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
|
; This file consists of various tests which ensure that the objc-arc-annotations
; are working correctly. In the future, I will use this in other lit tests to
; check the data flow analysis of ARC.
; REQUIRES: asserts
; RUN: opt -S -objc-arc -enable-objc-arc-annotations < %s | FileCheck %s
declare i8* @objc_retain(i8*)
declare i8* @objc_retainAutoreleasedReturnValue(i8*)
declare void @objc_release(i8*)
declare i8* @objc_autorelease(i8*)
declare i8* @objc_autoreleaseReturnValue(i8*)
declare void @objc_autoreleasePoolPop(i8*)
declare i8* @objc_autoreleasePoolPush()
declare i8* @objc_retainBlock(i8*)
declare i8* @objc_retainedObject(i8*)
declare i8* @objc_unretainedObject(i8*)
declare i8* @objc_unretainedPointer(i8*)
declare void @use_pointer(i8*)
declare void @callee()
declare void @callee_fnptr(void ()*)
declare void @invokee()
declare i8* @returner()
; Simple retain+release pair deletion, with some intervening control
; flow and harmless instructions.
; CHECK: define void @test0(
; CHECK: entry:
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None)
; CHECK: %0 = tail call i8* @objc_retain(i8* %a) #0, !llvm.arc.annotation.bottomup !0, !llvm.arc.annotation.topdown !1
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Use)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
; CHECK: t:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use)
; CHECK: store float 2.000000e+00, float* %b, !llvm.arc.annotation.bottomup !2
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
; CHECK: f:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use)
; CHECK: store i32 7, i32* %x, !llvm.arc.annotation.bottomup !2
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
; CHECK: return:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Release)
; CHECK: call void @objc_release(i8* %c) #0, !llvm.arc.annotation.bottomup !3, !llvm.arc.annotation.topdown !4
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
; CHECK: }
define void @test0(i32* %x, i1 %p) nounwind {
entry:
%a = bitcast i32* %x to i8*
%0 = call i8* @objc_retain(i8* %a) nounwind
br i1 %p, label %t, label %f
t:
store i8 3, i8* %a
%b = bitcast i32* %x to float*
store float 2.0, float* %b
br label %return
f:
store i32 7, i32* %x
br label %return
return:
%c = bitcast i32* %x to i8*
call void @objc_release(i8* %c) nounwind
ret void
}
; Like test0 but the release isn't always executed when the retain is,
; so the optimization is not safe.
; TODO: Make the objc_release's argument be %0.
; CHECK: define void @test1(
; CHECK: entry:
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None)
; CHECK: %0 = tail call i8* @objc_retain(i8* %a) #0, !llvm.arc.annotation.bottomup !5, !llvm.arc.annotation.topdown !6
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_None)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
; CHECK: t:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use)
; CHECK: store float 2.000000e+00, float* %b, !llvm.arc.annotation.bottomup !7
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
; CHECK: f:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None)
; CHECK: call void @callee(), !llvm.arc.annotation.topdown !8
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_None)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_CanRelease)
; CHECK: return:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_None)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Release)
; CHECK: call void @objc_release(i8* %c) #0, !llvm.arc.annotation.bottomup !9
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
; CHECK: alt_return:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_None)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
; CHECK: }
define void @test1(i32* %x, i1 %p, i1 %q) nounwind {
entry:
%a = bitcast i32* %x to i8*
%0 = call i8* @objc_retain(i8* %a) nounwind
br i1 %p, label %t, label %f
t:
store i8 3, i8* %a
%b = bitcast i32* %x to float*
store float 2.0, float* %b
br label %return
f:
store i32 7, i32* %x
call void @callee()
br i1 %q, label %return, label %alt_return
return:
%c = bitcast i32* %x to i8*
call void @objc_release(i8* %c) nounwind
ret void
alt_return:
ret void
}
; Don't do partial elimination into two different CFG diamonds.
