llvm.org GIT mirror llvm / master test / Transforms / SLPVectorizer / X86 / insert-element-build-vector.ll
master

Tree @master (Download .tar.gz)

insert-element-build-vector.ll @masterraw · history · blame

  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
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -slp-vectorizer -slp-threshold=-10000 < %s | FileCheck %s
; RUN: opt -S -slp-vectorizer -slp-threshold=0 < %s | FileCheck %s --check-prefix=ZEROTHRESH
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-n8:16:32:64-S128"

target triple = "x86_64-apple-macosx10.8.0"

define <4 x float> @simple_select(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
; CHECK-LABEL: @simple_select(
; CHECK-NEXT:    [[TMP1:%.*]] = icmp ne <4 x i32> [[C:%.*]], zeroinitializer
; CHECK-NEXT:    [[TMP2:%.*]] = select <4 x i1> [[TMP1]], <4 x float> [[A:%.*]], <4 x float> [[B:%.*]]
; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[TMP2]], i32 0
; CHECK-NEXT:    [[RA:%.*]] = insertelement <4 x float> undef, float [[TMP3]], i32 0
; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[TMP2]], i32 1
; CHECK-NEXT:    [[RB:%.*]] = insertelement <4 x float> [[RA]], float [[TMP4]], i32 1
; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[TMP2]], i32 2
; CHECK-NEXT:    [[RC:%.*]] = insertelement <4 x float> [[RB]], float [[TMP5]], i32 2
; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[TMP2]], i32 3
; CHECK-NEXT:    [[RD:%.*]] = insertelement <4 x float> [[RC]], float [[TMP6]], i32 3
; CHECK-NEXT:    ret <4 x float> [[RD]]
;
; ZEROTHRESH-LABEL: @simple_select(
; ZEROTHRESH-NEXT:    [[TMP1:%.*]] = icmp ne <4 x i32> [[C:%.*]], zeroinitializer
; ZEROTHRESH-NEXT:    [[TMP2:%.*]] = select <4 x i1> [[TMP1]], <4 x float> [[A:%.*]], <4 x float> [[B:%.*]]
; ZEROTHRESH-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[TMP2]], i32 0
; ZEROTHRESH-NEXT:    [[RA:%.*]] = insertelement <4 x float> undef, float [[TMP3]], i32 0
; ZEROTHRESH-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[TMP2]], i32 1
; ZEROTHRESH-NEXT:    [[RB:%.*]] = insertelement <4 x float> [[RA]], float [[TMP4]], i32 1
; ZEROTHRESH-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[TMP2]], i32 2
; ZEROTHRESH-NEXT:    [[RC:%.*]] = insertelement <4 x float> [[RB]], float [[TMP5]], i32 2
; ZEROTHRESH-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[TMP2]], i32 3
; ZEROTHRESH-NEXT:    [[RD:%.*]] = insertelement <4 x float> [[RC]], float [[TMP6]], i32 3
; ZEROTHRESH-NEXT:    ret <4 x float> [[RD]]
;
  %c0 = extractelement <4 x i32> %c, i32 0
  %c1 = extractelement <4 x i32> %c, i32 1
  %c2 = extractelement <4 x i32> %c, i32 2
  %c3 = extractelement <4 x i32> %c, i32 3
  %a0 = extractelement <4 x float> %a, i32 0
  %a1 = extractelement <4 x float> %a, i32 1
  %a2 = extractelement <4 x float> %a, i32 2
  %a3 = extractelement <4 x float> %a, i32 3
  %b0 = extractelement <4 x float> %b, i32 0
  %b1 = extractelement <4 x float> %b, i32 1
  %b2 = extractelement <4 x float> %b, i32 2
  %b3 = extractelement <4 x float> %b, i32 3
  %cmp0 = icmp ne i32 %c0, 0
  %cmp1 = icmp ne i32 %c1, 0
  %cmp2 = icmp ne i32 %c2, 0
  %cmp3 = icmp ne i32 %c3, 0
  %s0 = select i1 %cmp0, float %a0, float %b0
  %s1 = select i1 %cmp1, float %a1, float %b1
  %s2 = select i1 %cmp2, float %a2, float %b2
  %s3 = select i1 %cmp3, float %a3, float %b3
  %ra = insertelement <4 x float> undef, float %s0, i32 0
  %rb = insertelement <4 x float> %ra, float %s1, i32 1
  %rc = insertelement <4 x float> %rb, float %s2, i32 2
  %rd = insertelement <4 x float> %rc, float %s3, i32 3
  ret <4 x float> %rd
}

