• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1; RUN: opt -loop-reduce -disable-output -debug-only=loop-reduce < %s 2> %t
2; RUN: FileCheck %s < %t
3; REQUIRES: asserts
4;
5; PR13361: LSR + SCEV "hangs" on reasonably sized test with sequence of loops
6;
7; Without limits on CollectSubexpr, we have thousands of formulae for
8; the use that crosses loops. With limits we have five.
9; CHECK: LSR on loop %bb221:
10; CHECK: After generating reuse formulae:
11; CHECK: LSR is examining the following uses:
12; CHECK: LSR Use: Kind=Special
13; CHECK: {{.*reg\(\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{}}
14; CHECK: {{.*reg\(\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{}}
15; CHECK: {{.*reg\(\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{}}
16; CHECK: {{.*reg\(\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{}}
17; CHECK: {{.*reg\(\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{.*\{}}
18; CHECK-NOT:reg
19; CHECK: Filtering for use
20
21%struct.snork = type { %struct.fuga, i32, i32, i32, i32, i32, i32 }
22%struct.fuga = type { %struct.gork, i64 }
23%struct.gork = type { i8*, i32, i32, %struct.noot* }
24%struct.noot = type opaque
25%struct.jim = type { [5120 x i8], i32, i32, [2048 x i8], i32, [256 x i8] }
26
27@global = external global %struct.snork, align 8
28@global1 = external hidden unnamed_addr constant [52 x i8], align 1
29@global2 = external hidden unnamed_addr constant [18 x i8], align 1
30@global3 = external hidden global %struct.jim, align 32
31@global4 = external hidden unnamed_addr constant [40 x i8], align 1
32
33declare void @snork(...) nounwind
34
35declare fastcc void @blarg() nounwind uwtable readonly
36
37define hidden fastcc void @boogle() nounwind uwtable {
38bb:
39  %tmp = trunc i64 0 to i32
40  %tmp1 = icmp slt i32 %tmp, 2047
41  %tmp2 = add i32 0, -1
42  %tmp3 = icmp ult i32 %tmp2, 255
43  %tmp4 = and i1 %tmp1, %tmp3
44  br i1 %tmp4, label %bb6, label %bb5
45
46bb5:                                              ; preds = %bb
47  tail call void (...)* @snork(i8* getelementptr inbounds ([52 x i8]* @global1, i64 0, i64 0), i32 2021) nounwind
48  tail call void (...)* @snork(i8* getelementptr inbounds (%struct.jim* @global3, i64 0, i32 3, i64 1), i32 -2146631418) nounwind
49  unreachable
50
51bb6:                                              ; preds = %bb
52  tail call void @zot(i8* getelementptr inbounds (%struct.jim* @global3, i64 0, i32 5, i64 0), i8* getelementptr inbounds (%struct.jim* @global3, i64 0, i32 3, i64 1), i64 undef, i32 1, i1 false) nounwind
53  %tmp7 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 5, i64 undef
54  store i8 0, i8* %tmp7, align 1
55  %tmp8 = add nsw i32 0, 1
56  %tmp9 = sext i32 %tmp8 to i64
57  %tmp10 = add i64 %tmp9, 1
58  %tmp11 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 3, i64 %tmp10
59  %tmp12 = sub i64 2047, %tmp9
60  %tmp13 = icmp eq i32 undef, 1
61  br i1 %tmp13, label %bb14, label %bb15
62
63bb14:                                             ; preds = %bb6
64  tail call fastcc void @blarg()
65  unreachable
66
67bb15:                                             ; preds = %bb6
68  %tmp16 = trunc i64 %tmp12 to i32
69  br label %bb17
70
71bb17:                                             ; preds = %bb26, %bb15
72  %tmp18 = phi i64 [ %tmp28, %bb26 ], [ 0, %bb15 ]
73  %tmp19 = phi i32 [ %tmp29, %bb26 ], [ 0, %bb15 ]
74  %tmp20 = trunc i64 %tmp18 to i32
75  %tmp21 = icmp slt i32 %tmp20, %tmp16
