scev-expander-preserve-lcssa.ll
24.9 KB
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
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -indvars -S -indvars -verify-loop-lcssa %s | FileCheck %s
; Make sure SCEVExpander does not crash and introduce unnecessary LCSSA PHI nodes.
; The tests are a collection of cases with crashes when preserving LCSSA PHI
; nodes directly in SCEVExpander.
declare i1 @cond() readnone
define void @test1(i8 %x, [512 x i8]* %ptr) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LAND_LHS_TRUE:%.*]]
; CHECK: land.lhs.true:
; CHECK-NEXT: br label [[WHILE_COND22:%.*]]
; CHECK: while.cond22:
; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_1]], label [[WHILE_COND22]], label [[WHILE_COND29_PREHEADER:%.*]]
; CHECK: while.cond29.preheader:
; CHECK-NEXT: br label [[WHILE_BODY35:%.*]]
; CHECK: while.body35:
; CHECK-NEXT: [[I_1107:%.*]] = phi i32 [ [[I_9:%.*]], [[IF_END224:%.*]] ], [ 0, [[WHILE_COND29_PREHEADER]] ]
; CHECK-NEXT: br label [[WHILE_COND192:%.*]]
; CHECK: while.cond192:
; CHECK-NEXT: switch i8 [[X:%.*]], label [[WHILE_BODY205:%.*]] [
; CHECK-NEXT: i8 59, label [[WHILE_COND215_PREHEADER:%.*]]
; CHECK-NEXT: i8 10, label [[IF_END224_LOOPEXIT1:%.*]]
; CHECK-NEXT: ]
; CHECK: while.cond215.preheader:
; CHECK-NEXT: br label [[WHILE_COND215:%.*]]
; CHECK: while.body205:
; CHECK-NEXT: br label [[WHILE_COND192]]
; CHECK: while.cond215:
; CHECK-NEXT: [[I_8_IN:%.*]] = phi i32 [ [[I_8:%.*]], [[WHILE_COND215]] ], [ [[I_1107]], [[WHILE_COND215_PREHEADER]] ]
; CHECK-NEXT: [[I_8]] = add nsw i32 [[I_8_IN]], 1
; CHECK-NEXT: [[IDXPROM216:%.*]] = sext i32 [[I_8]] to i64
; CHECK-NEXT: [[ARRAYIDX217:%.*]] = getelementptr inbounds [512 x i8], [512 x i8]* [[PTR:%.*]], i64 0, i64 [[IDXPROM216]]
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_2]], label [[WHILE_COND215]], label [[IF_END224_LOOPEXIT:%.*]]
; CHECK: if.end224.loopexit:
; CHECK-NEXT: [[I_8_LCSSA:%.*]] = phi i32 [ [[I_8]], [[WHILE_COND215]] ]
; CHECK-NEXT: br label [[IF_END224]]
; CHECK: if.end224.loopexit1:
; CHECK-NEXT: br label [[IF_END224]]
; CHECK: if.end224:
; CHECK-NEXT: [[I_9]] = phi i32 [ [[I_8_LCSSA]], [[IF_END224_LOOPEXIT]] ], [ [[I_1107]], [[IF_END224_LOOPEXIT1]] ]
; CHECK-NEXT: [[C_3:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_3]], label [[WHILE_END225:%.*]], label [[WHILE_BODY35]]
; CHECK: while.end225:
; CHECK-NEXT: br label [[LAND_LHS_TRUE]]
;
entry:
br label %land.lhs.true
land.lhs.true: ; preds = %while.end225, %entry
br label %while.cond22
while.cond22: ; preds = %while.cond22, %land.lhs.true
%c.1 = call i1 @cond()
br i1 %c.1, label %while.cond22, label %while.cond29.preheader
while.cond29.preheader: ; preds = %while.cond22
br label %while.body35