declare void @llvm.assume(i1) nounwind

; This entire tree is ephemeral, don't vectorize any of it.
define <4 x float> @simple_select_eph(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
; CHECK-LABEL: @simple_select_eph(
; CHECK-NEXT:    [[C0:%.*]] = extractelement <4 x i32> [[C:%.*]], i32 0
; CHECK-NEXT:    [[C1:%.*]] = extractelement <4 x i32> [[C]], i32 1
; CHECK-NEXT:    [[C2:%.*]] = extractelement <4 x i32> [[C]], i32 2
; CHECK-NEXT:    [[C3:%.*]] = extractelement <4 x i32> [[C]], i32 3
; CHECK-NEXT:    [[A0:%.*]] = extractelement <4 x float> [[A:%.*]], i32 0
; CHECK-NEXT:    [[A1:%.*]] = extractelement <4 x float> [[A]], i32 1
; CHECK-NEXT:    [[A2:%.*]] = extractelement <4 x float> [[A]], i32 2
; CHECK-NEXT:    [[A3:%.*]] = extractelement <4 x float> [[A]], i32 3
; CHECK-NEXT:    [[B0:%.*]] = extractelement <4 x float> [[B:%.*]], i32 0
; CHECK-NEXT:    [[B1:%.*]] = extractelement <4 x float> [[B]], i32 1
; CHECK-NEXT:    [[B2:%.*]] = extractelement <4 x float> [[B]], i32 2
; CHECK-NEXT:    [[B3:%.*]] = extractelement <4 x float> [[B]], i32 3
; CHECK-NEXT:    [[CMP0:%.*]] = icmp ne i32 [[C0]], 0
; CHECK-NEXT:    [[CMP1:%.*]] = icmp ne i32 [[C1]], 0
; CHECK-NEXT:    [[CMP2:%.*]] = icmp ne i32 [[C2]], 0
; CHECK-NEXT:    [[CMP3:%.*]] = icmp ne i32 [[C3]], 0
; CHECK-NEXT:    [[S0:%.*]] = select i1 [[CMP0]], float [[A0]], float [[B0]]
; CHECK-NEXT:    [[S1:%.*]] = select i1 [[CMP1]], float [[A1]], float [[B1]]
; CHECK-NEXT:    [[S2:%.*]] = select i1 [[CMP2]], float [[A2]], float [[B2]]
; CHECK-NEXT:    [[S3:%.*]] = select i1 [[CMP3]], float [[A3]], float [[B3]]
; CHECK-NEXT:    [[RA:%.*]] = insertelement <4 x float> undef, float [[S0]], i32 0
; CHECK-NEXT:    [[RB:%.*]] = insertelement <4 x float> [[RA]], float [[S1]], i32 1
; CHECK-NEXT:    [[RC:%.*]] = insertelement <4 x float> [[RB]], float [[S2]], i32 2
; CHECK-NEXT:    [[RD:%.*]] = insertelement <4 x float> [[RC]], float [[S3]], i32 3
; CHECK-NEXT:    [[Q0:%.*]] = extractelement <4 x float> [[RD]], i32 0
; CHECK-NEXT:    [[Q1:%.*]] = extractelement <4 x float> [[RD]], i32 1
; CHECK-NEXT:    [[Q2:%.*]] = extractelement <4 x float> [[RD]], i32 2
; CHECK-NEXT:    [[Q3:%.*]] = extractelement <4 x float> [[RD]], i32 3
; CHECK-NEXT:    [[Q4:%.*]] = fadd float [[Q0]], [[Q1]]
; CHECK-NEXT:    [[Q5:%.*]] = fadd float [[Q2]], [[Q3]]
; CHECK-NEXT:    [[Q6:%.*]] = fadd float [[Q4]], [[Q5]]
; CHECK-NEXT:    [[QI:%.*]] = fcmp olt float [[Q6]], [[Q5]]
; CHECK-NEXT:    call void @llvm.assume(i1 [[QI]])
; CHECK-NEXT:    ret <4 x float> undef
;
; ZEROTHRESH-LABEL: @simple_select_eph(
; ZEROTHRESH-NEXT:    [[C0:%.*]] = extractelement <4 x i32> [[C:%.*]], i32 0
; ZEROTHRESH-NEXT:    [[C1:%.*]] = extractelement <4 x i32> [[C]], i32 1
; ZEROTHRESH-NEXT:    [[C2:%.*]] = extractelement <4 x i32> [[C]], i32 2
; ZEROTHRESH-NEXT:    [[C3:%.*]] = extractelement <4 x i32> [[C]], i32 3
; ZEROTHRESH-NEXT:    [[A0:%.*]] = extractelement <4 x float> [[A:%.*]], i32 0
; ZEROTHRESH-NEXT:    [[A1:%.*]] = extractelement <4 x float> [[A]], i32 1
; ZEROTHRESH-NEXT:    [[A2:%.*]] = extractelement <4 x float> [[A]], i32 2
; ZEROTHRESH-NEXT:    [[A3:%.*]] = extractelement <4 x float> [[A]], i32 3
; ZEROTHRESH-NEXT:    [[B0:%.*]] = extractelement <4 x float> [[B:%.*]], i32 0
; ZEROTHRESH-NEXT:    [[B1:%.*]] = extractelement <4 x float> [[B]], i32 1
; ZEROTHRESH-NEXT:    [[B2:%.*]] = extractelement <4 x float> [[B]], i32 2
; ZEROTHRESH-NEXT:    [[B3:%.*]] = extractelement <4 x float> [[B]], i32 3
; ZEROTHRESH-NEXT:    [[CMP0:%.*]] = icmp ne i32 [[C0]], 0
; ZEROTHRESH-NEXT:    [[CMP1:%.*]] = icmp ne i32 [[C1]], 0
; ZEROTHRESH-NEXT:    [[CMP2:%.*]] = icmp ne i32 [[C2]], 0
; ZEROTHRESH-NEXT:    [[CMP3:%.*]] = icmp ne i32 [[C3]], 0
; ZEROTHRESH-NEXT:    [[S0:%.*]] = select i1 [[CMP0]], float [[A0]], float [[B0]]
; ZEROTHRESH-NEXT:    [[S1:%.*]] = select i1 [[CMP1]], float [[A1]], float [[B1]]
; ZEROTHRESH-NEXT:    [[S2:%.*]] = select i1 [[CMP2]], float [[A2]], float [[B2]]
; ZEROTHRESH-NEXT:    [[S3:%.*]] = select i1 [[CMP3]], float [[A3]], float [[B3]]
; ZEROTHRESH-NEXT:    [[RA:%.*]] = insertelement <4 x float> undef, float [[S0]], i32 0
; ZEROTHRESH-NEXT:    [[RB:%.*]] = insertelement <4 x float> [[RA]], float [[S1]], i32 1
; ZEROTHRESH-NEXT:    [[RC:%.*]] = insertelement <4 x float> [[RB]], float [[S2]], i32 2
; ZEROTHRESH-NEXT:    [[RD:%.*]] = insertelement <4 x float> [[RC]], float [[S3]], i32 3
; ZEROTHRESH-NEXT:    [[Q0:%.*]] = extractelement <4 x float> [[RD]], i32 0
; ZEROTHRESH-NEXT:    [[Q1:%.*]] = extractelement <4 x float> [[RD]], i32 1
; ZEROTHRESH-NEXT:    [[Q2:%.*]] = extractelement <4 x float> [[RD]], i32 2
; ZEROTHRESH-NEXT:    [[Q3:%.*]] = extractelement <4 x float> [[RD]], i32 3
; ZEROTHRESH-NEXT:    [[Q4:%.*]] = fadd float [[Q0]], [[Q1]]
; ZEROTHRESH-NEXT:    [[Q5:%.*]] = fadd float [[Q2]], [[Q3]]
; ZEROTHRESH-NEXT:    [[Q6:%.*]] = fadd float [[Q4]], [[Q5]]
; ZEROTHRESH-NEXT:    [[QI:%.*]] = fcmp olt float [[Q6]], [[Q5]]
; ZEROTHRESH-NEXT:    call void @llvm.assume(i1 [[QI]])
; ZEROTHRESH-NEXT:    ret <4 x float> undef
;
  %c0 = extractelement <4 x i32> %c, i32 0
  %c1 = extractelement <4 x i32> %c, i32 1
  %c2 = extractelement <4 x i32> %c, i32 2
  %c3 = extractelement <4 x i32> %c, i32 3
  %a0 = extractelement <4 x float> %a, i32 0
  %a1 = extractelement <4 x float> %a, i32 1
  %a2 = extractelement <4 x float> %a, i32 2
  %a3 = extractelement <4 x float> %a, i32 3
  %b0 = extractelement <4 x float> %b, i32 0
  %b1 = extractelement <4 x float> %b, i32 1
  %b2 = extractelement <4 x float> %b, i32 2
  %b3 = extractelement <4 x float> %b, i32 3
  %cmp0 = icmp ne i32 %c0, 0
  %cmp1 = icmp ne i32 %c1, 0
  %cmp2 = icmp ne i32 %c2, 0
  %cmp3 = icmp ne i32 %c3, 0
  %s0 = select i1 %cmp0, float %a0, float %b0
  %s1 = select i1 %cmp1, float %a1, float %b1
  %s2 = select i1 %cmp2, float %a2, float %b2
  %s3 = select i1 %cmp3, float %a3, float %b3
  %ra = insertelement <4 x float> undef, float %s0, i32 0
  %rb = insertelement <4 x float> %ra, float %s1, i32 1
  %rc = insertelement <4 x float> %rb, float %s2, i32 2
  %rd = insertelement <4 x float> %rc, float %s3, i32 3
  %q0 = extractelement <4 x float> %rd, i32 0
  %q1 = extractelement <4 x float> %rd, i32 1
  %q2 = extractelement <4 x float> %rd, i32 2
  %q3 = extractelement <4 x float> %rd, i32 3
  %q4 = fadd float %q0, %q1
  %q5 = fadd float %q2, %q3
  %q6 = fadd float %q4, %q5
  %qi = fcmp olt float %q6, %q5
  call void @llvm.assume(i1 %qi)
  ret <4 x float> undef
}