76  br i1 %tmp21, label %bb22, label %bb32
77
78bb22:                                             ; preds = %bb17
79  %tmp23 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 3, i64 0
80  %tmp24 = load i8* %tmp23, align 1
81  %tmp25 = icmp eq i8 %tmp24, 58
82  br i1 %tmp25, label %bb30, label %bb26
83
84bb26:                                             ; preds = %bb22
85  %tmp27 = icmp eq i8 %tmp24, 0
86  %tmp28 = add i64 %tmp18, 1
87  %tmp29 = add nsw i32 %tmp19, 1
88  br i1 %tmp27, label %bb32, label %bb17
89
90bb30:                                             ; preds = %bb22
91  %tmp31 = icmp ult i32 undef, 255
92  br i1 %tmp31, label %bb33, label %bb32
93
94bb32:                                             ; preds = %bb30, %bb26, %bb17
95  tail call void (...)* @snork(i8* getelementptr inbounds ([52 x i8]* @global1, i64 0, i64 0), i32 2038) nounwind
96  tail call void (...)* @snork(i8* %tmp11, i32 -2146631418) nounwind
97  unreachable
98
99bb33:                                             ; preds = %bb30
100  tail call void @zot(i8* getelementptr inbounds (%struct.jim* @global3, i64 0, i32 5, i64 0), i8* %tmp11, i64 undef, i32 1, i1 false) nounwind
101  %tmp34 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 5, i64 undef
102  store i8 0, i8* %tmp34, align 1
103  %tmp35 = add nsw i32 %tmp19, 1
104  %tmp36 = sext i32 %tmp35 to i64
105  %tmp37 = add i64 %tmp36, %tmp10
106  %tmp38 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 3, i64 %tmp37
107  %tmp39 = sub i64 %tmp12, %tmp36
108  br i1 false, label %bb40, label %bb41
109
110bb40:                                             ; preds = %bb33
111  br label %bb41
112
113bb41:                                             ; preds = %bb40, %bb33
114  %tmp42 = trunc i64 %tmp39 to i32
115  br label %bb43
116
117bb43:                                             ; preds = %bb52, %bb41
118  %tmp44 = phi i64 [ %tmp53, %bb52 ], [ 0, %bb41 ]
119  %tmp45 = phi i32 [ %tmp54, %bb52 ], [ 0, %bb41 ]
120  %tmp46 = trunc i64 %tmp44 to i32
121  %tmp47 = icmp slt i32 %tmp46, %tmp42
122  br i1 %tmp47, label %bb48, label %bb58
123
124bb48:                                             ; preds = %bb43
125  %tmp49 = add i64 %tmp44, %tmp37
126  %tmp50 = load i8* undef, align 1
127  %tmp51 = icmp eq i8 %tmp50, 58
128  br i1 %tmp51, label %bb55, label %bb52
129
130bb52:                                             ; preds = %bb48
131  %tmp53 = add i64 %tmp44, 1
132  %tmp54 = add nsw i32 %tmp45, 1
133  br i1 undef, label %bb58, label %bb43
134
135bb55:                                             ; preds = %bb48
136  %tmp56 = add i32 %tmp45, -1
137  %tmp57 = icmp ult i32 %tmp56, 255
138  br i1 %tmp57, label %bb59, label %bb58
139
140bb58:                                             ; preds = %bb55, %bb52, %bb43
141  tail call void (...)* @snork(i8* getelementptr inbounds ([52 x i8]* @global1, i64 0, i64 0), i32 2055) nounwind
142  tail call void (...)* @snork(i8* %tmp38, i32 -2146631418) nounwind
143  br label %bb247
144
145bb59:                                             ; preds = %bb55
146  %tmp60 = sext i32 %tmp45 to i64
147  tail call void @zot(i8* getelementptr inbounds (%struct.jim* @global3, i64 0, i32 5, i64 0), i8* %tmp38, i64 %tmp60, i32 1, i1 false) nounwind
148  %tmp61 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 5, i64 %tmp60
149  store i8 0, i8* %tmp61, align 1
150  %tmp62 = add nsw i32 %tmp45, 1
151  %tmp63 = sext i32 %tmp62 to i64
152  %tmp64 = add i64 %tmp63, %tmp37