; CHECK: define void @test1b(
; CHECK: entry:
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None)
; CHECK: %0 = tail call i8* @objc_retain(i8* %x) #0, !llvm.arc.annotation.bottomup !10, !llvm.arc.annotation.topdown !11
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_None)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
; CHECK: if.then:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_CanRelease)
; CHECK: tail call void @callee(), !llvm.arc.annotation.bottomup !12, !llvm.arc.annotation.topdown !13
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Use)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_CanRelease)
; CHECK: if.end:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_CanRelease)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use)
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Use)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_CanRelease)
; CHECK: if.then3:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_CanRelease)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use)
; CHECK: tail call void @use_pointer(i8* %x), !llvm.arc.annotation.bottomup !14, !llvm.arc.annotation.topdown !15
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_MovableRelease)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Use)
; CHECK: if.end5:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_None)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_MovableRelease)
; CHECK: tail call void @objc_release(i8* %x) #0, !clang.imprecise_release !16, !llvm.arc.annotation.bottomup !17
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
; CHECK: }
define void @test1b(i8* %x, i1 %p, i1 %q) {
entry:
tail call i8* @objc_retain(i8* %x) nounwind
br i1 %p, label %if.then, label %if.end
if.then: ; preds = %entry
tail call void @callee()
br label %if.end
if.end: ; preds = %if.then, %entry
br i1 %q, label %if.then3, label %if.end5
if.then3: ; preds = %if.end
tail call void @use_pointer(i8* %x)
br label %if.end5
if.end5: ; preds = %if.then3, %if.end
tail call void @objc_release(i8* %x) nounwind, !clang.imprecise_release !0
ret void
}
; Like test0 but the pointer is passed to an intervening call,
; so the optimization is not safe.
; CHECK: define void @test2(
; CHECK: entry:
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None)
; CHECK: %e = tail call i8* @objc_retain(i8* %a) #0, !llvm.arc.annotation.bottomup !18, !llvm.arc.annotation.topdown !19
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_CanRelease)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
; CHECK: t:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use)
; CHECK: store float 2.000000e+00, float* %b, !llvm.arc.annotation.bottomup !20
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
; CHECK: f:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_CanRelease)
; CHECK: call void @use_pointer(i8* %e), !llvm.arc.annotation.bottomup !21, !llvm.arc.annotation.topdown !22
; CHECK: store float 3.000000e+00, float* %d, !llvm.arc.annotation.bottomup !20, !llvm.arc.annotation.topdown !23
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Use)
; CHECK: return:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Use)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Release)
; CHECK: call void @objc_release(i8* %c) #0, !llvm.arc.annotation.bottomup !24, !llvm.arc.annotation.topdown !25
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
; CHECK: }
define void @test2(i32* %x, i1 %p) nounwind {
entry:
%a = bitcast i32* %x to i8*
%e = call i8* @objc_retain(i8* %a) nounwind
br i1 %p, label %t, label %f
t:
store i8 3, i8* %a
%b = bitcast i32* %x to float*
store float 2.0, float* %b
br label %return
f:
store i32 7, i32* %x
call void @use_pointer(i8* %e)
%d = bitcast i32* %x to float*
store float 3.0, float* %d
br label %return
return:
%c = bitcast i32* %x to i8*
call void @objc_release(i8* %c) nounwind
ret void
}
; Like test0 but the release is in a loop,
; so the optimization is not safe.
; TODO: For now, assume this can't happen.
