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
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
| // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-runtime-has-weak -fblocks -fobjc-arc -O2 -disable-llvm-passes -o - %s | FileCheck %s
struct NSFastEnumerationState;
@interface NSArray
- (unsigned long) countByEnumeratingWithState: (struct NSFastEnumerationState*) state
objects: (id*) buffer
count: (unsigned long) bufferSize;
@end;
NSArray *nsarray() { return 0; }
// CHECK: define [[NSARRAY:%.*]]* @_Z7nsarrayv()
void use(id);
// rdar://problem/9315552
// The analogous ObjC testcase test46 in arr.m.
void test0(__weak id *wp, __weak volatile id *wvp) {
extern id test0_helper(void);
// TODO: this is sub-optimal, we should retain at the actual call site.
// TODO: in the non-volatile case, we do not need to be reloading.
// CHECK: [[T0:%.*]] = call i8* @_Z12test0_helperv()
// CHECK-NEXT: [[T1:%.*]] = notail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* [[T0]])
// CHECK-NEXT: [[T2:%.*]] = load i8**, i8*** {{%.*}}, align 8
// CHECK-NEXT: [[T3:%.*]] = call i8* @llvm.objc.storeWeak(i8** [[T2]], i8* [[T1]])
// CHECK-NEXT: [[T4:%.*]] = call i8* @llvm.objc.retain(i8* [[T3]])
// CHECK-NEXT: store i8* [[T4]], i8**
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T1]])
id x = *wp = test0_helper();
// CHECK: [[T0:%.*]] = call i8* @_Z12test0_helperv()
// CHECK-NEXT: [[T1:%.*]] = notail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* [[T0]])
// CHECK-NEXT: [[T2:%.*]] = load i8**, i8*** {{%.*}}, align 8
// CHECK-NEXT: [[T3:%.*]] = call i8* @llvm.objc.storeWeak(i8** [[T2]], i8* [[T1]])
// CHECK-NEXT: [[T4:%.*]] = call i8* @llvm.objc.loadWeakRetained(i8** [[T2]])
// CHECK-NEXT: store i8* [[T4]], i8**
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T1]])
id y = *wvp = test0_helper();
}
// rdar://problem/9320648
struct Test1_helper { Test1_helper(); };
@interface Test1 @end
@implementation Test1 { Test1_helper x; } @end
// CHECK: define internal i8* @"\01-[Test1 .cxx_construct]"(
// CHECK: call void @_ZN12Test1_helperC1Ev(
// CHECK-NEXT: load
// CHECK-NEXT: bitcast
// CHECK-NEXT: ret i8*
void test34(int cond) {
__strong id strong;
__weak id weak;
extern void test34_sink(id *);
test34_sink(cond ? &strong : 0);
test34_sink(cond ? &weak : 0);
// CHECK-LABEL: define void @_Z6test34i(
// CHECK: [[COND:%.*]] = alloca i32
// CHECK-NEXT: [[STRONG:%.*]] = alloca i8*
// CHECK-NEXT: [[WEAK:%.*]] = alloca i8*
// CHECK-NEXT: [[TEMP1:%.*]] = alloca i8*
// CHECK-NEXT: [[TEMP2:%.*]] = alloca i8*
// CHECK-NEXT: [[CONDCLEANUPSAVE:%.*]] = alloca i8*
// CHECK-NEXT: [[CONDCLEANUP:%.*]] = alloca i1
// CHECK-NEXT: store i32
// CHECK-NEXT: [[STRONGP:%.*]] = bitcast i8** [[STRONG]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[STRONGP]])
// CHECK-NEXT: store i8* null, i8** [[STRONG]]