153  %tmp65 = sub i64 %tmp39, %tmp63
154  %tmp66 = icmp eq i32 undef, 2
155  br i1 %tmp66, label %bb67, label %bb68
156
157bb67:                                             ; preds = %bb59
158  tail call fastcc void @blarg()
159  unreachable
160
161bb68:                                             ; preds = %bb59
162  switch i32 undef, label %bb71 [
163    i32 0, label %bb74
164    i32 -1, label %bb69
165  ]
166
167bb69:                                             ; preds = %bb68
168  tail call void (...)* @snork(i8* getelementptr inbounds ([52 x i8]* @global1, i64 0, i64 0), i32 2071) nounwind
169  %tmp70 = load i32* getelementptr inbounds (%struct.snork* @global, i64 0, i32 2), align 4
170  unreachable
171
172bb71:                                             ; preds = %bb68
173  %tmp72 = load i32* getelementptr inbounds (%struct.snork* @global, i64 0, i32 4), align 4
174  %tmp73 = icmp eq i32 undef, 0
175  br i1 %tmp73, label %bb247, label %bb74
176
177bb74:                                             ; preds = %bb71, %bb68
178  %tmp75 = trunc i64 %tmp65 to i32
179  br label %bb76
180
181bb76:                                             ; preds = %bb82, %bb74
182  %tmp77 = phi i64 [ %tmp84, %bb82 ], [ 0, %bb74 ]
183  %tmp78 = phi i32 [ %tmp85, %bb82 ], [ 0, %bb74 ]
184  %tmp79 = trunc i64 %tmp77 to i32
185  %tmp80 = icmp slt i32 %tmp79, %tmp75
186  br i1 %tmp80, label %bb81, label %bb87
187
188bb81:                                             ; preds = %bb76
189  br i1 false, label %bb86, label %bb82
190
191bb82:                                             ; preds = %bb81
192  %tmp83 = icmp eq i8 0, 0
193  %tmp84 = add i64 %tmp77, 1
194  %tmp85 = add nsw i32 %tmp78, 1
195  br i1 %tmp83, label %bb87, label %bb76
196
197bb86:                                             ; preds = %bb81
198  br i1 undef, label %bb88, label %bb87
199
200bb87:                                             ; preds = %bb86, %bb82, %bb76
201  unreachable
202
203bb88:                                             ; preds = %bb86
204  %tmp89 = add nsw i32 %tmp78, 1
205  %tmp90 = sext i32 %tmp89 to i64
206  %tmp91 = add i64 %tmp90, %tmp64
207  %tmp92 = sub i64 %tmp65, %tmp90
208  br i1 false, label %bb93, label %bb94
209
210bb93:                                             ; preds = %bb88
211  unreachable
212
213bb94:                                             ; preds = %bb88
214  %tmp95 = trunc i64 %tmp92 to i32
215  br label %bb96
216
217bb96:                                             ; preds = %bb102, %bb94
218  %tmp97 = phi i64 [ %tmp103, %bb102 ], [ 0, %bb94 ]
219  %tmp98 = phi i32 [ %tmp104, %bb102 ], [ 0, %bb94 ]
220  %tmp99 = trunc i64 %tmp97 to i32
221  %tmp100 = icmp slt i32 %tmp99, %tmp95
222  br i1 %tmp100, label %bb101, label %bb106
223
224bb101:                                            ; preds = %bb96
225  br i1 undef, label %bb105, label %bb102
226
227bb102:                                            ; preds = %bb101
228  %tmp103 = add i64 %tmp97, 1
229  %tmp104 = add nsw i32 %tmp98, 1
230  br i1 false, label %bb106, label %bb96
231
232bb105:                                            ; preds = %bb101
233  br i1 undef, label %bb107, label %bb106
234
235bb106:                                            ; preds = %bb105, %bb102, %bb96
236  br label %bb247
237
238bb107:                                            ; preds = %bb105
239  %tmp108 = add nsw i32 %tmp98, 1
240  %tmp109 = sext i32 %tmp108 to i64
241  %tmp110 = add i64 %tmp109, %tmp91