; CHECK: define void @test3(
; CHECK: entry:
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None)
; CHECK: tail call i8* @objc_retain(i8* %a) #0, !llvm.arc.annotation.bottomup !26, !llvm.arc.annotation.topdown !27
; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
; CHECK: loop:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Release)
; CHECK: call void @objc_release(i8* %c) #0, !llvm.arc.annotation.bottomup !28, !llvm.arc.annotation.topdown !29
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
; CHECK: return:
; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_None)
; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
; CHECK: }
define void @test3(i32* %x, i1* %q) nounwind {
entry:
%a = bitcast i32* %x to i8*
%0 = call i8* @objc_retain(i8* %a) nounwind
br label %loop
loop:
%c = bitcast i32* %x to i8*
call void @objc_release(i8* %c) nounwind
%j = load volatile i1* %q
br i1 %j, label %loop, label %return
return:
ret void
}
!0 = metadata !{}
; CHECK: !0 = metadata !{metadata !"(test0,%x)", metadata !"S_Use", metadata !"S_None"}
; CHECK: !1 = metadata !{metadata !"(test0,%x)", metadata !"S_None", metadata !"S_Retain"}
; CHECK: !2 = metadata !{metadata !"(test0,%x)", metadata !"S_Release", metadata !"S_Use"}
; CHECK: !3 = metadata !{metadata !"(test0,%x)", metadata !"S_None", metadata !"S_Release"}
; CHECK: !4 = metadata !{metadata !"(test0,%x)", metadata !"S_Retain", metadata !"S_None"}
; CHECK: !5 = metadata !{metadata !"(test1,%x)", metadata !"S_None", metadata !"S_None"}
; CHECK: !6 = metadata !{metadata !"(test1,%x)", metadata !"S_None", metadata !"S_Retain"}
; CHECK: !7 = metadata !{metadata !"(test1,%x)", metadata !"S_Release", metadata !"S_Use"}
; CHECK: !8 = metadata !{metadata !"(test1,%x)", metadata !"S_Retain", metadata !"S_CanRelease"}
; CHECK: !9 = metadata !{metadata !"(test1,%x)", metadata !"S_None", metadata !"S_Release"}
; CHECK: !10 = metadata !{metadata !"(test1b,%x)", metadata !"S_None", metadata !"S_None"}
; CHECK: !11 = metadata !{metadata !"(test1b,%x)", metadata !"S_None", metadata !"S_Retain"}
; CHECK: !12 = metadata !{metadata !"(test1b,%x)", metadata !"S_Use", metadata !"S_CanRelease"}
; CHECK: !13 = metadata !{metadata !"(test1b,%x)", metadata !"S_Retain", metadata !"S_CanRelease"}
; CHECK: !14 = metadata !{metadata !"(test1b,%x)", metadata !"S_MovableRelease", metadata !"S_Use"}
; CHECK: !15 = metadata !{metadata !"(test1b,%x)", metadata !"S_CanRelease", metadata !"S_Use"}
; CHECK: !16 = metadata !{}
; CHECK: !17 = metadata !{metadata !"(test1b,%x)", metadata !"S_None", metadata !"S_MovableRelease"}
; CHECK: !18 = metadata !{metadata !"(test2,%x)", metadata !"S_CanRelease", metadata !"S_None"}
; CHECK: !19 = metadata !{metadata !"(test2,%x)", metadata !"S_None", metadata !"S_Retain"}
; CHECK: !20 = metadata !{metadata !"(test2,%x)", metadata !"S_Release", metadata !"S_Use"}
; CHECK: !21 = metadata !{metadata !"(test2,%x)", metadata !"S_Use", metadata !"S_CanRelease"}
; CHECK: !22 = metadata !{metadata !"(test2,%x)", metadata !"S_Retain", metadata !"S_CanRelease"}
; CHECK: !23 = metadata !{metadata !"(test2,%x)", metadata !"S_CanRelease", metadata !"S_Use"}
; CHECK: !24 = metadata !{metadata !"(test2,%x)", metadata !"S_None", metadata !"S_Release"}
; CHECK: !25 = metadata !{metadata !"(test2,%x)", metadata !"S_Use", metadata !"S_None"}
; CHECK: !26 = metadata !{metadata !"(test3,%x)", metadata !"S_Release", metadata !"S_None"}
; CHECK: !27 = metadata !{metadata !"(test3,%x)", metadata !"S_None", metadata !"S_Retain"}
; CHECK: !28 = metadata !{metadata !"(test3,%x)", metadata !"S_None", metadata !"S_Release"}
; CHECK: !29 = metadata !{metadata !"(test3,%x)", metadata !"S_Retain", metadata !"S_None"}
|