; Insert in an order different from the vector indices to make sure it
; doesn't matter
define <4 x float> @simple_select_insert_out_of_order(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
; CHECK-LABEL: @simple_select_insert_out_of_order(
; CHECK-NEXT:    [[TMP1:%.*]] = icmp ne <4 x i32> [[C:%.*]], zeroinitializer
; CHECK-NEXT:    [[TMP2:%.*]] = select <4 x i1> [[TMP1]], <4 x float> [[A:%.*]], <4 x float> [[B:%.*]]
; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[TMP2]], i32 0
; CHECK-NEXT:    [[RA:%.*]] = insertelement <4 x float> undef, float [[TMP3]], i32 2
; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[TMP2]], i32 1
; CHECK-NEXT:    [[RB:%.*]] = insertelement <4 x float> [[RA]], float [[TMP4]], i32 1
; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[TMP2]], i32 2
; CHECK-NEXT:    [[RC:%.*]] = insertelement <4 x float> [[RB]], float [[TMP5]], i32 0
; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[TMP2]], i32 3
; CHECK-NEXT:    [[RD:%.*]] = insertelement <4 x float> [[RC]], float [[TMP6]], i32 3
; CHECK-NEXT:    ret <4 x float> [[RD]]
;
; ZEROTHRESH-LABEL: @simple_select_insert_out_of_order(
; ZEROTHRESH-NEXT:    [[TMP1:%.*]] = icmp ne <4 x i32> [[C:%.*]], zeroinitializer
; ZEROTHRESH-NEXT:    [[TMP2:%.*]] = select <4 x i1> [[TMP1]], <4 x float> [[A:%.*]], <4 x float> [[B:%.*]]
; ZEROTHRESH-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[TMP2]], i32 0
; ZEROTHRESH-NEXT:    [[RA:%.*]] = insertelement <4 x float> undef, float [[TMP3]], i32 2
; ZEROTHRESH-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[TMP2]], i32 1
; ZEROTHRESH-NEXT:    [[RB:%.*]] = insertelement <4 x float> [[RA]], float [[TMP4]], i32 1
; ZEROTHRESH-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[TMP2]], i32 2
; ZEROTHRESH-NEXT:    [[RC:%.*]] = insertelement <4 x float> [[RB]], float [[TMP5]], i32 0
; ZEROTHRESH-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[TMP2]], i32 3
; ZEROTHRESH-NEXT:    [[RD:%.*]] = insertelement <4 x float> [[RC]], float [[TMP6]], i32 3
; ZEROTHRESH-NEXT:    ret <4 x float> [[RD]]
;
  %c0 = extractelement <4 x i32> %c, i32 0
  %c1 = extractelement <4 x i32> %c, i32 1
  %c2 = extractelement <4 x i32> %c, i32 2
  %c3 = extractelement <4 x i32> %c, i32 3
  %a0 = extractelement <4 x float> %a, i32 0
  %a1 = extractelement <4 x float> %a, i32 1
  %a2 = extractelement <4 x float> %a, i32 2
  %a3 = extractelement <4 x float> %a, i32 3
  %b0 = extractelement <4 x float> %b, i32 0
  %b1 = extractelement <4 x float> %b, i32 1
  %b2 = extractelement <4 x float> %b, i32 2
  %b3 = extractelement <4 x float> %b, i32 3
  %cmp0 = icmp ne i32 %c0, 0
  %cmp1 = icmp ne i32 %c1, 0
  %cmp2 = icmp ne i32 %c2, 0
  %cmp3 = icmp ne i32 %c3, 0
  %s0 = select i1 %cmp0, float %a0, float %b0
  %s1 = select i1 %cmp1, float %a1, float %b1
  %s2 = select i1 %cmp2, float %a2, float %b2
  %s3 = select i1 %cmp3, float %a3, float %b3
  %ra = insertelement <4 x float> undef, float %s0, i32 2
  %rb = insertelement <4 x float> %ra, float %s1, i32 1
  %rc = insertelement <4 x float> %rb, float %s2, i32 0
  %rd = insertelement <4 x float> %rc, float %s3, i32 3
  ret <4 x float> %rd
}

declare void @v4f32_user(<4 x float>) #0
declare void @f32_user(float) #0

; Multiple users of the final constructed vector
define <4 x float> @simple_select_users(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
; CHECK-LABEL: @simple_select_users(
; CHECK-NEXT:    [[TMP1:%.*]] = icmp ne <4 x i32> [[C:%.*]], zeroinitializer
; CHECK-NEXT:    [[TMP2:%.*]] = select <4 x i1> [[TMP1]], <4 x float> [[A:%.*]], <4 x float> [[B:%.*]]
; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[TMP2]], i32 0
; CHECK-NEXT:    [[RA:%.*]] = insertelement <4 x float> undef, float [[TMP3]], i32 0
; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[TMP2]], i32 1
; CHECK-NEXT:    [[RB:%.*]] = insertelement <4 x float> [[RA]], float [[TMP4]], i32 1
; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[TMP2]], i32 2
; CHECK-NEXT:    [[RC:%.*]] = insertelement <4 x float> [[RB]], float [[TMP5]], i32 2
; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[TMP2]], i32 3
; CHECK-NEXT:    [[RD:%.*]] = insertelement <4 x float> [[RC]], float [[TMP6]], i32 3
; CHECK-NEXT:    call void @v4f32_user(<4 x float> [[RD]]) #0
; CHECK-NEXT:    ret <4 x float> [[RD]]
;
; ZEROTHRESH-LABEL: @simple_select_users(
; ZEROTHRESH-NEXT:    [[TMP1:%.*]] = icmp ne <4 x i32> [[C:%.*]], zeroinitializer
; ZEROTHRESH-NEXT:    [[TMP2:%.*]] = select <4 x i1> [[TMP1]], <4 x float> [[A:%.*]], <4 x float> [[B:%.*]]
; ZEROTHRESH-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[TMP2]], i32 0
; ZEROTHRESH-NEXT:    [[RA:%.*]] = insertelement <4 x float> undef, float [[TMP3]], i32 0
; ZEROTHRESH-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[TMP2]], i32 1
; ZEROTHRESH-NEXT:    [[RB:%.*]] = insertelement <4 x float> [[RA]], float [[TMP4]], i32 1
; ZEROTHRESH-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[TMP2]], i32 2
; ZEROTHRESH-NEXT:    [[RC:%.*]] = insertelement <4 x float> [[RB]], float [[TMP5]], i32 2
; ZEROTHRESH-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[TMP2]], i32 3
; ZEROTHRESH-NEXT:    [[RD:%.*]] = insertelement <4 x float> [[RC]], float [[TMP6]], i32 3
; ZEROTHRESH-NEXT:    call void @v4f32_user(<4 x float> [[RD]]) #0
; ZEROTHRESH-NEXT:    ret <4 x float> [[RD]]
;
  %c0 = extractelement <4 x i32> %c, i32 0
  %c1 = extractelement <4 x i32> %c, i32 1
  %c2 = extractelement <4 x i32> %c, i32 2
  %c3 = extractelement <4 x i32> %c, i32 3
  %a0 = extractelement <4 x float> %a, i32 0
  %a1 = extractelement <4 x float> %a, i32 1
  %a2 = extractelement <4 x float> %a, i32 2
  %a3 = extractelement <4 x float> %a, i32 3
  %b0 = extractelement <4 x float> %b, i32 0
  %b1 = extractelement <4 x float> %b, i32 1
  %b2 = extractelement <4 x float> %b, i32 2
  %b3 = extractelement <4 x float> %b, i32 3
  %cmp0 = icmp ne i32 %c0, 0
  %cmp1 = icmp ne i32 %c1, 0
  %cmp2 = icmp ne i32 %c2, 0
  %cmp3 = icmp ne i32 %c3, 0
  %s0 = select i1 %cmp0, float %a0, float %b0
  %s1 = select i1 %cmp1, float %a1, float %b1
  %s2 = select i1 %cmp2, float %a2, float %b2
  %s3 = select i1 %cmp3, float %a3, float %b3
  %ra = insertelement <4 x float> undef, float %s0, i32 0
  %rb = insertelement <4 x float> %ra, float %s1, i32 1
  %rc = insertelement <4 x float> %rb, float %s2, i32 2
  %rd = insertelement <4 x float> %rc, float %s3, i32 3
  call void @v4f32_user(<4 x float> %rd) #0
  ret <4 x float> %rd
}