242  %tmp111 = sub i64 %tmp92, %tmp109
243  br i1 false, label %bb112, label %bb113
244
245bb112:                                            ; preds = %bb107
246  unreachable
247
248bb113:                                            ; preds = %bb107
249  %tmp114 = trunc i64 %tmp111 to i32
250  br label %bb115
251
252bb115:                                            ; preds = %bb121, %bb113
253  %tmp116 = phi i64 [ %tmp122, %bb121 ], [ 0, %bb113 ]
254  %tmp117 = phi i32 [ %tmp123, %bb121 ], [ 0, %bb113 ]
255  %tmp118 = trunc i64 %tmp116 to i32
256  %tmp119 = icmp slt i32 %tmp118, %tmp114
257  br i1 %tmp119, label %bb120, label %bb125
258
259bb120:                                            ; preds = %bb115
260  br i1 undef, label %bb124, label %bb121
261
262bb121:                                            ; preds = %bb120
263  %tmp122 = add i64 %tmp116, 1
264  %tmp123 = add nsw i32 %tmp117, 1
265  br i1 false, label %bb125, label %bb115
266
267bb124:                                            ; preds = %bb120
268  br i1 false, label %bb126, label %bb125
269
270bb125:                                            ; preds = %bb124, %bb121, %bb115
271  unreachable
272
273bb126:                                            ; preds = %bb124
274  %tmp127 = add nsw i32 %tmp117, 1
275  %tmp128 = sext i32 %tmp127 to i64
276  %tmp129 = add i64 %tmp128, %tmp110
277  %tmp130 = sub i64 %tmp111, %tmp128
278  tail call fastcc void @blarg()
279  br i1 false, label %bb132, label %bb131
280
281bb131:                                            ; preds = %bb126
282  unreachable
283
284bb132:                                            ; preds = %bb126
285  %tmp133 = trunc i64 %tmp130 to i32
286  br label %bb134
287
288bb134:                                            ; preds = %bb140, %bb132
289  %tmp135 = phi i64 [ %tmp141, %bb140 ], [ 0, %bb132 ]
290  %tmp136 = phi i32 [ %tmp142, %bb140 ], [ 0, %bb132 ]
291  %tmp137 = trunc i64 %tmp135 to i32
292  %tmp138 = icmp slt i32 %tmp137, %tmp133
293  br i1 %tmp138, label %bb139, label %bb144
294
295bb139:                                            ; preds = %bb134
296  br i1 false, label %bb143, label %bb140
297
298bb140:                                            ; preds = %bb139
299  %tmp141 = add i64 %tmp135, 1
300  %tmp142 = add nsw i32 %tmp136, 1
301  br i1 false, label %bb144, label %bb134
302
303bb143:                                            ; preds = %bb139
304  br i1 false, label %bb145, label %bb144
305
306bb144:                                            ; preds = %bb143, %bb140, %bb134
307  br label %bb247
308
309bb145:                                            ; preds = %bb143
310  %tmp146 = add nsw i32 %tmp136, 1
311  %tmp147 = sext i32 %tmp146 to i64
312  %tmp148 = add i64 %tmp147, %tmp129
313  %tmp149 = sub i64 %tmp130, %tmp147
314  switch i32 0, label %bb152 [
315    i32 0, label %bb150
316    i32 16, label %bb150
317    i32 32, label %bb150
318    i32 48, label %bb150
319    i32 64, label %bb150
320    i32 256, label %bb150
321    i32 4096, label %bb150
322  ]
323
324bb150:                                            ; preds = %bb145, %bb145, %bb145, %bb145, %bb145, %bb145, %bb145
325  %tmp151 = trunc i64 %tmp149 to i32
326  br label %bb153
327
328bb152:                                            ; preds = %bb145
329  unreachable
330
331bb153:                                            ; preds = %bb160, %bb150
332  %tmp154 = phi i64 [ %tmp161, %bb160 ], [ 0, %bb150 ]
