1 ; This file consists of various tests which ensure that the objc-arc-annotations
2 ; are working correctly. In the future, I will use this in other lit tests to
3 ; check the data flow analysis of ARC.
5 ; RUN: opt -S -objc-arc -enable-objc-arc-annotations < %s | FileCheck %s
7 declare i8* @objc_retain(i8*)
8 declare i8* @objc_retainAutoreleasedReturnValue(i8*)
9 declare void @objc_release(i8*)
10 declare i8* @objc_autorelease(i8*)
11 declare i8* @objc_autoreleaseReturnValue(i8*)
12 declare void @objc_autoreleasePoolPop(i8*)
13 declare i8* @objc_autoreleasePoolPush()
14 declare i8* @objc_retainBlock(i8*)
16 declare i8* @objc_retainedObject(i8*)
17 declare i8* @objc_unretainedObject(i8*)
18 declare i8* @objc_unretainedPointer(i8*)
20 declare void @use_pointer(i8*)
21 declare void @callee()
22 declare void @callee_fnptr(void ()*)
23 declare void @invokee()
24 declare i8* @returner()
26 ; Simple retain+release pair deletion, with some intervening control
27 ; flow and harmless instructions.
29 ; CHECK: define void @test0(
31 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None)
32 ; CHECK: %0 = tail call i8* @objc_retain(i8* %a) #0, !llvm.arc.annotation.bottomup !0, !llvm.arc.annotation.topdown !1
33 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Use)
34 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
36 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
37 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use)
38 ; CHECK: store float 2.000000e+00, float* %b, !llvm.arc.annotation.bottomup !2
39 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release)
40 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
42 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
43 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use)
44 ; CHECK: store i32 7, i32* %x, !llvm.arc.annotation.bottomup !2
45 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release)
46 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
48 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
49 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Release)
50 ; CHECK: call void @objc_release(i8* %c) #0, !llvm.arc.annotation.bottomup !3, !llvm.arc.annotation.topdown !4
51 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
53 define void @test0(i32* %x, i1 %p) nounwind {
55 %a = bitcast i32* %x to i8*
56 %0 = call i8* @objc_retain(i8* %a) nounwind
57 br i1 %p, label %t, label %f
61 %b = bitcast i32* %x to float*
62 store float 2.0, float* %b
70 %c = bitcast i32* %x to i8*
71 call void @objc_release(i8* %c) nounwind
75 ; Like test0 but the release isn't always executed when the retain is,
76 ; so the optimization is not safe.
78 ; TODO: Make the objc_release's argument be %0.
80 ; CHECK: define void @test1(
82 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None)
83 ; CHECK: %0 = tail call i8* @objc_retain(i8* %a) #0, !llvm.arc.annotation.bottomup !5, !llvm.arc.annotation.topdown !6
84 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_None)
85 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
87 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
88 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use)
89 ; CHECK: store float 2.000000e+00, float* %b, !llvm.arc.annotation.bottomup !7
90 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release)
91 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
93 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
94 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None)
95 ; CHECK: call void @callee(), !llvm.arc.annotation.topdown !8
96 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_None)
97 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_CanRelease)
99 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_None)
100 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Release)
101 ; CHECK: call void @objc_release(i8* %c) #0, !llvm.arc.annotation.bottomup !9
102 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
104 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_None)
105 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
107 define void @test1(i32* %x, i1 %p, i1 %q) nounwind {
109 %a = bitcast i32* %x to i8*
110 %0 = call i8* @objc_retain(i8* %a) nounwind
111 br i1 %p, label %t, label %f
115 %b = bitcast i32* %x to float*
116 store float 2.0, float* %b
122 br i1 %q, label %return, label %alt_return
125 %c = bitcast i32* %x to i8*
126 call void @objc_release(i8* %c) nounwind
133 ; Don't do partial elimination into two different CFG diamonds.
