]] = bitcast [[FOO]]** [[T0]] to i8**
// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.loadWeakRetained(i8** [[T1]])
// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to [[FOO]]*
// CHECK-NEXT: store [[FOO]]* [[T3]], [[FOO]]** [[Y]]
// CHECK-NEXT: ret void
extern id get_object(void);
extern void use_block(void (^)(void));
void test7(void) {
__weak Foo *p = get_object();
use_block(^{ [p run ]; });
}
// CHECK-LABEL: define{{.*}} void @test7
// CHECK: [[P:%.*]] = alloca [[FOO]]*,
// CHECK: [[T0:%.*]] = call i8* @get_object()
// CHECK-NEXT: [[T1:%.*]] = bitcast i8* [[T0]] to [[FOO]]*
// CHECK-NEXT: [[T2:%.*]] = bitcast [[FOO]]** [[P]] to i8**
// CHECK-NEXT: [[T3:%.*]] = bitcast [[FOO]]* [[T1]] to i8*
// CHECK-NEXT: call i8* @llvm.objc.initWeak(i8** [[T2]], i8* [[T3]])
// CHECK: call void @llvm.objc.copyWeak
// CHECK: call void @use_block
// CHECK: call void @llvm.objc.destroyWeak
// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block
// CHECK: @llvm.objc.copyWeak
// CHECK-LABEL: define linkonce_odr hidden void @__destroy_helper_block
// CHECK: @llvm.objc.destroyWeak
void test8(void) {
__block __weak Foo *p = get_object();
use_block(^{ [p run ]; });
}
// CHECK-LABEL: define{{.*}} void @test8
// CHECK: call i8* @llvm.objc.initWeak
// CHECK-NOT: call void @llvm.objc.copyWeak
// CHECK: call void @use_block
// CHECK: call void @llvm.objc.destroyWeak
// CHECK-LABEL: define internal void @__Block_byref_object_copy
// CHECK: call void @llvm.objc.moveWeak
// CHECK-LABEL: define internal void @__Block_byref_object_dispose
// CHECK: call void @llvm.objc.destroyWeak
// CHECK-LABEL: define{{.*}} void @test9_baseline()
// CHECK: define linkonce_odr hidden void @__copy_helper
// CHECK: define linkonce_odr hidden void @__destroy_helper
void test9_baseline(void) {
Foo *p = get_object();
use_block(^{ [p run]; });
}
// CHECK-LABEL: define{{.*}} void @test9()
// CHECK-NOT: define linkonce_odr hidden void @__copy_helper
// CHECK-NOT: define linkonce_odr hidden void @__destroy_helper
// CHECK: define{{.*}} void @test9_fin()
void test9(void) {
__unsafe_unretained Foo *p = get_object();
use_block(^{ [p run]; });
}
void test9_fin() {}
// CHECK-LABEL: define{{.*}} void @test10()
// CHECK-NOT: define linkonce_odr hidden void @__copy_helper
// CHECK-NOT: define linkonce_odr hidden void @__destroy_helper
// CHECK: define{{.*}} void @test10_fin()
void test10(void) {
typedef __unsafe_unretained Foo *UnsafeFooPtr;
UnsafeFooPtr p = get_object();
use_block(^{ [p run]; });
}
void test10_fin() {}
|