// CHECK-NEXT: [[WEAKP:%.*]] = bitcast i8** [[WEAK]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[WEAKP]])
// CHECK-NEXT: call i8* @llvm.objc.initWeak(i8** [[WEAK]], i8* null)
// CHECK-NEXT: [[T0:%.*]] = load i32, i32* [[COND]]
// CHECK-NEXT: [[T1:%.*]] = icmp ne i32 [[T0]], 0
// CHECK: [[ARG:%.*]] = phi i8**
// CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null
// CHECK-NEXT: [[T1:%.*]] = select i1 [[T0]], i8** null, i8** [[TEMP1]]
// CHECK-NEXT: br i1 [[T0]],
// CHECK: [[T0:%.*]] = load i8*, i8** [[ARG]]
// CHECK-NEXT: store i8* [[T0]], i8** [[TEMP1]]
// CHECK-NEXT: br label
// CHECK: [[W0:%.*]] = phi i8* [ [[T0]], {{%.*}} ], [ undef, {{%.*}} ]
// CHECK: call void @_Z11test34_sinkPU15__autoreleasingP11objc_object(i8** [[T1]])
// CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null
// CHECK-NEXT: br i1 [[T0]],
// CHECK: [[T0:%.*]] = load i8*, i8** [[TEMP1]]
// CHECK-NEXT: [[T1:%.*]] = call i8* @llvm.objc.retain(i8* [[T0]])
// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.use(i8* [[W0]])
// CHECK-NEXT: [[T2:%.*]] = load i8*, i8** [[ARG]]
// CHECK-NEXT: store i8* [[T1]], i8** [[ARG]]
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T2]])
// CHECK-NEXT: br label
// CHECK: [[T0:%.*]] = load i32, i32* [[COND]]
// CHECK-NEXT: [[T1:%.*]] = icmp ne i32 [[T0]], 0
// CHECK: [[ARG:%.*]] = phi i8**
// CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null
// CHECK-NEXT: [[T1:%.*]] = select i1 [[T0]], i8** null, i8** [[TEMP2]]
// CHECK-NEXT: store i1 false, i1* [[CONDCLEANUP]]
// CHECK-NEXT: br i1 [[T0]],
// CHECK: [[T0:%.*]] = call i8* @llvm.objc.loadWeakRetained(i8** [[ARG]])
// CHECK-NEXT: store i8* [[T0]], i8** [[CONDCLEANUPSAVE]]
// CHECK-NEXT: store i1 true, i1* [[CONDCLEANUP]]
// CHECK-NEXT: store i8* [[T0]], i8** [[TEMP2]]
// CHECK-NEXT: br label
// CHECK: call void @_Z11test34_sinkPU15__autoreleasingP11objc_object(i8** [[T1]])
// CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null
// CHECK-NEXT: br i1 [[T0]],
// CHECK: [[T0:%.*]] = load i8*, i8** [[TEMP2]]
// CHECK-NEXT: call i8* @llvm.objc.storeWeak(i8** [[ARG]], i8* [[T0]])
// CHECK-NEXT: br label
// CHECK: call void @llvm.objc.destroyWeak(i8** [[WEAK]])
// CHECK: ret void
}
struct Test35_Helper {
static id makeObject1() __attribute__((ns_returns_retained));
id makeObject2() __attribute__((ns_returns_retained));
static id makeObject3();
id makeObject4();
};
// CHECK-LABEL: define void @_Z6test3513Test35_HelperPS_
void test35(Test35_Helper x0, Test35_Helper *x0p) {
// CHECK: call void @llvm.lifetime.start
// CHECK: call i8* @_ZN13Test35_Helper11makeObject1Ev
// CHECK-NOT: call i8* @llvm.objc.retain
id obj1 = Test35_Helper::makeObject1();
// CHECK: call void @llvm.lifetime.start
// CHECK: call i8* @_ZN13Test35_Helper11makeObject2Ev
// CHECK-NOT: call i8* @llvm.objc.retain
id obj2 = x0.makeObject2();
// CHECK: call void @llvm.lifetime.start
// CHECK: call i8* @_ZN13Test35_Helper11makeObject2Ev