while.body35: ; preds = %if.end224, %while.cond29.preheader
%i.1107 = phi i32 [ %i.9, %if.end224 ], [ 0, %while.cond29.preheader ]
br label %while.cond192
while.cond192: ; preds = %while.body205, %while.body35
%i.7 = phi i32 [ %i.1107, %while.body35 ], [ %inc206, %while.body205 ]
switch i8 %x, label %while.body205 [
i8 59, label %while.cond215
i8 10, label %if.end224
]
while.body205: ; preds = %while.cond192
%inc206 = add nsw i32 %i.7, 1
br label %while.cond192
while.cond215: ; preds = %while.cond215, %while.cond192
%i.8.in = phi i32 [ %i.8, %while.cond215 ], [ %i.7, %while.cond192 ]
%i.8 = add nsw i32 %i.8.in, 1
%idxprom216 = sext i32 %i.8 to i64
%arrayidx217 = getelementptr inbounds [512 x i8], [512 x i8]* %ptr, i64 0, i64 %idxprom216
%c.2 = call i1 @cond()
br i1 %c.2, label %while.cond215, label %if.end224
if.end224: ; preds = %while.cond215, %while.cond192
%i.9 = phi i32 [ %i.8, %while.cond215 ], [ %i.7, %while.cond192 ]
%c.3 = call i1 @cond()
br i1 %c.3, label %while.end225, label %while.body35
while.end225: ; preds = %if.end224
br label %land.lhs.true
}
define void @test2(i16 %x) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_1]], label [[FOR_COND_PREHEADER:%.*]], label [[RETURN:%.*]]
; CHECK: for.cond.preheader:
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: switch i16 [[X:%.*]], label [[RETURN_LOOPEXIT1:%.*]] [
; CHECK-NEXT: i16 41, label [[FOR_END:%.*]]
; CHECK-NEXT: i16 43, label [[FOR_COND]]
; CHECK-NEXT: ]
; CHECK: for.end:
; CHECK-NEXT: [[I_0_LCSSA2:%.*]] = phi i32 [ 0, [[FOR_COND]] ]
; CHECK-NEXT: [[CMP8243:%.*]] = icmp sgt i32 [[I_0_LCSSA2]], 0
; CHECK-NEXT: br i1 [[CMP8243]], label [[FOR_BODY84_PREHEADER:%.*]], label [[RETURN]]
; CHECK: for.body84.preheader:
; CHECK-NEXT: br label [[FOR_BODY84:%.*]]
; CHECK: for.body84:
; CHECK-NEXT: [[I_144:%.*]] = phi i32 [ [[INC:%.*]], [[IF_END106:%.*]] ], [ 0, [[FOR_BODY84_PREHEADER]] ]
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_2]], label [[IF_END106]], label [[RETURN_LOOPEXIT:%.*]]
; CHECK: if.end106:
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_144]], 1
; CHECK-NEXT: [[CMP82:%.*]] = icmp slt i32 [[INC]], [[I_0_LCSSA2]]
; CHECK-NEXT: br i1 [[CMP82]], label [[FOR_BODY84]], label [[RETURN_LOOPEXIT]]
; CHECK: return.loopexit:
; CHECK-NEXT: br label [[RETURN]]
; CHECK: return.loopexit1:
; CHECK-NEXT: br label [[RETURN]]
; CHECK: return:
; CHECK-NEXT: ret void
;
entry:
%c.1 = call i1 @cond()
br i1 %c.1, label %for.cond, label %return
for.cond: ; preds = %for.cond, %entry
%i.0 = phi i32 [ %sub, %for.cond ], [ 0, %entry ]
%sub = add nsw i32 %i.0, -1
switch i16 %x, label %return [
i16 41, label %for.end
i16 43, label %for.cond
]
for.end: ; preds = %for.cond