; Unused insertelement
define <4 x float> @simple_select_no_users(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
; CHECK-LABEL: @simple_select_no_users(
; CHECK-NEXT:    [[C0:%.*]] = extractelement <4 x i32> [[C:%.*]], i32 0
; CHECK-NEXT:    [[C1:%.*]] = extractelement <4 x i32> [[C]], i32 1
; CHECK-NEXT:    [[C2:%.*]] = extractelement <4 x i32> [[C]], i32 2
; CHECK-NEXT:    [[C3:%.*]] = extractelement <4 x i32> [[C]], i32 3
; CHECK-NEXT:    [[A0:%.*]] = extractelement <4 x float> [[A:%.*]], i32 0
; CHECK-NEXT:    [[A1:%.*]] = extractelement <4 x float> [[A]], i32 1
; CHECK-NEXT:    [[A2:%.*]] = extractelement <4 x float> [[A]], i32 2
; CHECK-NEXT:    [[A3:%.*]] = extractelement <4 x float> [[A]], i32 3
; CHECK-NEXT:    [[B0:%.*]] = extractelement <4 x float> [[B:%.*]], i32 0
; CHECK-NEXT:    [[B1:%.*]] = extractelement <4 x float> [[B]], i32 1
; CHECK-NEXT:    [[B2:%.*]] = extractelement <4 x float> [[B]], i32 2
; CHECK-NEXT:    [[B3:%.*]] = extractelement <4 x float> [[B]], i32 3
; CHECK-NEXT:    [[TMP1:%.*]] = insertelement <2 x i32> undef, i32 [[C0]], i32 0
; CHECK-NEXT:    [[TMP2:%.*]] = insertelement <2 x i32> [[TMP1]], i32 [[C1]], i32 1
; CHECK-NEXT:    [[TMP3:%.*]] = icmp ne <2 x i32> [[TMP2]], zeroinitializer
; CHECK-NEXT:    [[TMP4:%.*]] = insertelement <2 x i32> undef, i32 [[C2]], i32 0
; CHECK-NEXT:    [[TMP5:%.*]] = insertelement <2 x i32> [[TMP4]], i32 [[C3]], i32 1
; CHECK-NEXT:    [[TMP6:%.*]] = icmp ne <2 x i32> [[TMP5]], zeroinitializer
; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x float> undef, float [[A0]], i32 0
; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x float> [[TMP7]], float [[A1]], i32 1
; CHECK-NEXT:    [[TMP9:%.*]] = insertelement <2 x float> undef, float [[B0]], i32 0
; CHECK-NEXT:    [[TMP10:%.*]] = insertelement <2 x float> [[TMP9]], float [[B1]], i32 1
; CHECK-NEXT:    [[TMP11:%.*]] = select <2 x i1> [[TMP3]], <2 x float> [[TMP8]], <2 x float> [[TMP10]]
; CHECK-NEXT:    [[TMP12:%.*]] = insertelement <2 x float> undef, float [[A2]], i32 0
; CHECK-NEXT:    [[TMP13:%.*]] = insertelement <2 x float> [[TMP12]], float [[A3]], i32 1
; CHECK-NEXT:    [[TMP14:%.*]] = insertelement <2 x float> undef, float [[B2]], i32 0
; CHECK-NEXT:    [[TMP15:%.*]] = insertelement <2 x float> [[TMP14]], float [[B3]], i32 1
; CHECK-NEXT:    [[TMP16:%.*]] = select <2 x i1> [[TMP6]], <2 x float> [[TMP13]], <2 x float> [[TMP15]]
; CHECK-NEXT:    [[TMP17:%.*]] = extractelement <2 x float> [[TMP11]], i32 0
; CHECK-NEXT:    [[RA:%.*]] = insertelement <4 x float> undef, float [[TMP17]], i32 0
; CHECK-NEXT:    [[TMP18:%.*]] = extractelement <2 x float> [[TMP11]], i32 1
; CHECK-NEXT:    [[RB:%.*]] = insertelement <4 x float> [[RA]], float [[TMP18]], i32 1
; CHECK-NEXT:    [[TMP19:%.*]] = extractelement <2 x float> [[TMP16]], i32 0
; CHECK-NEXT:    [[RC:%.*]] = insertelement <4 x float> undef, float [[TMP19]], i32 2
; CHECK-NEXT:    [[TMP20:%.*]] = extractelement <2 x float> [[TMP16]], i32 1
; CHECK-NEXT:    [[RD:%.*]] = insertelement <4 x float> [[RC]], float [[TMP20]], i32 3
; CHECK-NEXT:    ret <4 x float> [[RD]]
;
; ZEROTHRESH-LABEL: @simple_select_no_users(
; ZEROTHRESH-NEXT:    [[C0:%.*]] = extractelement <4 x i32> [[C:%.*]], i32 0
; ZEROTHRESH-NEXT:    [[C1:%.*]] = extractelement <4 x i32> [[C]], i32 1
; ZEROTHRESH-NEXT:    [[C2:%.*]] = extractelement <4 x i32> [[C]], i32 2
; ZEROTHRESH-NEXT:    [[C3:%.*]] = extractelement <4 x i32> [[C]], i32 3
; ZEROTHRESH-NEXT:    [[A0:%.*]] = extractelement <4 x float> [[A:%.*]], i32 0
; ZEROTHRESH-NEXT:    [[A1:%.*]] = extractelement <4 x float> [[A]], i32 1
; ZEROTHRESH-NEXT:    [[A2:%.*]] = extractelement <4 x float> [[A]], i32 2
; ZEROTHRESH-NEXT:    [[A3:%.*]] = extractelement <4 x float> [[A]], i32 3
; ZEROTHRESH-NEXT:    [[B0:%.*]] = extractelement <4 x float> [[B:%.*]], i32 0
; ZEROTHRESH-NEXT:    [[B1:%.*]] = extractelement <4 x float> [[B]], i32 1
; ZEROTHRESH-NEXT:    [[B2:%.*]] = extractelement <4 x float> [[B]], i32 2
; ZEROTHRESH-NEXT:    [[B3:%.*]] = extractelement <4 x float> [[B]], i32 3
; ZEROTHRESH-NEXT:    [[CMP0:%.*]] = icmp ne i32 [[C0]], 0
; ZEROTHRESH-NEXT:    [[CMP1:%.*]] = icmp ne i32 [[C1]], 0
; ZEROTHRESH-NEXT:    [[TMP1:%.*]] = insertelement <2 x i32> undef, i32 [[C2]], i32 0
; ZEROTHRESH-NEXT:    [[TMP2:%.*]] = insertelement <2 x i32> [[TMP1]], i32 [[C3]], i32 1
; ZEROTHRESH-NEXT:    [[TMP3:%.*]] = icmp ne <2 x i32> [[TMP2]], zeroinitializer
; ZEROTHRESH-NEXT:    [[S0:%.*]] = select i1 [[CMP0]], float [[A0]], float [[B0]]
; ZEROTHRESH-NEXT:    [[S1:%.*]] = select i1 [[CMP1]], float [[A1]], float [[B1]]
; ZEROTHRESH-NEXT:    [[TMP4:%.*]] = insertelement <2 x float> undef, float [[A2]], i32 0
; ZEROTHRESH-NEXT:    [[TMP5:%.*]] = insertelement <2 x float> [[TMP4]], float [[A3]], i32 1
; ZEROTHRESH-NEXT:    [[TMP6:%.*]] = insertelement <2 x float> undef, float [[B2]], i32 0
; ZEROTHRESH-NEXT:    [[TMP7:%.*]] = insertelement <2 x float> [[TMP6]], float [[B3]], i32 1
; ZEROTHRESH-NEXT:    [[TMP8:%.*]] = select <2 x i1> [[TMP3]], <2 x float> [[TMP5]], <2 x float> [[TMP7]]
; ZEROTHRESH-NEXT:    [[RA:%.*]] = insertelement <4 x float> undef, float [[S0]], i32 0
; ZEROTHRESH-NEXT:    [[RB:%.*]] = insertelement <4 x float> [[RA]], float [[S1]], i32 1
; ZEROTHRESH-NEXT:    [[TMP9:%.*]] = extractelement <2 x float> [[TMP8]], i32 0
; ZEROTHRESH-NEXT:    [[RC:%.*]] = insertelement <4 x float> undef, float [[TMP9]], i32 2
; ZEROTHRESH-NEXT:    [[TMP10:%.*]] = extractelement <2 x float> [[TMP8]], i32 1
; ZEROTHRESH-NEXT:    [[RD:%.*]] = insertelement <4 x float> [[RC]], float [[TMP10]], i32 3
; ZEROTHRESH-NEXT:    ret <4 x float> [[RD]]
;
  %c0 = extractelement <4 x i32> %c, i32 0
  %c1 = extractelement <4 x i32> %c, i32 1
  %c2 = extractelement <4 x i32> %c, i32 2
  %c3 = extractelement <4 x i32> %c, i32 3
  %a0 = extractelement <4 x float> %a, i32 0
  %a1 = extractelement <4 x float> %a, i32 1
  %a2 = extractelement <4 x float> %a, i32 2
  %a3 = extractelement <4 x float> %a, i32 3
  %b0 = extractelement <4 x float> %b, i32 0
  %b1 = extractelement <4 x float> %b, i32 1
  %b2 = extractelement <4 x float> %b, i32 2
  %b3 = extractelement <4 x float> %b, i32 3
  %cmp0 = icmp ne i32 %c0, 0
  %cmp1 = icmp ne i32 %c1, 0
  %cmp2 = icmp ne i32 %c2, 0
  %cmp3 = icmp ne i32 %c3, 0
  %s0 = select i1 %cmp0, float %a0, float %b0
  %s1 = select i1 %cmp1, float %a1, float %b1
  %s2 = select i1 %cmp2, float %a2, float %b2
  %s3 = select i1 %cmp3, float %a3, float %b3
  %ra = insertelement <4 x float> undef, float %s0, i32 0
  %rb = insertelement <4 x float> %ra, float %s1, i32 1
  %rc = insertelement <4 x float> undef, float %s2, i32 2
  %rd = insertelement <4 x float> %rc, float %s3, i32 3
  ret <4 x float> %rd
}