// CHECK-NOT: call i8* @llvm.objc.retain
id obj3 = x0p->makeObject2();
id (Test35_Helper::*pmf)() __attribute__((ns_returns_retained))
= &Test35_Helper::makeObject2;
// CHECK: call void @llvm.lifetime.start
// CHECK: call i8* %
// CHECK-NOT: call i8* @llvm.objc.retain
id obj4 = (x0.*pmf)();
// CHECK: call void @llvm.lifetime.start
// CHECK: call i8* %
// CHECK-NOT: call i8* @llvm.objc.retain
id obj5 = (x0p->*pmf)();
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK-NEXT: ret void
}
// CHECK-LABEL: define void @_Z7test35b13Test35_HelperPS_
void test35b(Test35_Helper x0, Test35_Helper *x0p) {
// CHECK: call void @llvm.lifetime.start
// CHECK: call i8* @_ZN13Test35_Helper11makeObject3Ev
// CHECK: call i8* @llvm.objc.retain
id obj1 = Test35_Helper::makeObject3();
// CHECK: call void @llvm.lifetime.start
// CHECK: call i8* @_ZN13Test35_Helper11makeObject4Ev
// CHECK: call i8* @llvm.objc.retain
id obj2 = x0.makeObject4();
// CHECK: call void @llvm.lifetime.start
// CHECK: call i8* @_ZN13Test35_Helper11makeObject4Ev
// CHECK: call i8* @llvm.objc.retain
id obj3 = x0p->makeObject4();
id (Test35_Helper::*pmf)() = &Test35_Helper::makeObject4;
// CHECK: call void @llvm.lifetime.start
// CHECK: call i8* %
// CHECK: call i8* @llvm.objc.retain
id obj4 = (x0.*pmf)();
// CHECK: call void @llvm.lifetime.start
// CHECK: call i8* %
// CHECK: call i8* @llvm.objc.retain
id obj5 = (x0p->*pmf)();
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK: call void @llvm.objc.release
// CHECK: call void @llvm.lifetime.end
// CHECK-NEXT: ret void
}
// rdar://problem/9603128
// CHECK-LABEL: define i8* @_Z6test36P11objc_object(
id test36(id z) {
// CHECK: llvm.objc.retain
// CHECK: llvm.objc.retain
// CHECK: llvm.objc.release
// CHECK: llvm.objc.autoreleaseReturnValue
return z;
}
// Template instantiation side of rdar://problem/9817306
@interface Test37
+ alloc;
- init;
- (NSArray *) array;
@end
template <class T> void test37(T *a) {
for (id x in a.array) {
use(x);
}
}
extern template void test37<Test37>(Test37 *a);
template void test37<Test37>(Test37 *a);
// CHECK-LABEL: define weak_odr void @_Z6test37I6Test37EvPT_(
// CHECK: [[T0:%.*]] = call [[NSARRAY]]* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to [[NSARRAY]]* (i8*, i8*)*)(
// CHECK-NEXT: [[T1:%.*]] = bitcast [[NSARRAY]]* [[T0]] to i8*
// CHECK-NEXT: [[T2:%.*]] = notail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* [[T1]])
// CHECK-NEXT: [[COLL:%.*]] = bitcast i8* [[T2]] to [[NSARRAY]]*
// Make sure it's not immediately released before starting the iteration.
// CHECK-NEXT: load i8*, i8** @OBJC_SELECTOR_REFERENCES_
// CHECK-NEXT: [[T0:%.*]] = bitcast [[NSARRAY]]* [[COLL]] to i8*
// CHECK-NEXT: @objc_msgSend
// This bitcast is for the mutation check.
// CHECK: [[T0:%.*]] = bitcast [[NSARRAY]]* [[COLL]] to i8*
// CHECK-NEXT: @objc_enumerationMutation
// This bitcast is for the 'next' message send.