%cmp8243 = icmp sgt i32 %i.0, 0
br i1 %cmp8243, label %for.body84, label %return
for.body84: ; preds = %if.end106, %for.end
%i.144 = phi i32 [ %inc, %if.end106 ], [ 0, %for.end ]
%c.2 = call i1 @cond()
br i1 %c.2, label %if.end106, label %return
if.end106: ; preds = %for.body84
%inc = add nuw nsw i32 %i.144, 1
%cmp82 = icmp slt i32 %inc, %i.0
br i1 %cmp82, label %for.body84, label %return
return: ; preds = %if.end106, %for.body84, %for.end, %for.cond, %entry
ret void
}
declare i32 @get.i32() readnone
define void @test3(i32* %ptr) {
; CHECK-LABEL: @test3(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
; CHECK: while.body:
; CHECK-NEXT: br label [[FOR_BODY1208:%.*]]
; CHECK: for.body1208:
; CHECK-NEXT: [[M_0804:%.*]] = phi i32 [ 1, [[WHILE_BODY]] ], [ [[INC1499:%.*]], [[FOR_INC1498:%.*]] ]
; CHECK-NEXT: [[V:%.*]] = call i32 @get.i32()
; CHECK-NEXT: [[CMP1358:%.*]] = icmp eq i32 [[V]], 0
; CHECK-NEXT: br i1 [[CMP1358]], label [[IF_THEN1360:%.*]], label [[FOR_INC1498]]
; CHECK: if.then1360:
; CHECK-NEXT: [[M_0804_LCSSA:%.*]] = phi i32 [ [[M_0804]], [[FOR_BODY1208]] ]
; CHECK-NEXT: br label [[FOR_COND1390:%.*]]
; CHECK: for.cond1390:
; CHECK-NEXT: [[M_2_IN:%.*]] = phi i32 [ [[M_0804_LCSSA]], [[IF_THEN1360]] ], [ 0, [[FOR_BODY1394:%.*]] ]
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_2]], label [[FOR_BODY1394]], label [[FOR_END1469:%.*]]
; CHECK: for.body1394:
; CHECK-NEXT: br label [[FOR_COND1390]]
; CHECK: for.end1469:
; CHECK-NEXT: [[M_2_IN_LCSSA:%.*]] = phi i32 [ [[M_2_IN]], [[FOR_COND1390]] ]
; CHECK-NEXT: store i32 [[M_2_IN_LCSSA]], i32* [[PTR:%.*]], align 4
; CHECK-NEXT: br label [[WHILE_BODY]]
; CHECK: for.inc1498:
; CHECK-NEXT: [[INC1499]] = add nuw nsw i32 [[M_0804]], 1
; CHECK-NEXT: br label [[FOR_BODY1208]]
;
entry:
br label %while.body
while.body: ; preds = %for.end1469, %entry
br label %for.body1208
for.body1208: ; preds = %for.inc1498, %while.body
%m.0804 = phi i32 [ 1, %while.body ], [ %inc1499, %for.inc1498 ]
%v = call i32 @get.i32()
%cmp1358 = icmp eq i32 %v, 0
br i1 %cmp1358, label %if.then1360, label %for.inc1498
if.then1360: ; preds = %for.body1208
br label %for.cond1390
for.cond1390: ; preds = %for.body1394, %if.then1360
%m.2.in = phi i32 [ %m.0804, %if.then1360 ], [ 0, %for.body1394 ]
%c.2 = call i1 @cond()
br i1 %c.2, label %for.body1394, label %for.end1469
for.body1394: ; preds = %for.cond1390
br label %for.cond1390
for.end1469: ; preds = %for.cond1390
store i32 %m.2.in, i32* %ptr, align 4
br label %while.body
for.inc1498: ; preds = %for.body1208
%inc1499 = add nuw nsw i32 %m.0804, 1
br label %for.body1208
}
define void @test4(i32* %ptr) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
; CHECK: while.body:
; CHECK-NEXT: br label [[FOR_COND1204_PREHEADER:%.*]]