135 ; CHECK: define void @test1b(
137 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None)
138 ; CHECK: %0 = tail call i8* @objc_retain(i8* %x) #0, !llvm.arc.annotation.bottomup !10, !llvm.arc.annotation.topdown !11
139 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_None)
140 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
142 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
143 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_CanRelease)
144 ; CHECK: tail call void @callee(), !llvm.arc.annotation.bottomup !12, !llvm.arc.annotation.topdown !13
145 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Use)
146 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_CanRelease)
148 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_CanRelease)
149 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use)
150 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Use)
151 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_CanRelease)
153 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_CanRelease)
154 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use)
155 ; CHECK: tail call void @use_pointer(i8* %x), !llvm.arc.annotation.bottomup !14, !llvm.arc.annotation.topdown !15
156 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_MovableRelease)
157 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Use)
159 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_None)
160 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_MovableRelease)
161 ; CHECK: tail call void @objc_release(i8* %x) #0, !clang.imprecise_release !16, !llvm.arc.annotation.bottomup !17
162 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
164 define void @test1b(i8* %x, i1 %p, i1 %q) {
166 tail call i8* @objc_retain(i8* %x) nounwind
167 br i1 %p, label %if.then, label %if.end
169 if.then: ; preds = %entry
170 tail call void @callee()
173 if.end: ; preds = %if.then, %entry
174 br i1 %q, label %if.then3, label %if.end5
176 if.then3: ; preds = %if.end
177 tail call void @use_pointer(i8* %x)
180 if.end5: ; preds = %if.then3, %if.end
181 tail call void @objc_release(i8* %x) nounwind, !clang.imprecise_release !0
185 ; Like test0 but the pointer is passed to an intervening call,
186 ; so the optimization is not safe.
188 ; CHECK: define void @test2(
190 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None)
191 ; CHECK: %e = tail call i8* @objc_retain(i8* %a) #0, !llvm.arc.annotation.bottomup !18, !llvm.arc.annotation.topdown !19
192 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_CanRelease)
193 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
195 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
196 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Use)
197 ; CHECK: store float 2.000000e+00, float* %b, !llvm.arc.annotation.bottomup !20
198 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release)
199 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
201 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
202 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_CanRelease)
203 ; CHECK: call void @use_pointer(i8* %e), !llvm.arc.annotation.bottomup !21, !llvm.arc.annotation.topdown !22
204 ; CHECK: store float 3.000000e+00, float* %d, !llvm.arc.annotation.bottomup !20, !llvm.arc.annotation.topdown !23
205 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release)
206 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Use)
208 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Use)
209 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Release)
210 ; CHECK: call void @objc_release(i8* %c) #0, !llvm.arc.annotation.bottomup !24, !llvm.arc.annotation.topdown !25
211 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
213 define void @test2(i32* %x, i1 %p) nounwind {
215 %a = bitcast i32* %x to i8*
216 %e = call i8* @objc_retain(i8* %a) nounwind
217 br i1 %p, label %t, label %f
221 %b = bitcast i32* %x to float*
222 store float 2.0, float* %b
227 call void @use_pointer(i8* %e)
228 %d = bitcast i32* %x to float*
229 store float 3.0, float* %d
233 %c = bitcast i32* %x to i8*
234 call void @objc_release(i8* %c) nounwind
238 ; Like test0 but the release is in a loop,
239 ; so the optimization is not safe.
241 ; TODO: For now, assume this can't happen.