// CHECK: [[T0:%.*]] = bitcast [[NSARRAY]]* [[COLL]] to i8*
// CHECK-NEXT: @objc_msgSend
// This bitcast is for the final release.
// CHECK: [[T0:%.*]] = bitcast [[NSARRAY]]* [[COLL]] to i8*
// CHECK-NEXT: call void @llvm.objc.release(i8* [[T0]])
template<typename T>
void send_release() {
[Test37 array];
}
// CHECK-LABEL: define weak_odr void @_Z12send_releaseIiEvv(
// CHECK: call %0* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend
// CHECK-NEXT: bitcast
// CHECK-NEXT: call i8* @llvm.objc.retainAutoreleasedReturnValue
// CHECK-NEXT: bitcast
// CHECK-NEXT: bitcast
// CHECK-NEXT: call void @llvm.objc.release
// CHECK-NEXT: ret void
template void send_release<int>();
template<typename T>
Test37 *instantiate_init() {
Test37 *result = [[Test37 alloc] init];
return result;
}
// CHECK-LABEL: define weak_odr %2* @_Z16instantiate_initIiEP6Test37v
// CHECK: call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend
// CHECK: call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend
// CHECK: call i8* @llvm.objc.retain
// CHECK: call void @llvm.objc.release
// CHECK: call i8* @llvm.objc.autoreleaseReturnValue
template Test37* instantiate_init<int>();
// Just make sure that the AST invariants hold properly here,
// i.e. that we don't crash.
// The block should get bound in the full-expression outside
// the statement-expression.
template <class T> class Test38 {
void test(T x) {
^{ (void) x; }, ({ x; });
}
};
// CHECK-LABEL: define weak_odr void @_ZN6Test38IiE4testEi(
template class Test38<int>;
// rdar://problem/11964832
class Test39_base1 {
virtual void foo();
};
class Test39_base2 {
virtual id bar();
};
class Test39 : Test39_base1, Test39_base2 { // base2 is at non-zero offset
virtual id bar();
};
id Test39::bar() { return 0; }
// Note lack of autorelease.
// CHECK-LABEL: define i8* @_ZThn8_N6Test393barEv(
// CHECK: call i8* @_ZN6Test393barEv(
// CHECK-NEXT: ret i8*
// rdar://13617051
// Just a basic sanity-check that IR-gen still works after instantiating
// a non-dependent message send that requires writeback.
@interface Test40
+ (void) foo:(id *)errorPtr;
@end
template <class T> void test40_helper() {
id x;
[Test40 foo: &x];
};
template void test40_helper<int>();
// CHECK-LABEL: define weak_odr void @_Z13test40_helperIiEvv()
// CHECK: [[X:%.*]] = alloca i8*
// CHECK-NEXT: [[TEMP:%.*]] = alloca i8*
// CHECK-NEXT: [[XP:%.*]] = bitcast i8** [[X]] to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[XP]])
// CHECK-NEXT: store i8* null, i8** [[X]]
// CHECK: [[T0:%.*]] = load i8*, i8** [[X]]
// CHECK-NEXT: store i8* [[T0]], i8** [[TEMP]]
// CHECK: @objc_msgSend
// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[TEMP]]
// CHECK-NEXT: call i8* @llvm.objc.retain(i8* [[T0]])
// Check that moves out of __weak variables are compiled to use objc_moveWeak.
void test41(__weak id &&x) {
__weak id y = static_cast<__weak id &&>(x);
}
// CHECK-LABEL: define void @_Z6test41OU6__weakP11objc_object
// CHECK: [[X:%.*]] = alloca i8**
// CHECK: [[Y:%.*]] = alloca i8*
// CHECK: [[T0:%.*]] = load i8**, i8*** [[X]]
// CHECK-NEXT: call void @llvm.objc.moveWeak(i8** [[Y]], i8** [[T0]])
// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** [[Y]])
|