; Make sure infinite loop doesn't happen which I ran into when trying
; to do this backwards this backwards
define <4 x i32> @reconstruct(<4 x i32> %c) #0 {
; CHECK-LABEL: @reconstruct(
; CHECK-NEXT:    [[C0:%.*]] = extractelement <4 x i32> [[C:%.*]], i32 0
; CHECK-NEXT:    [[C1:%.*]] = extractelement <4 x i32> [[C]], i32 1
; CHECK-NEXT:    [[C2:%.*]] = extractelement <4 x i32> [[C]], i32 2
; CHECK-NEXT:    [[C3:%.*]] = extractelement <4 x i32> [[C]], i32 3
; CHECK-NEXT:    [[RA:%.*]] = insertelement <4 x i32> undef, i32 [[C0]], i32 0
; CHECK-NEXT:    [[RB:%.*]] = insertelement <4 x i32> [[RA]], i32 [[C1]], i32 1
; CHECK-NEXT:    [[RC:%.*]] = insertelement <4 x i32> [[RB]], i32 [[C2]], i32 2
; CHECK-NEXT:    [[RD:%.*]] = insertelement <4 x i32> [[RC]], i32 [[C3]], i32 3
; CHECK-NEXT:    ret <4 x i32> [[RD]]
;
; ZEROTHRESH-LABEL: @reconstruct(
; ZEROTHRESH-NEXT:    [[C0:%.*]] = extractelement <4 x i32> [[C:%.*]], i32 0
; ZEROTHRESH-NEXT:    [[C1:%.*]] = extractelement <4 x i32> [[C]], i32 1
; ZEROTHRESH-NEXT:    [[C2:%.*]] = extractelement <4 x i32> [[C]], i32 2
; ZEROTHRESH-NEXT:    [[C3:%.*]] = extractelement <4 x i32> [[C]], i32 3
; ZEROTHRESH-NEXT:    [[RA:%.*]] = insertelement <4 x i32> undef, i32 [[C0]], i32 0
; ZEROTHRESH-NEXT:    [[RB:%.*]] = insertelement <4 x i32> [[RA]], i32 [[C1]], i32 1
; ZEROTHRESH-NEXT:    [[RC:%.*]] = insertelement <4 x i32> [[RB]], i32 [[C2]], i32 2
; ZEROTHRESH-NEXT:    [[RD:%.*]] = insertelement <4 x i32> [[RC]], i32 [[C3]], i32 3
; ZEROTHRESH-NEXT:    ret <4 x i32> [[RD]]
;
  %c0 = extractelement <4 x i32> %c, i32 0
  %c1 = extractelement <4 x i32> %c, i32 1
  %c2 = extractelement <4 x i32> %c, i32 2
  %c3 = extractelement <4 x i32> %c, i32 3
  %ra = insertelement <4 x i32> undef, i32 %c0, i32 0
  %rb = insertelement <4 x i32> %ra, i32 %c1, i32 1
  %rc = insertelement <4 x i32> %rb, i32 %c2, i32 2
  %rd = insertelement <4 x i32> %rc, i32 %c3, i32 3
  ret <4 x i32> %rd
}

define <2 x float> @simple_select_v2(<2 x float> %a, <2 x float> %b, <2 x i32> %c) #0 {
; CHECK-LABEL: @simple_select_v2(
; CHECK-NEXT:    [[TMP1:%.*]] = icmp ne <2 x i32> [[C:%.*]], zeroinitializer
; CHECK-NEXT:    [[TMP2:%.*]] = select <2 x i1> [[TMP1]], <2 x float> [[A:%.*]], <2 x float> [[B:%.*]]
; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x float> [[TMP2]], i32 0
; CHECK-NEXT:    [[RA:%.*]] = insertelement <2 x float> undef, float [[TMP3]], i32 0
; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <2 x float> [[TMP2]], i32 1
; CHECK-NEXT:    [[RB:%.*]] = insertelement <2 x float> [[RA]], float [[TMP4]], i32 1
; CHECK-NEXT:    ret <2 x float> [[RB]]
;
; ZEROTHRESH-LABEL: @simple_select_v2(
; ZEROTHRESH-NEXT:    [[TMP1:%.*]] = icmp ne <2 x i32> [[C:%.*]], zeroinitializer
; ZEROTHRESH-NEXT:    [[TMP2:%.*]] = select <2 x i1> [[TMP1]], <2 x float> [[A:%.*]], <2 x float> [[B:%.*]]
; ZEROTHRESH-NEXT:    [[TMP3:%.*]] = extractelement <2 x float> [[TMP2]], i32 0
; ZEROTHRESH-NEXT:    [[RA:%.*]] = insertelement <2 x float> undef, float [[TMP3]], i32 0
; ZEROTHRESH-NEXT:    [[TMP4:%.*]] = extractelement <2 x float> [[TMP2]], i32 1
; ZEROTHRESH-NEXT:    [[RB:%.*]] = insertelement <2 x float> [[RA]], float [[TMP4]], i32 1
; ZEROTHRESH-NEXT:    ret <2 x float> [[RB]]
;
  %c0 = extractelement <2 x i32> %c, i32 0
  %c1 = extractelement <2 x i32> %c, i32 1
  %a0 = extractelement <2 x float> %a, i32 0
  %a1 = extractelement <2 x float> %a, i32 1
  %b0 = extractelement <2 x float> %b, i32 0
  %b1 = extractelement <2 x float> %b, i32 1
  %cmp0 = icmp ne i32 %c0, 0
  %cmp1 = icmp ne i32 %c1, 0
  %s0 = select i1 %cmp0, float %a0, float %b0
  %s1 = select i1 %cmp1, float %a1, float %b1
  %ra = insertelement <2 x float> undef, float %s0, i32 0
  %rb = insertelement <2 x float> %ra, float %s1, i32 1
  ret <2 x float> %rb
}