; CHECK: for.cond1204.preheader:
; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_1]], label [[IF_THEN1504:%.*]], label [[FOR_BODY1208_LR_PH:%.*]]
; CHECK: for.body1208.lr.ph:
; CHECK-NEXT: br label [[FOR_BODY1208:%.*]]
; CHECK: for.body1208:
; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ 0, [[FOR_BODY1208_LR_PH]] ], [ [[TMP1:%.*]], [[FOR_INC1498:%.*]] ]
; CHECK-NEXT: [[M_0804:%.*]] = phi i32 [ 1, [[FOR_BODY1208_LR_PH]] ], [ [[INC1499:%.*]], [[FOR_INC1498]] ]
; CHECK-NEXT: [[IDXPROM1212:%.*]] = zext i32 [[M_0804]] to i64
; CHECK-NEXT: [[V:%.*]] = call i32 @get.i32()
; CHECK-NEXT: [[CMP1215:%.*]] = icmp eq i32 0, [[V]]
; CHECK-NEXT: [[YPOS1223:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 [[IDXPROM1212]]
; CHECK-NEXT: br i1 [[CMP1215]], label [[IF_THEN1217:%.*]], label [[IF_ELSE1351:%.*]]
; CHECK: if.then1217:
; CHECK-NEXT: [[M_0804_LCSSA:%.*]] = phi i32 [ [[M_0804]], [[FOR_BODY1208]] ]
; CHECK-NEXT: br label [[FOR_COND1247:%.*]]
; CHECK: for.cond1247:
; CHECK-NEXT: [[M_1_IN:%.*]] = phi i32 [ [[M_0804_LCSSA]], [[IF_THEN1217]] ], [ [[M_1:%.*]], [[IF_THEN1260:%.*]] ]
; CHECK-NEXT: [[M_1]] = add nuw nsw i32 [[M_1_IN]], 1
; CHECK-NEXT: br label [[FOR_BODY1251:%.*]]
; CHECK: for.body1251:
; CHECK-NEXT: [[IDXPROM1255:%.*]] = zext i32 [[M_1]] to i64
; CHECK-NEXT: [[XPOS1257:%.*]] = getelementptr inbounds i32, i32* [[PTR]], i64 [[IDXPROM1255]]
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_2]], label [[IF_THEN1260]], label [[FOR_END1326:%.*]]
; CHECK: if.then1260:
; CHECK-NEXT: br label [[FOR_COND1247]]
; CHECK: for.end1326:
; CHECK-NEXT: br label [[IF_END1824:%.*]]
; CHECK: if.else1351:
; CHECK-NEXT: [[V_2:%.*]] = call i32 @get.i32()
; CHECK-NEXT: [[CMP1358:%.*]] = icmp eq i32 [[V_2]], 0
; CHECK-NEXT: br i1 [[CMP1358]], label [[IF_THEN1360:%.*]], label [[FOR_INC1498]]
; CHECK: if.then1360:
; CHECK-NEXT: [[DOTLCSSA2:%.*]] = phi i32 [ [[TMP0]], [[IF_ELSE1351]] ]
; CHECK-NEXT: [[M_0804_LCSSA1:%.*]] = phi i32 [ [[M_0804]], [[IF_ELSE1351]] ]
; CHECK-NEXT: [[CMP1392:%.*]] = icmp slt i32 [[M_0804_LCSSA1]], [[DOTLCSSA2]]
; CHECK-NEXT: unreachable
; CHECK: for.inc1498:
; CHECK-NEXT: [[INC1499]] = add nuw nsw i32 [[M_0804]], 1
; CHECK-NEXT: [[TMP1]] = load i32, i32* [[PTR]], align 8
; CHECK-NEXT: br label [[FOR_BODY1208]]
; CHECK: if.then1504:
; CHECK-NEXT: unreachable
; CHECK: if.end1824:
; CHECK-NEXT: br label [[WHILE_BODY]]
;
entry:
br label %while.body
while.body: ; preds = %if.end1824, %entry
br label %for.cond1204.preheader
for.cond1204.preheader: ; preds = %while.body
%c.1 = call i1 @cond()
br i1 %c.1, label %if.then1504, label %for.body1208.lr.ph
for.body1208.lr.ph: ; preds = %for.cond1204.preheader
br label %for.body1208