333  %tmp155 = phi i32 [ %tmp162, %bb160 ], [ 0, %bb150 ]
334  %tmp156 = trunc i64 %tmp154 to i32
335  %tmp157 = icmp slt i32 %tmp156, %tmp151
336  br i1 %tmp157, label %bb158, label %bb166
337
338bb158:                                            ; preds = %bb153
339  %tmp159 = add i64 %tmp154, %tmp148
340  br i1 false, label %bb163, label %bb160
341
342bb160:                                            ; preds = %bb158
343  %tmp161 = add i64 %tmp154, 1
344  %tmp162 = add nsw i32 %tmp155, 1
345  br i1 false, label %bb166, label %bb153
346
347bb163:                                            ; preds = %bb158
348  %tmp164 = add i32 %tmp155, -1
349  %tmp165 = icmp ult i32 %tmp164, 255
350  br i1 %tmp165, label %bb167, label %bb166
351
352bb166:                                            ; preds = %bb163, %bb160, %bb153
353  unreachable
354
355bb167:                                            ; preds = %bb163
356  %tmp168 = add nsw i32 %tmp155, 1
357  %tmp169 = sext i32 %tmp168 to i64
358  %tmp170 = add i64 %tmp169, %tmp148
359  %tmp171 = sub i64 %tmp149, %tmp169
360  br i1 false, label %bb173, label %bb172
361
362bb172:                                            ; preds = %bb167
363  unreachable
364
365bb173:                                            ; preds = %bb167
366  %tmp174 = trunc i64 %tmp171 to i32
367  br label %bb175
368
369bb175:                                            ; preds = %bb181, %bb173
370  %tmp176 = phi i64 [ %tmp183, %bb181 ], [ 0, %bb173 ]
371  %tmp177 = phi i32 [ %tmp184, %bb181 ], [ 0, %bb173 ]
372  %tmp178 = trunc i64 %tmp176 to i32
373  %tmp179 = icmp slt i32 %tmp178, %tmp174
374  br i1 %tmp179, label %bb180, label %bb186
375
376bb180:                                            ; preds = %bb175
377  br i1 false, label %bb185, label %bb181
378
379bb181:                                            ; preds = %bb180
380  %tmp182 = icmp eq i8 0, 0
381  %tmp183 = add i64 %tmp176, 1
382  %tmp184 = add nsw i32 %tmp177, 1
383  br i1 %tmp182, label %bb186, label %bb175
384
385bb185:                                            ; preds = %bb180
386  br i1 false, label %bb187, label %bb186
387
388bb186:                                            ; preds = %bb185, %bb181, %bb175
389  unreachable
390
391bb187:                                            ; preds = %bb185
392  %tmp188 = add nsw i32 %tmp177, 1
393  %tmp189 = sext i32 %tmp188 to i64
394  %tmp190 = sub i64 %tmp171, %tmp189
395  br i1 false, label %bb192, label %bb191
396
397bb191:                                            ; preds = %bb187
398  unreachable
399
400bb192:                                            ; preds = %bb187
401  %tmp193 = trunc i64 %tmp190 to i32
402  br label %bb194
403
404bb194:                                            ; preds = %bb200, %bb192
405  %tmp195 = phi i64 [ %tmp201, %bb200 ], [ 0, %bb192 ]
406  %tmp196 = phi i32 [ %tmp202, %bb200 ], [ 0, %bb192 ]
407  %tmp197 = trunc i64 %tmp195 to i32
408  %tmp198 = icmp slt i32 %tmp197, %tmp193
409  br i1 %tmp198, label %bb199, label %bb204
410
411bb199:                                            ; preds = %bb194
412  br i1 false, label %bb203, label %bb200
413
414bb200:                                            ; preds = %bb199
415  %tmp201 = add i64 %tmp195, 1
416  %tmp202 = add nsw i32 %tmp196, 1
417  br i1 false, label %bb204, label %bb194
418
419bb203:                                            ; preds = %bb199
420  br i1 undef, label %bb205, label %bb204
421