; Make sure when we construct partial vectors, we don't keep
; re-visiting the insertelement chains starting with undef
; (low cost threshold needed to force this to happen)
define <4 x float> @simple_select_partial_vector(<4 x float> %a, <4 x float> %b, <4 x i32> %c) #0 {
; CHECK-LABEL: @simple_select_partial_vector(
; CHECK-NEXT:    [[C0:%.*]] = extractelement <4 x i32> [[C:%.*]], i32 0
; CHECK-NEXT:    [[C1:%.*]] = extractelement <4 x i32> [[C]], i32 1
; CHECK-NEXT:    [[A0:%.*]] = extractelement <4 x float> [[A:%.*]], i32 0
; CHECK-NEXT:    [[A1:%.*]] = extractelement <4 x float> [[A]], i32 1
; CHECK-NEXT:    [[B0:%.*]] = extractelement <4 x float> [[B:%.*]], i32 0
; CHECK-NEXT:    [[B1:%.*]] = extractelement <4 x float> [[B]], i32 1
; CHECK-NEXT:    [[TMP1:%.*]] = insertelement <2 x i32> undef, i32 [[C0]], i32 0
; CHECK-NEXT:    [[TMP2:%.*]] = insertelement <2 x i32> [[TMP1]], i32 [[C1]], i32 1
; CHECK-NEXT:    [[TMP3:%.*]] = icmp ne <2 x i32> [[TMP2]], zeroinitializer
; CHECK-NEXT:    [[TMP4:%.*]] = insertelement <2 x float> undef, float [[A0]], i32 0
; CHECK-NEXT:    [[TMP5:%.*]] = insertelement <2 x float> [[TMP4]], float [[A1]], i32 1
; CHECK-NEXT:    [[TMP6:%.*]] = insertelement <2 x float> undef, float [[B0]], i32 0
; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x float> [[TMP6]], float [[B1]], i32 1
; CHECK-NEXT:    [[TMP8:%.*]] = select <2 x i1> [[TMP3]], <2 x float> [[TMP5]], <2 x float> [[TMP7]]
; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <2 x float> [[TMP8]], i32 0
; CHECK-NEXT:    [[RA:%.*]] = insertelement <4 x float> undef, float [[TMP9]], i32 0
; CHECK-NEXT:    [[TMP10:%.*]] = extractelement <2 x float> [[TMP8]], i32 1
; CHECK-NEXT:    [[RB:%.*]] = insertelement <4 x float> [[RA]], float [[TMP10]], i32 1
; CHECK-NEXT:    ret <4 x float> [[RB]]
;
; ZEROTHRESH-LABEL: @simple_select_partial_vector(
; ZEROTHRESH-NEXT:    [[C0:%.*]] = extractelement <4 x i32> [[C:%.*]], i32 0
; ZEROTHRESH-NEXT:    [[C1:%.*]] = extractelement <4 x i32> [[C]], i32 1
; ZEROTHRESH-NEXT:    [[A0:%.*]] = extractelement <4 x float> [[A:%.*]], i32 0
; ZEROTHRESH-NEXT:    [[A1:%.*]] = extractelement <4 x float> [[A]], i32 1
; ZEROTHRESH-NEXT:    [[B0:%.*]] = extractelement <4 x float> [[B:%.*]], i32 0
; ZEROTHRESH-NEXT:    [[B1:%.*]] = extractelement <4 x float> [[B]], i32 1
; ZEROTHRESH-NEXT:    [[TMP1:%.*]] = insertelement <2 x i32> undef, i32 [[C0]], i32 0
; ZEROTHRESH-NEXT:    [[TMP2:%.*]] = insertelement <2 x i32> [[TMP1]], i32 [[C1]], i32 1
; ZEROTHRESH-NEXT:    [[TMP3:%.*]] = icmp ne <2 x i32> [[TMP2]], zeroinitializer
; ZEROTHRESH-NEXT:    [[TMP4:%.*]] = insertelement <2 x float> undef, float [[A0]], i32 0
; ZEROTHRESH-NEXT:    [[TMP5:%.*]] = insertelement <2 x float> [[TMP4]], float [[A1]], i32 1
; ZEROTHRESH-NEXT:    [[TMP6:%.*]] = insertelement <2 x float> undef, float [[B0]], i32 0
; ZEROTHRESH-NEXT:    [[TMP7:%.*]] = insertelement <2 x float> [[TMP6]], float [[B1]], i32 1
; ZEROTHRESH-NEXT:    [[TMP8:%.*]] = select <2 x i1> [[TMP3]], <2 x float> [[TMP5]], <2 x float> [[TMP7]]
; ZEROTHRESH-NEXT:    [[TMP9:%.*]] = extractelement <2 x float> [[TMP8]], i32 0
; ZEROTHRESH-NEXT:    [[RA:%.*]] = insertelement <4 x float> undef, float [[TMP9]], i32 0
; ZEROTHRESH-NEXT:    [[TMP10:%.*]] = extractelement <2 x float> [[TMP8]], i32 1
; ZEROTHRESH-NEXT:    [[RB:%.*]] = insertelement <4 x float> [[RA]], float [[TMP10]], i32 1
; ZEROTHRESH-NEXT:    ret <4 x float> [[RB]]
;
  %c0 = extractelement <4 x i32> %c, i32 0
  %c1 = extractelement <4 x i32> %c, i32 1
  %a0 = extractelement <4 x float> %a, i32 0
  %a1 = extractelement <4 x float> %a, i32 1
  %b0 = extractelement <4 x float> %b, i32 0
  %b1 = extractelement <4 x float> %b, i32 1
  %1 = insertelement <2 x i32> undef, i32 %c0, i32 0
  %2 = insertelement <2 x i32> %1, i32 %c1, i32 1
  %3 = icmp ne <2 x i32> %2, zeroinitializer
  %4 = insertelement <2 x float> undef, float %a0, i32 0
  %5 = insertelement <2 x float> %4, float %a1, i32 1
  %6 = insertelement <2 x float> undef, float %b0, i32 0
  %7 = insertelement <2 x float> %6, float %b1, i32 1
  %8 = select <2 x i1> %3, <2 x float> %5, <2 x float> %7
  %9 = extractelement <2 x float> %8, i32 0
  %ra = insertelement <4 x float> undef, float %9, i32 0
  %10 = extractelement <2 x float> %8, i32 1
  %rb = insertelement <4 x float> %ra, float %10, i32 1
  ret <4 x float> %rb
}

; Make sure that vectorization happens even if insertelements operations
; must be rescheduled. The case here is from compiling Julia.
define <4 x float> @reschedule_extract(<4 x float> %a, <4 x float> %b) {
; CHECK-LABEL: @reschedule_extract(
; CHECK-NEXT:    [[TMP1:%.*]] = fadd <4 x float> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[TMP1]], i32 0
; CHECK-NEXT:    [[V0:%.*]] = insertelement <4 x float> undef, float [[TMP2]], i32 0
; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[TMP1]], i32 1
; CHECK-NEXT:    [[V1:%.*]] = insertelement <4 x float> [[V0]], float [[TMP3]], i32 1
; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[TMP1]], i32 2
; CHECK-NEXT:    [[V2:%.*]] = insertelement <4 x float> [[V1]], float [[TMP4]], i32 2
; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[TMP1]], i32 3
; CHECK-NEXT:    [[V3:%.*]] = insertelement <4 x float> [[V2]], float [[TMP5]], i32 3
; CHECK-NEXT:    ret <4 x float> [[V3]]
;
; ZEROTHRESH-LABEL: @reschedule_extract(
; ZEROTHRESH-NEXT:    [[TMP1:%.*]] = fadd <4 x float> [[A:%.*]], [[B:%.*]]
; ZEROTHRESH-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[TMP1]], i32 0
; ZEROTHRESH-NEXT:    [[V0:%.*]] = insertelement <4 x float> undef, float [[TMP2]], i32 0
; ZEROTHRESH-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[TMP1]], i32 1
; ZEROTHRESH-NEXT:    [[V1:%.*]] = insertelement <4 x float> [[V0]], float [[TMP3]], i32 1
; ZEROTHRESH-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[TMP1]], i32 2
; ZEROTHRESH-NEXT:    [[V2:%.*]] = insertelement <4 x float> [[V1]], float [[TMP4]], i32 2
; ZEROTHRESH-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[TMP1]], i32 3
; ZEROTHRESH-NEXT:    [[V3:%.*]] = insertelement <4 x float> [[V2]], float [[TMP5]], i32 3
; ZEROTHRESH-NEXT:    ret <4 x float> [[V3]]
;
  %a0 = extractelement <4 x float> %a, i32 0
  %b0 = extractelement <4 x float> %b, i32 0
  %c0 = fadd float %a0, %b0
  %v0 = insertelement <4 x float> undef, float %c0, i32 0
  %a1 = extractelement <4 x float> %a, i32 1
  %b1 = extractelement <4 x float> %b, i32 1
  %c1 = fadd float %a1, %b1
  %v1 = insertelement <4 x float> %v0, float %c1, i32 1
  %a2 = extractelement <4 x float> %a, i32 2
  %b2 = extractelement <4 x float> %b, i32 2
  %c2 = fadd float %a2, %b2
  %v2 = insertelement <4 x float> %v1, float %c2, i32 2
  %a3 = extractelement <4 x float> %a, i32 3
  %b3 = extractelement <4 x float> %b, i32 3
  %c3 = fadd float %a3, %b3
  %v3 = insertelement <4 x float> %v2, float %c3, i32 3
  ret <4 x float> %v3
}