for.body1208: ; preds = %for.inc1498, %for.body1208.lr.ph
%0 = phi i32 [ 0, %for.body1208.lr.ph ], [ %1, %for.inc1498 ]
%m.0804 = phi i32 [ 1, %for.body1208.lr.ph ], [ %inc1499, %for.inc1498 ]
%idxprom1212 = zext i32 %m.0804 to i64
%v = call i32 @get.i32()
%cmp1215 = icmp eq i32 0, %v
%ypos1223 = getelementptr inbounds i32, i32* %ptr , i64 %idxprom1212
br i1 %cmp1215, label %if.then1217, label %if.else1351
if.then1217: ; preds = %for.body1208
br label %for.cond1247
for.cond1247: ; preds = %if.then1260, %if.then1217
%m.1.in = phi i32 [ %m.0804, %if.then1217 ], [ %m.1, %if.then1260 ]
%m.1 = add nuw nsw i32 %m.1.in, 1
%cmp1249 = icmp slt i32 %m.1.in, %0
br label %for.body1251
for.body1251: ; preds = %for.cond1247
%idxprom1255 = zext i32 %m.1 to i64
%xpos1257 = getelementptr inbounds i32, i32* %ptr, i64 %idxprom1255
%c.2 = call i1 @cond()
br i1 %c.2, label %if.then1260, label %for.end1326
if.then1260: ; preds = %for.body1251
br label %for.cond1247
for.end1326: ; preds = %for.body1251
br label %if.end1824
if.else1351: ; preds = %for.body1208
%v.2 = call i32 @get.i32()
%cmp1358 = icmp eq i32 %v.2, 0
br i1 %cmp1358, label %if.then1360, label %for.inc1498
if.then1360: ; preds = %if.else1351
%cmp1392 = icmp slt i32 %m.0804, %0
unreachable
for.inc1498: ; preds = %if.else1351
%inc1499 = add nuw nsw i32 %m.0804, 1
%1 = load i32, i32* %ptr, align 8
br label %for.body1208
if.then1504: ; preds = %for.cond1204.preheader
unreachable
if.end1824: ; preds = %for.end1326
br label %while.body
}
define void @test5(i8* %header, i32 %conv, i8 %n) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[POS_42:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[ADD85:%.*]], [[FOR_INC:%.*]] ]
; CHECK-NEXT: br label [[FOR_INNER:%.*]]
; CHECK: for.inner:
; CHECK-NEXT: [[I_0_I:%.*]] = phi i32 [ 0, [[FOR_BODY]] ], [ [[INC_I:%.*]], [[FOR_INNER]] ]
; CHECK-NEXT: [[INC_I]] = add nuw nsw i32 [[I_0_I]], 1
; CHECK-NEXT: [[CMP7_I:%.*]] = icmp slt i8 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[CMP7_I]], label [[FOR_INNER]], label [[FOR_INNER_EXIT:%.*]]
; CHECK: for.inner.exit:
; CHECK-NEXT: [[INC_I_LCSSA:%.*]] = phi i32 [ [[INC_I]], [[FOR_INNER]] ]
; CHECK-NEXT: br label [[FOR_INNER_2:%.*]]
; CHECK: for.inner.2:
; CHECK-NEXT: [[I_0_I1:%.*]] = phi i32 [ 0, [[FOR_INNER_EXIT]] ], [ [[INC_I3:%.*]], [[FOR_INNER_2]] ]
; CHECK-NEXT: [[INC_I3]] = add nuw nsw i32 [[I_0_I1]], 1
; CHECK-NEXT: [[CMP7_I4:%.*]] = icmp slt i8 [[N]], 0
; CHECK-NEXT: br i1 [[CMP7_I4]], label [[FOR_INNER_2]], label [[FOR_INC]]
; CHECK: for.inc:
; CHECK-NEXT: [[INC_I3_LCSSA:%.*]] = phi i32 [ [[INC_I3]], [[FOR_INNER_2]] ]
; CHECK-NEXT: [[ADD71:%.*]] = add i32 [[POS_42]], [[INC_I_LCSSA]]
; CHECK-NEXT: [[ADD85]] = add i32 [[ADD71]], [[INC_I3_LCSSA]]
; CHECK-NEXT: br i1 false, label [[FOR_BODY]], label [[WHILE_COND_PREHEADER:%.*]]
; CHECK: while.cond.preheader:
; CHECK-NEXT: [[ADD85_LCSSA:%.*]] = phi i32 [ [[ADD85]], [[FOR_INC]] ]
; CHECK-NEXT: [[SHL:%.*]] = shl nuw nsw i32 [[CONV:%.*]], 2
; CHECK-NEXT: br label [[WHILE_COND:%.*]]
; CHECK: while.cond:
; CHECK-NEXT: [[POS_8:%.*]] = phi i32 [ [[INC114:%.*]], [[WHILE_BODY:%.*]] ], [ [[ADD85_LCSSA]], [[WHILE_COND_PREHEADER]] ]
; CHECK-NEXT: [[CMP112:%.*]] = icmp ult i32 [[POS_8]], [[SHL]]
; CHECK-NEXT: br i1 [[CMP112]], label [[WHILE_BODY]], label [[CLEANUP122:%.*]]
; CHECK: while.body:
; CHECK-NEXT: [[INC114]] = add nuw i32 [[POS_8]], 1
; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_1]], label [[WHILE_COND]], label [[CLEANUP122]]
; CHECK: cleanup122:
; CHECK-NEXT: ret void
;
entry:
%shl = shl nuw nsw i32 %conv, 2
br label %for.body
for.body: ; preds = %entry, %for.inc
%pos.42 = phi i32 [ 0, %entry ], [ %add85, %for.inc ]
br label %for.inner
for.inner: ; preds = %for.body.i, %for.body
%i.0.i = phi i32 [ 0, %for.body ], [ %inc.i, %for.inner ]
%inc.i = add nuw nsw i32 %i.0.i, 1
%cmp7.i = icmp slt i8 %n, 0
br i1 %cmp7.i, label %for.inner, label %for.inner.exit
for.inner.exit: ; preds = %for.body.i
%add71 = add i32 %pos.42, %inc.i
br label %for.inner.2
for.inner.2: ; preds = %for.body.i6, %cleanup.cont74
%i.0.i1 = phi i32 [ 0, %for.inner.exit ], [ %inc.i3, %for.inner.2]
%inc.i3 = add nuw nsw i32 %i.0.i1, 1
%cmp7.i4 = icmp slt i8 %n, 0
br i1 %cmp7.i4, label %for.inner.2, label %for.inc
for.inc: ; preds = %for.body.i6
%add85 = add i32 %add71, %inc.i3
br i1 false, label %for.body, label %while.cond.preheader
while.cond.preheader: ; preds = %for.inc
br label %while.cond
while.cond: ; preds = %while.cond.preheader, %while.body
%pos.8 = phi i32 [ %inc114, %while.body ], [ %add85, %while.cond.preheader ]
%cmp112 = icmp ult i32 %pos.8, %shl
br i1 %cmp112, label %while.body, label %cleanup122
while.body: ; preds = %while.cond
%inc114 = add nuw i32 %pos.8, 1
%c.1 = call i1 @cond()
br i1 %c.1, label %while.cond, label %cleanup122
cleanup122: ; preds = %while.body, %while.cond
ret void
}
define void @test6(i8 %x) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_1]], label [[LAND_RHS:%.*]], label [[WHILE_END316:%.*]]
; CHECK: land.rhs:
; CHECK-NEXT: br label [[WHILE_BODY35:%.*]]
; CHECK: while.body35:
; CHECK-NEXT: br label [[WHILE_COND192:%.*]]
; CHECK: while.cond192:
; CHECK-NEXT: switch i8 [[X:%.*]], label [[WHILE_BODY205:%.*]] [
; CHECK-NEXT: i8 59, label [[WHILE_COND215_PREHEADER:%.*]]
; CHECK-NEXT: i8 10, label [[IF_END224:%.*]]
; CHECK-NEXT: ]
; CHECK: while.cond215.preheader:
; CHECK-NEXT: [[I_7_LCSSA:%.*]] = phi i32 [ 0, [[WHILE_COND192]] ]
; CHECK-NEXT: br label [[WHILE_COND215:%.*]]
; CHECK: while.body205:
; CHECK-NEXT: br label [[WHILE_COND192]]
; CHECK: while.cond215:
; CHECK-NEXT: [[I_8_IN:%.*]] = phi i32 [ [[I_8:%.*]], [[WHILE_COND215]] ], [ [[I_7_LCSSA]], [[WHILE_COND215_PREHEADER]] ]
; CHECK-NEXT: [[I_8]] = add nuw nsw i32 [[I_8_IN]], 1
; CHECK-NEXT: [[IDXPROM216:%.*]] = sext i32 [[I_8]] to i64
; CHECK-NEXT: [[ARRAYIDX217:%.*]] = getelementptr inbounds [512 x i8], [512 x i8]* null, i64 0, i64 [[IDXPROM216]]
; CHECK-NEXT: br label [[WHILE_COND215]]
; CHECK: if.end224:
; CHECK-NEXT: [[C_2:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_2]], label [[WHILE_END225:%.*]], label [[WHILE_BODY35]]
; CHECK: while.end225:
; CHECK-NEXT: unreachable
; CHECK: while.end316:
; CHECK-NEXT: ret void
;
entry:
%c.1 = call i1 @cond()
br i1 %c.1, label %land.rhs, label %while.end316
land.rhs: ; preds = %entry
br label %while.body35
while.body35: ; preds = %if.end224, %land.rhs
br label %while.cond192
while.cond192: ; preds = %while.body205, %while.body35
%i.7 = phi i32 [ 0, %while.body35 ], [ %inc206, %while.body205 ]
switch i8 %x, label %while.body205 [
i8 59, label %while.cond215
i8 10, label %if.end224
]
while.body205: ; preds = %while.cond192
%inc206 = add nsw i32 %i.7, 1
br label %while.cond192
while.cond215: ; preds = %while.cond215, %while.cond192
%i.8.in = phi i32 [ %i.8, %while.cond215 ], [ %i.7, %while.cond192 ]
%i.8 = add nsw i32 %i.8.in, 1
%idxprom216 = sext i32 %i.8 to i64
%arrayidx217 = getelementptr inbounds [512 x i8], [512 x i8]* null, i64 0, i64 %idxprom216
br label %while.cond215
if.end224: ; preds = %while.cond192
%c.2 = call i1 @cond()
br i1 %c.2, label %while.end225, label %while.body35
while.end225: ; preds = %if.end224
unreachable
while.end316: ; preds = %entry
ret void
}
define void @test7(i32* %ptr) {
; CHECK-LABEL: @test7(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
; CHECK: while.body:
; CHECK-NEXT: br label [[FOR_BODY1208:%.*]]
; CHECK: for.body1208:
; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ undef, [[WHILE_BODY]] ], [ [[TMP1:%.*]], [[FOR_INC1498:%.*]] ]
; CHECK-NEXT: [[M_048:%.*]] = phi i32 [ 1, [[WHILE_BODY]] ], [ [[INC1499:%.*]], [[FOR_INC1498]] ]
; CHECK-NEXT: [[IDXPROM1212:%.*]] = zext i32 [[M_048]] to i64
; CHECK-NEXT: [[XPOS1214:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 [[IDXPROM1212]]
; CHECK-NEXT: [[V_1:%.*]] = call i32 @get.i32()
; CHECK-NEXT: [[CMP1215:%.*]] = icmp eq i32 0, [[V_1]]
; CHECK-NEXT: br i1 [[CMP1215]], label [[IF_THEN1217:%.*]], label [[IF_ELSE1351:%.*]]
; CHECK: if.then1217:
; CHECK-NEXT: [[DOTLCSSA:%.*]] = phi i32 [ [[TMP0]], [[FOR_BODY1208]] ]
; CHECK-NEXT: [[M_048_LCSSA:%.*]] = phi i32 [ [[M_048]], [[FOR_BODY1208]] ]
; CHECK-NEXT: [[CMP1249_NOT_NOT:%.*]] = icmp slt i32 [[M_048_LCSSA]], [[DOTLCSSA]]
; CHECK-NEXT: unreachable
; CHECK: if.else1351:
; CHECK-NEXT: [[CMP1358:%.*]] = icmp eq i32 0, undef
; CHECK-NEXT: br i1 [[CMP1358]], label [[IF_THEN1360:%.*]], label [[FOR_INC1498]]
; CHECK: if.then1360:
; CHECK-NEXT: [[M_048_LCSSA1:%.*]] = phi i32 [ [[M_048]], [[IF_ELSE1351]] ]
; CHECK-NEXT: br label [[FOR_COND1390:%.*]]
; CHECK: for.cond1390:
; CHECK-NEXT: [[M_2_IN:%.*]] = phi i32 [ [[M_048_LCSSA1]], [[IF_THEN1360]] ], [ [[M_2:%.*]], [[IF_THEN1403:%.*]] ]
; CHECK-NEXT: [[M_2]] = add nuw nsw i32 [[M_2_IN]], 1
; CHECK-NEXT: [[IDXPROM1398:%.*]] = zext i32 [[M_2]] to i64
; CHECK-NEXT: br label [[IF_THEN1403]]
; CHECK: if.then1403:
; CHECK-NEXT: [[XPOS1409:%.*]] = getelementptr inbounds i32, i32* [[PTR]], i64 [[IDXPROM1398]]
; CHECK-NEXT: [[C_1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C_1]], label [[FOR_COND1390]], label [[FOR_END1469:%.*]]
; CHECK: for.end1469:
; CHECK-NEXT: br label [[IF_END1824:%.*]]
; CHECK: for.inc1498:
; CHECK-NEXT: [[INC1499]] = add nuw nsw i32 [[M_048]], 1
; CHECK-NEXT: [[TMP1]] = load i32, i32* undef, align 8
; CHECK-NEXT: br label [[FOR_BODY1208]]
; CHECK: if.end1824:
; CHECK-NEXT: br label [[WHILE_BODY]]
;
entry:
br label %while.body
while.body: ; preds = %if.end1824, %entry
br label %for.body1208
for.body1208: ; preds = %for.inc1498, %while.body
%0 = phi i32 [ undef, %while.body ], [ %1, %for.inc1498 ]
%m.048 = phi i32 [ 1, %while.body ], [ %inc1499, %for.inc1498 ]
%idxprom1212 = zext i32 %m.048 to i64
%xpos1214 = getelementptr inbounds i32, i32* %ptr, i64 %idxprom1212
%v.1 = call i32 @get.i32()
%cmp1215 = icmp eq i32 0, %v.1
br i1 %cmp1215, label %if.then1217, label %if.else1351
if.then1217: ; preds = %for.body1208
%cmp1249.not.not = icmp slt i32 %m.048, %0
unreachable
if.else1351: ; preds = %for.body1208
%cmp1358 = icmp eq i32 0, undef
br i1 %cmp1358, label %if.then1360, label %for.inc1498
if.then1360: ; preds = %if.else1351
br label %for.cond1390
for.cond1390: ; preds = %if.then1403, %if.then1360
%m.2.in = phi i32 [ %m.048, %if.then1360 ], [ %m.2, %if.then1403 ]
%m.2 = add nuw nsw i32 %m.2.in, 1
%cmp1392.not.not = icmp slt i32 %m.2.in, %0
%idxprom1398 = zext i32 %m.2 to i64
br label %if.then1403
if.then1403: ; preds = %for.cond1390
%xpos1409 = getelementptr inbounds i32, i32* %ptr, i64 %idxprom1398
%c.1 = call i1 @cond()
br i1 %c.1, label %for.cond1390, label %for.end1469
for.end1469: ; preds = %if.then1403
br label %if.end1824
for.inc1498: ; preds = %if.else1351
%inc1499 = add nuw nsw i32 %m.048, 1
%1 = load i32, i32* undef, align 8
br label %for.body1208
if.end1824: ; preds = %for.end1469
br label %while.body
}