422bb204:                                            ; preds = %bb203, %bb200, %bb194
423  unreachable
424
425bb205:                                            ; preds = %bb203
426  %tmp206 = add nsw i32 %tmp196, 1
427  %tmp207 = sext i32 %tmp206 to i64
428  %tmp208 = add i64 %tmp207, 0
429  %tmp209 = sub i64 %tmp190, %tmp207
430  br i1 %tmp13, label %bb210, label %bb211
431
432bb210:                                            ; preds = %bb205
433  unreachable
434
435bb211:                                            ; preds = %bb205
436  %tmp212 = trunc i64 %tmp209 to i32
437  %tmp213 = icmp slt i32 0, %tmp212
438  br i1 false, label %bb215, label %bb214
439
440bb214:                                            ; preds = %bb211
441  unreachable
442
443bb215:                                            ; preds = %bb211
444  %tmp216 = add i64 undef, %tmp208
445  %tmp217 = sub i64 %tmp209, undef
446  br i1 false, label %bb218, label %bb219
447
448bb218:                                            ; preds = %bb215
449  br label %bb219
450
451bb219:                                            ; preds = %bb218, %bb215
452  %tmp220 = trunc i64 %tmp217 to i32
453  br label %bb221
454
455bb221:                                            ; preds = %bb230, %bb219
456  %tmp222 = phi i64 [ %tmp231, %bb230 ], [ 0, %bb219 ]
457  %tmp223 = phi i32 [ %tmp232, %bb230 ], [ 0, %bb219 ]
458  %tmp224 = trunc i64 %tmp222 to i32
459  %tmp225 = icmp slt i32 %tmp224, %tmp220
460  br i1 %tmp225, label %bb226, label %bb234
461
462bb226:                                            ; preds = %bb221
463  %tmp227 = add i64 %tmp222, %tmp216
464  %tmp228 = getelementptr inbounds %struct.jim* @global3, i64 0, i32 3, i64 %tmp227
465  %tmp229 = load i8* %tmp228, align 1
466  br i1 false, label %bb233, label %bb230
467
468bb230:                                            ; preds = %bb226
469  %tmp231 = add i64 %tmp222, 1
470  %tmp232 = add nsw i32 %tmp223, 1
471  br i1 undef, label %bb234, label %bb221
472
473bb233:                                            ; preds = %bb226
474  br i1 undef, label %bb235, label %bb234
475
476bb234:                                            ; preds = %bb233, %bb230, %bb221
477  br label %bb247
478
479bb235:                                            ; preds = %bb233
480  %tmp236 = add nsw i32 %tmp223, 1
481  %tmp237 = sext i32 %tmp236 to i64
482  %tmp238 = sub i64 %tmp217, %tmp237
483  br i1 %tmp66, label %bb239, label %bb240
484
485bb239:                                            ; preds = %bb235
486  unreachable
487
488bb240:                                            ; preds = %bb235
489  switch i32 0, label %bb244 [
490    i32 0, label %bb241
491    i32 1, label %bb241
492    i32 4, label %bb241
493    i32 6, label %bb241
494    i32 9, label %bb241
495  ]
496
497bb241:                                            ; preds = %bb240, %bb240, %bb240, %bb240, %bb240
498  %tmp242 = trunc i64 %tmp238 to i32
499  %tmp243 = icmp slt i32 0, %tmp242
500  br i1 false, label %bb246, label %bb245
501
502bb244:                                            ; preds = %bb240
503  unreachable
504
505bb245:                                            ; preds = %bb241
506  unreachable
507
508bb246:                                            ; preds = %bb241
509  unreachable
510
511bb247:                                            ; preds = %bb234, %bb144, %bb106, %bb71, %bb58
512  ret void
513}
514
515declare void @zot(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
516