; Check that cost model for vectorization takes credit for
; instructions that are erased.
define <4 x float> @take_credit(<4 x float> %a, <4 x float> %b) {
; CHECK-LABEL: @take_credit(
; CHECK-NEXT:    [[TMP1:%.*]] = fadd <4 x float> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[TMP1]], i32 0
; CHECK-NEXT:    [[V0:%.*]] = insertelement <4 x float> undef, float [[TMP2]], i32 0
; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[TMP1]], i32 1
; CHECK-NEXT:    [[V1:%.*]] = insertelement <4 x float> [[V0]], float [[TMP3]], i32 1
; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[TMP1]], i32 2
; CHECK-NEXT:    [[V2:%.*]] = insertelement <4 x float> [[V1]], float [[TMP4]], i32 2
; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[TMP1]], i32 3
; CHECK-NEXT:    [[V3:%.*]] = insertelement <4 x float> [[V2]], float [[TMP5]], i32 3
; CHECK-NEXT:    ret <4 x float> [[V3]]
;
; ZEROTHRESH-LABEL: @take_credit(
; ZEROTHRESH-NEXT:    [[TMP1:%.*]] = fadd <4 x float> [[A:%.*]], [[B:%.*]]
; ZEROTHRESH-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[TMP1]], i32 0
; ZEROTHRESH-NEXT:    [[V0:%.*]] = insertelement <4 x float> undef, float [[TMP2]], i32 0
; ZEROTHRESH-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[TMP1]], i32 1
; ZEROTHRESH-NEXT:    [[V1:%.*]] = insertelement <4 x float> [[V0]], float [[TMP3]], i32 1
; ZEROTHRESH-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[TMP1]], i32 2
; ZEROTHRESH-NEXT:    [[V2:%.*]] = insertelement <4 x float> [[V1]], float [[TMP4]], i32 2
; ZEROTHRESH-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[TMP1]], i32 3
; ZEROTHRESH-NEXT:    [[V3:%.*]] = insertelement <4 x float> [[V2]], float [[TMP5]], i32 3
; ZEROTHRESH-NEXT:    ret <4 x float> [[V3]]
;
  %a0 = extractelement <4 x float> %a, i32 0
  %b0 = extractelement <4 x float> %b, i32 0
  %c0 = fadd float %a0, %b0
  %a1 = extractelement <4 x float> %a, i32 1
  %b1 = extractelement <4 x float> %b, i32 1
  %c1 = fadd float %a1, %b1
  %a2 = extractelement <4 x float> %a, i32 2
  %b2 = extractelement <4 x float> %b, i32 2
  %c2 = fadd float %a2, %b2
  %a3 = extractelement <4 x float> %a, i32 3
  %b3 = extractelement <4 x float> %b, i32 3
  %c3 = fadd float %a3, %b3
  %v0 = insertelement <4 x float> undef, float %c0, i32 0
  %v1 = insertelement <4 x float> %v0, float %c1, i32 1
  %v2 = insertelement <4 x float> %v1, float %c2, i32 2
  %v3 = insertelement <4 x float> %v2, float %c3, i32 3
  ret <4 x float> %v3
}

; Make sure we handle multiple trees that feed one build vector correctly.
define <4 x double> @multi_tree(double %w, double %x, double %y, double %z) {
; CHECK-LABEL: @multi_tree(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TMP0:%.*]] = insertelement <4 x double> undef, double [[W:%.*]], i32 0
; CHECK-NEXT:    [[TMP1:%.*]] = insertelement <4 x double> [[TMP0]], double [[X:%.*]], i32 1
; CHECK-NEXT:    [[TMP2:%.*]] = insertelement <4 x double> [[TMP1]], double [[Y:%.*]], i32 2
; CHECK-NEXT:    [[TMP3:%.*]] = insertelement <4 x double> [[TMP2]], double [[Z:%.*]], i32 3
; CHECK-NEXT:    [[TMP4:%.*]] = fadd <4 x double> [[TMP3]], <double 0.000000e+00, double 1.000000e+00, double 2.000000e+00, double 3.000000e+00>
; CHECK-NEXT:    [[TMP5:%.*]] = fmul <4 x double> [[TMP4]], <double 1.000000e+00, double 1.000000e+00, double 1.000000e+00, double 1.000000e+00>
; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x double> [[TMP5]], i32 0
; CHECK-NEXT:    [[I1:%.*]] = insertelement <4 x double> undef, double [[TMP6]], i32 3
; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <4 x double> [[TMP5]], i32 1
; CHECK-NEXT:    [[I2:%.*]] = insertelement <4 x double> [[I1]], double [[TMP7]], i32 2
; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <4 x double> [[TMP5]], i32 2
; CHECK-NEXT:    [[I3:%.*]] = insertelement <4 x double> [[I2]], double [[TMP8]], i32 1
; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <4 x double> [[TMP5]], i32 3
; CHECK-NEXT:    [[I4:%.*]] = insertelement <4 x double> [[I3]], double [[TMP9]], i32 0
; CHECK-NEXT:    ret <4 x double> [[I4]]
;
; ZEROTHRESH-LABEL: @multi_tree(
; ZEROTHRESH-NEXT:  entry:
; ZEROTHRESH-NEXT:    [[TMP0:%.*]] = insertelement <4 x double> undef, double [[W:%.*]], i32 0
; ZEROTHRESH-NEXT:    [[TMP1:%.*]] = insertelement <4 x double> [[TMP0]], double [[X:%.*]], i32 1
; ZEROTHRESH-NEXT:    [[TMP2:%.*]] = insertelement <4 x double> [[TMP1]], double [[Y:%.*]], i32 2
; ZEROTHRESH-NEXT:    [[TMP3:%.*]] = insertelement <4 x double> [[TMP2]], double [[Z:%.*]], i32 3
; ZEROTHRESH-NEXT:    [[TMP4:%.*]] = fadd <4 x double> [[TMP3]], <double 0.000000e+00, double 1.000000e+00, double 2.000000e+00, double 3.000000e+00>
; ZEROTHRESH-NEXT:    [[TMP5:%.*]] = fmul <4 x double> [[TMP4]], <double 1.000000e+00, double 1.000000e+00, double 1.000000e+00, double 1.000000e+00>
; ZEROTHRESH-NEXT:    [[TMP6:%.*]] = extractelement <4 x double> [[TMP5]], i32 0
; ZEROTHRESH-NEXT:    [[I1:%.*]] = insertelement <4 x double> undef, double [[TMP6]], i32 3
; ZEROTHRESH-NEXT:    [[TMP7:%.*]] = extractelement <4 x double> [[TMP5]], i32 1
; ZEROTHRESH-NEXT:    [[I2:%.*]] = insertelement <4 x double> [[I1]], double [[TMP7]], i32 2
; ZEROTHRESH-NEXT:    [[TMP8:%.*]] = extractelement <4 x double> [[TMP5]], i32 2
; ZEROTHRESH-NEXT:    [[I3:%.*]] = insertelement <4 x double> [[I2]], double [[TMP8]], i32 1
; ZEROTHRESH-NEXT:    [[TMP9:%.*]] = extractelement <4 x double> [[TMP5]], i32 3
; ZEROTHRESH-NEXT:    [[I4:%.*]] = insertelement <4 x double> [[I3]], double [[TMP9]], i32 0
; ZEROTHRESH-NEXT:    ret <4 x double> [[I4]]
;
entry:
  %t0 = fadd double %w , 0.000000e+00
  %t1 = fadd double %x , 1.000000e+00
  %t2 = fadd double %y , 2.000000e+00
  %t3 = fadd double %z , 3.000000e+00
  %t4 = fmul double %t0, 1.000000e+00
  %i1 = insertelement <4 x double> undef, double %t4, i32 3
  %t5 = fmul double %t1, 1.000000e+00
  %i2 = insertelement <4 x double> %i1, double %t5, i32 2
  %t6 = fmul double %t2, 1.000000e+00
  %i3 = insertelement <4 x double> %i2, double %t6, i32 1
  %t7 = fmul double %t3, 1.000000e+00
  %i4 = insertelement <4 x double> %i3, double %t7, i32 0
  ret <4 x double> %i4
}