243 ; CHECK: define void @test3(
245 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_None)
246 ; CHECK: tail call i8* @objc_retain(i8* %a) #0, !llvm.arc.annotation.bottomup !26, !llvm.arc.annotation.topdown !27
247 ; CHECK: call void @llvm.arc.annotation.bottomup.bbend(i8** @x, i8** @S_Release)
248 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_Retain)
250 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_Retain)
251 ; CHECK: call void @llvm.arc.annotation.bottomup.bbstart(i8** @x, i8** @S_Release)
252 ; CHECK: call void @objc_release(i8* %c) #0, !llvm.arc.annotation.bottomup !28, !llvm.arc.annotation.topdown !29
253 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
255 ; CHECK: call void @llvm.arc.annotation.topdown.bbstart(i8** @x, i8** @S_None)
256 ; CHECK: call void @llvm.arc.annotation.topdown.bbend(i8** @x, i8** @S_None)
258 define void @test3(i32* %x, i1* %q) nounwind {
260 %a = bitcast i32* %x to i8*
261 %0 = call i8* @objc_retain(i8* %a) nounwind
265 %c = bitcast i32* %x to i8*
266 call void @objc_release(i8* %c) nounwind
267 %j = load volatile i1* %q
268 br i1 %j, label %loop, label %return
276 ; CHECK: !0 = metadata !{metadata !"(test0,%x)", metadata !"S_Use", metadata !"S_None"}
277 ; CHECK: !1 = metadata !{metadata !"(test0,%x)", metadata !"S_None", metadata !"S_Retain"}
278 ; CHECK: !2 = metadata !{metadata !"(test0,%x)", metadata !"S_Release", metadata !"S_Use"}
279 ; CHECK: !3 = metadata !{metadata !"(test0,%x)", metadata !"S_None", metadata !"S_Release"}
280 ; CHECK: !4 = metadata !{metadata !"(test0,%x)", metadata !"S_Retain", metadata !"S_None"}
281 ; CHECK: !5 = metadata !{metadata !"(test1,%x)", metadata !"S_None", metadata !"S_None"}
282 ; CHECK: !6 = metadata !{metadata !"(test1,%x)", metadata !"S_None", metadata !"S_Retain"}
283 ; CHECK: !7 = metadata !{metadata !"(test1,%x)", metadata !"S_Release", metadata !"S_Use"}
284 ; CHECK: !8 = metadata !{metadata !"(test1,%x)", metadata !"S_Retain", metadata !"S_CanRelease"}
285 ; CHECK: !9 = metadata !{metadata !"(test1,%x)", metadata !"S_None", metadata !"S_Release"}
286 ; CHECK: !10 = metadata !{metadata !"(test1b,%x)", metadata !"S_None", metadata !"S_None"}
287 ; CHECK: !11 = metadata !{metadata !"(test1b,%x)", metadata !"S_None", metadata !"S_Retain"}
288 ; CHECK: !12 = metadata !{metadata !"(test1b,%x)", metadata !"S_Use", metadata !"S_CanRelease"}
289 ; CHECK: !13 = metadata !{metadata !"(test1b,%x)", metadata !"S_Retain", metadata !"S_CanRelease"}
290 ; CHECK: !14 = metadata !{metadata !"(test1b,%x)", metadata !"S_MovableRelease", metadata !"S_Use"}
291 ; CHECK: !15 = metadata !{metadata !"(test1b,%x)", metadata !"S_CanRelease", metadata !"S_Use"}
292 ; CHECK: !16 = metadata !{}
293 ; CHECK: !17 = metadata !{metadata !"(test1b,%x)", metadata !"S_None", metadata !"S_MovableRelease"}
294 ; CHECK: !18 = metadata !{metadata !"(test2,%x)", metadata !"S_CanRelease", metadata !"S_None"}
295 ; CHECK: !19 = metadata !{metadata !"(test2,%x)", metadata !"S_None", metadata !"S_Retain"}
296 ; CHECK: !20 = metadata !{metadata !"(test2,%x)", metadata !"S_Release", metadata !"S_Use"}
297 ; CHECK: !21 = metadata !{metadata !"(test2,%x)", metadata !"S_Use", metadata !"S_CanRelease"}
298 ; CHECK: !22 = metadata !{metadata !"(test2,%x)", metadata !"S_Retain", metadata !"S_CanRelease"}
299 ; CHECK: !23 = metadata !{metadata !"(test2,%x)", metadata !"S_CanRelease", metadata !"S_Use"}
300 ; CHECK: !24 = metadata !{metadata !"(test2,%x)", metadata !"S_None", metadata !"S_Release"}
301 ; CHECK: !25 = metadata !{metadata !"(test2,%x)", metadata !"S_Use", metadata !"S_None"}
302 ; CHECK: !26 = metadata !{metadata !"(test3,%x)", metadata !"S_Release", metadata !"S_None"}
303 ; CHECK: !27 = metadata !{metadata !"(test3,%x)", metadata !"S_None", metadata !"S_Retain"}
304 ; CHECK: !28 = metadata !{metadata !"(test3,%x)", metadata !"S_None", metadata !"S_Release"}
305 ; CHECK: !29 = metadata !{metadata !"(test3,%x)", metadata !"S_Retain", metadata !"S_None"}