define <8 x float> @_vadd256(<8 x float> %a, <8 x float> %b) local_unnamed_addr #0 {
; CHECK-LABEL: @_vadd256(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TMP0:%.*]] = fadd <8 x float> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <8 x float> [[TMP0]], i32 0
; CHECK-NEXT:    [[VECINIT_I:%.*]] = insertelement <8 x float> undef, float [[TMP1]], i32 0
; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <8 x float> [[TMP0]], i32 1
; CHECK-NEXT:    [[VECINIT1_I:%.*]] = insertelement <8 x float> [[VECINIT_I]], float [[TMP2]], i32 1
; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <8 x float> [[TMP0]], i32 2
; CHECK-NEXT:    [[VECINIT2_I:%.*]] = insertelement <8 x float> [[VECINIT1_I]], float [[TMP3]], i32 2
; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <8 x float> [[TMP0]], i32 3
; CHECK-NEXT:    [[VECINIT3_I:%.*]] = insertelement <8 x float> [[VECINIT2_I]], float [[TMP4]], i32 3
; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x float> [[TMP0]], i32 4
; CHECK-NEXT:    [[VECINIT4_I:%.*]] = insertelement <8 x float> [[VECINIT3_I]], float [[TMP5]], i32 4
; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x float> [[TMP0]], i32 5
; CHECK-NEXT:    [[VECINIT5_I:%.*]] = insertelement <8 x float> [[VECINIT4_I]], float [[TMP6]], i32 5
; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <8 x float> [[TMP0]], i32 6
; CHECK-NEXT:    [[VECINIT6_I:%.*]] = insertelement <8 x float> [[VECINIT5_I]], float [[TMP7]], i32 6
; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <8 x float> [[TMP0]], i32 7
; CHECK-NEXT:    [[VECINIT7_I:%.*]] = insertelement <8 x float> [[VECINIT6_I]], float [[TMP8]], i32 7
; CHECK-NEXT:    ret <8 x float> [[VECINIT7_I]]
;
; ZEROTHRESH-LABEL: @_vadd256(
; ZEROTHRESH-NEXT:  entry:
; ZEROTHRESH-NEXT:    [[TMP0:%.*]] = fadd <8 x float> [[A:%.*]], [[B:%.*]]
; ZEROTHRESH-NEXT:    [[TMP1:%.*]] = extractelement <8 x float> [[TMP0]], i32 0
; ZEROTHRESH-NEXT:    [[VECINIT_I:%.*]] = insertelement <8 x float> undef, float [[TMP1]], i32 0
; ZEROTHRESH-NEXT:    [[TMP2:%.*]] = extractelement <8 x float> [[TMP0]], i32 1
; ZEROTHRESH-NEXT:    [[VECINIT1_I:%.*]] = insertelement <8 x float> [[VECINIT_I]], float [[TMP2]], i32 1
; ZEROTHRESH-NEXT:    [[TMP3:%.*]] = extractelement <8 x float> [[TMP0]], i32 2
; ZEROTHRESH-NEXT:    [[VECINIT2_I:%.*]] = insertelement <8 x float> [[VECINIT1_I]], float [[TMP3]], i32 2
; ZEROTHRESH-NEXT:    [[TMP4:%.*]] = extractelement <8 x float> [[TMP0]], i32 3
; ZEROTHRESH-NEXT:    [[VECINIT3_I:%.*]] = insertelement <8 x float> [[VECINIT2_I]], float [[TMP4]], i32 3
; ZEROTHRESH-NEXT:    [[TMP5:%.*]] = extractelement <8 x float> [[TMP0]], i32 4
; ZEROTHRESH-NEXT:    [[VECINIT4_I:%.*]] = insertelement <8 x float> [[VECINIT3_I]], float [[TMP5]], i32 4
; ZEROTHRESH-NEXT:    [[TMP6:%.*]] = extractelement <8 x float> [[TMP0]], i32 5
; ZEROTHRESH-NEXT:    [[VECINIT5_I:%.*]] = insertelement <8 x float> [[VECINIT4_I]], float [[TMP6]], i32 5
; ZEROTHRESH-NEXT:    [[TMP7:%.*]] = extractelement <8 x float> [[TMP0]], i32 6
; ZEROTHRESH-NEXT:    [[VECINIT6_I:%.*]] = insertelement <8 x float> [[VECINIT5_I]], float [[TMP7]], i32 6
; ZEROTHRESH-NEXT:    [[TMP8:%.*]] = extractelement <8 x float> [[TMP0]], i32 7
; ZEROTHRESH-NEXT:    [[VECINIT7_I:%.*]] = insertelement <8 x float> [[VECINIT6_I]], float [[TMP8]], i32 7
; ZEROTHRESH-NEXT:    ret <8 x float> [[VECINIT7_I]]
;
  entry:
  %vecext = extractelement <8 x float> %a, i32 0
  %vecext1 = extractelement <8 x float> %b, i32 0
  %add = fadd float %vecext, %vecext1
  %vecext2 = extractelement <8 x float> %a, i32 1
  %vecext3 = extractelement <8 x float> %b, i32 1
  %add4 = fadd float %vecext2, %vecext3
  %vecext5 = extractelement <8 x float> %a, i32 2
  %vecext6 = extractelement <8 x float> %b, i32 2
  %add7 = fadd float %vecext5, %vecext6
  %vecext8 = extractelement <8 x float> %a, i32 3
  %vecext9 = extractelement <8 x float> %b, i32 3
  %add10 = fadd float %vecext8, %vecext9
  %vecext11 = extractelement <8 x float> %a, i32 4
  %vecext12 = extractelement <8 x float> %b, i32 4
  %add13 = fadd float %vecext11, %vecext12
  %vecext14 = extractelement <8 x float> %a, i32 5
  %vecext15 = extractelement <8 x float> %b, i32 5
  %add16 = fadd float %vecext14, %vecext15
  %vecext17 = extractelement <8 x float> %a, i32 6
  %vecext18 = extractelement <8 x float> %b, i32 6
  %add19 = fadd float %vecext17, %vecext18
  %vecext20 = extractelement <8 x float> %a, i32 7
  %vecext21 = extractelement <8 x float> %b, i32 7
  %add22 = fadd float %vecext20, %vecext21
  %vecinit.i = insertelement <8 x float> undef, float %add, i32 0
  %vecinit1.i = insertelement <8 x float> %vecinit.i, float %add4, i32 1
  %vecinit2.i = insertelement <8 x float> %vecinit1.i, float %add7, i32 2
  %vecinit3.i = insertelement <8 x float> %vecinit2.i, float %add10, i32 3
  %vecinit4.i = insertelement <8 x float> %vecinit3.i, float %add13, i32 4
  %vecinit5.i = insertelement <8 x float> %vecinit4.i, float %add16, i32 5
  %vecinit6.i = insertelement <8 x float> %vecinit5.i, float %add19, i32 6
  %vecinit7.i = insertelement <8 x float> %vecinit6.i, float %add22, i32 7
  ret <8 x float> %vecinit7.i
}

attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }