1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -S -passes=loop-unroll -verify-loop-info | FileCheck %s
3 ; RUN: opt < %s -S -passes='require<opt-remark-emit>,loop-unroll,verify<loops>' | FileCheck %s
5 ; Unit tests for LoopInfo::markAsRemoved.
7 declare i1 @check() nounwind
9 ; Ensure that tail->inner is removed and rely on verify-loopinfo to
11 define void @skiplevelexit() nounwind {
12 ; CHECK-LABEL: @skiplevelexit(
14 ; CHECK-NEXT: br label [[OUTER:%.*]]
16 ; CHECK-NEXT: br label [[INNER:%.*]]
18 ; CHECK-NEXT: [[TMP0:%.*]] = call zeroext i1 @check()
19 ; CHECK-NEXT: br i1 true, label [[OUTER_BACKEDGE:%.*]], label [[TAIL:%.*]]
21 ; CHECK-NEXT: ret void
22 ; CHECK: outer.backedge:
23 ; CHECK-NEXT: br label [[OUTER]]
32 %iv = phi i32 [ 0, %outer ], [ %inc, %tail ]
34 call zeroext i1 @check()
35 br i1 true, label %outer.backedge, label %tail
38 br i1 false, label %inner, label %exit
47 ; Remove the middle loop of a triply nested loop tree.
48 ; Ensure that only the middle loop is removed and rely on verify-loopinfo to
50 define void @unloopNested() {
51 ; CHECK-LABEL: @unloopNested(
53 ; CHECK-NEXT: br label [[WHILE_COND_OUTER:%.*]]
54 ; CHECK: while.cond.outer:
55 ; CHECK-NEXT: br label [[WHILE_COND:%.*]]
57 ; CHECK-NEXT: [[CMP:%.*]] = call zeroext i1 @check()
58 ; CHECK-NEXT: br i1 [[CMP]], label [[WHILE_BODY:%.*]], label [[WHILE_END:%.*]]
60 ; CHECK-NEXT: [[CMP3:%.*]] = call zeroext i1 @check()
61 ; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
63 ; CHECK-NEXT: br label [[RETURN:%.*]]
65 ; CHECK-NEXT: [[CMP_I48:%.*]] = call zeroext i1 @check()
66 ; CHECK-NEXT: br i1 [[CMP_I48]], label [[IF_THEN_I:%.*]], label [[IF_ELSE20_I:%.*]]
68 ; CHECK-NEXT: [[CMP8_I:%.*]] = call zeroext i1 @check()
69 ; CHECK-NEXT: br i1 [[CMP8_I]], label [[MERGE:%.*]], label [[IF_ELSE_I:%.*]]
71 ; CHECK-NEXT: br label [[MERGE]]
73 ; CHECK-NEXT: [[CMP25_I:%.*]] = call zeroext i1 @check()
74 ; CHECK-NEXT: br i1 [[CMP25_I]], label [[MERGE]], label [[IF_ELSE28_I:%.*]]
76 ; CHECK-NEXT: br label [[MERGE]]
78 ; CHECK-NEXT: br label [[WHILE_COND2_I:%.*]]
79 ; CHECK: while.cond2.i:
80 ; CHECK-NEXT: [[CMP_I:%.*]] = call zeroext i1 @check()
81 ; CHECK-NEXT: br i1 [[CMP_I]], label [[WHILE_COND2_BACKEDGE_I:%.*]], label [[WHILE_END_I:%.*]]
82 ; CHECK: while.cond2.backedge.i:
83 ; CHECK-NEXT: br label [[WHILE_COND2_I]]
85 ; CHECK-NEXT: [[CMP1114_I:%.*]] = call zeroext i1 @check()
86 ; CHECK-NEXT: br i1 [[CMP1114_I]], label [[WHILE_BODY12_LR_PH_I:%.*]], label [[WHILE_END14_I:%.*]]
87 ; CHECK: while.body12.lr.ph.i:
88 ; CHECK-NEXT: br label [[WHILE_END14_I]]
89 ; CHECK: while.end14.i:
90 ; CHECK-NEXT: [[CALL15_I:%.*]] = call zeroext i1 @check()
91 ; CHECK-NEXT: br i1 [[CALL15_I]], label [[IF_END_I:%.*]], label [[EXIT:%.*]]
93 ; CHECK-NEXT: br label [[WHILE_COND2_BACKEDGE_I]]
95 ; CHECK-NEXT: br label [[WHILE_COND_OUTER]]
97 ; CHECK-NEXT: br label [[RETURN]]
99 ; CHECK-NEXT: ret void
102 br label %while.cond.outer
108 %cmp = call zeroext i1 @check()
109 br i1 %cmp, label %while.body, label %while.end
112 %cmp3 = call zeroext i1 @check()
113 br i1 %cmp3, label %if.then, label %if.end
119 %cmp.i48 = call zeroext i1 @check()
120 br i1 %cmp.i48, label %if.then.i, label %if.else20.i
123 %cmp8.i = call zeroext i1 @check()
124 br i1 %cmp8.i, label %merge, label %if.else.i
130 %cmp25.i = call zeroext i1 @check()
131 br i1 %cmp25.i, label %merge, label %if.else28.i
137 br label %while.cond2.i
140 %cmp.i = call zeroext i1 @check()
141 br i1 %cmp.i, label %while.cond2.backedge.i, label %while.end.i
143 while.cond2.backedge.i:
144 br label %while.cond2.i
147 %cmp1114.i = call zeroext i1 @check()
148 br i1 %cmp1114.i, label %while.body12.lr.ph.i, label %while.end14.i
150 while.body12.lr.ph.i:
151 br label %while.end14.i
154 %call15.i = call zeroext i1 @check()
155 br i1 %call15.i, label %if.end.i, label %exit
158 br label %while.cond2.backedge.i
161 br i1 false, label %while.cond, label %if.else
164 br label %while.cond.outer
173 ; Remove the middle loop of a deeply nested loop tree.
174 ; Ensure that only the middle loop is removed and rely on verify-loopinfo to
177 ; This test must be disabled until trip count computation can be optimized...
178 ; rdar:14038809 [SCEV]: Optimize trip count computation for multi-exit loops.
179 define void @unloopDeepNested() nounwind {
180 ; CHECK-LABEL: @unloopDeepNested(
181 ; CHECK-NEXT: for.cond8.preheader.i:
182 ; CHECK-NEXT: [[CMP113_I:%.*]] = call zeroext i1 @check()
183 ; CHECK-NEXT: br i1 [[CMP113_I]], label [[MAKE_DATA_EXIT:%.*]], label [[FOR_BODY13_LR_PH_I:%.*]]
184 ; CHECK: for.body13.lr.ph.i:
185 ; CHECK-NEXT: br label [[MAKE_DATA_EXIT]]
186 ; CHECK: make_data.exit:
187 ; CHECK-NEXT: br label [[WHILE_COND_OUTER_OUTER:%.*]]
188 ; CHECK: while.cond.outer.outer:
189 ; CHECK-NEXT: br label [[WHILE_COND_OUTER:%.*]]
190 ; CHECK: while.cond.outer:
191 ; CHECK-NEXT: br label [[WHILE_COND:%.*]]
193 ; CHECK-NEXT: br label [[WHILE_COND_OUTER_I:%.*]]
194 ; CHECK: while.cond.outer.i:
195 ; CHECK-NEXT: [[TMP192_PH_I:%.*]] = call zeroext i1 @check()
196 ; CHECK-NEXT: br i1 [[TMP192_PH_I]], label [[WHILE_COND_OUTER_SPLIT_US_I:%.*]], label [[WHILE_BODY_LOOPEXIT:%.*]]
197 ; CHECK: while.cond.outer.split.us.i:
198 ; CHECK-NEXT: br label [[WHILE_COND_US_I:%.*]]
199 ; CHECK: while.cond.us.i:
200 ; CHECK-NEXT: [[CMP_US_I:%.*]] = call zeroext i1 @check()
201 ; CHECK-NEXT: br i1 [[CMP_US_I]], label [[NEXT_DATA_EXIT:%.*]], label [[WHILE_BODY_US_I:%.*]]
202 ; CHECK: while.body.us.i:
203 ; CHECK-NEXT: [[CMP7_US_I:%.*]] = call zeroext i1 @check()
204 ; CHECK-NEXT: br i1 [[CMP7_US_I]], label [[IF_THEN_US_I:%.*]], label [[IF_ELSE_I:%.*]]
205 ; CHECK: if.then.us.i:
206 ; CHECK-NEXT: br label [[WHILE_COND_US_I]]
208 ; CHECK-NEXT: br label [[WHILE_COND_OUTER_I]]
209 ; CHECK: next_data.exit:
210 ; CHECK-NEXT: [[TMP192_PH_I_LCSSA28:%.*]] = call zeroext i1 @check()
211 ; CHECK-NEXT: br i1 [[TMP192_PH_I_LCSSA28]], label [[WHILE_END:%.*]], label [[WHILE_BODY:%.*]]
212 ; CHECK: while.body.loopexit:
213 ; CHECK-NEXT: br label [[WHILE_BODY]]
215 ; CHECK-NEXT: br label [[WHILE_COND_I:%.*]]
216 ; CHECK: while.cond.i:
217 ; CHECK-NEXT: [[CMP_I:%.*]] = call zeroext i1 @check()
218 ; CHECK-NEXT: br i1 [[CMP_I]], label [[VALID_DATA_EXIT:%.*]], label [[WHILE_BODY_I:%.*]]
219 ; CHECK: while.body.i:
220 ; CHECK-NEXT: [[CMP7_I:%.*]] = call zeroext i1 @check()
221 ; CHECK-NEXT: br i1 [[CMP7_I]], label [[VALID_DATA_EXIT]], label [[IF_END_I:%.*]]
223 ; CHECK-NEXT: br label [[WHILE_COND_I]]
224 ; CHECK: valid_data.exit:
225 ; CHECK-NEXT: [[CMP:%.*]] = call zeroext i1 @check()
226 ; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN12:%.*]], label [[IF_END:%.*]]
228 ; CHECK-NEXT: br label [[IF_END]]
230 ; CHECK-NEXT: [[TOBOOL3_I:%.*]] = call zeroext i1 @check()
231 ; CHECK-NEXT: br i1 [[TOBOOL3_I]], label [[COPY_DATA_EXIT:%.*]], label [[WHILE_BODY_LR_PH_I:%.*]]
232 ; CHECK: while.body.lr.ph.i:
233 ; CHECK-NEXT: br label [[COPY_DATA_EXIT]]
234 ; CHECK: copy_data.exit:
235 ; CHECK-NEXT: [[CMP38:%.*]] = call zeroext i1 @check()
236 ; CHECK-NEXT: br i1 [[CMP38]], label [[IF_THEN39:%.*]], label [[WHILE_COND_OUTER]]
238 ; CHECK-NEXT: [[CMP5_I:%.*]] = call zeroext i1 @check()
239 ; CHECK-NEXT: br i1 [[CMP5_I]], label [[WHILE_COND_OUTER_OUTER_BACKEDGE:%.*]], label [[FOR_COND8_PREHEADER_I8_THREAD:%.*]]
240 ; CHECK: for.cond8.preheader.i8.thread:
241 ; CHECK-NEXT: br label [[WHILE_COND_OUTER_OUTER_BACKEDGE]]
242 ; CHECK: while.cond.outer.outer.backedge:
243 ; CHECK-NEXT: br label [[WHILE_COND_OUTER_OUTER]]
245 ; CHECK-NEXT: ret void
247 for.cond8.preheader.i:
248 %cmp113.i = call zeroext i1 @check()
249 br i1 %cmp113.i, label %make_data.exit, label %for.body13.lr.ph.i
252 br label %make_data.exit
255 br label %while.cond.outer.outer
257 while.cond.outer.outer:
258 br label %while.cond.outer
264 br label %while.cond.outer.i
267 %tmp192.ph.i = call zeroext i1 @check()
268 br i1 %tmp192.ph.i, label %while.cond.outer.split.us.i, label %while.body.loopexit
270 while.cond.outer.split.us.i:
271 br label %while.cond.us.i
274 %cmp.us.i = call zeroext i1 @check()
275 br i1 %cmp.us.i, label %next_data.exit, label %while.body.us.i
278 %cmp7.us.i = call zeroext i1 @check()
279 br i1 %cmp7.us.i, label %if.then.us.i, label %if.else.i
282 br label %while.cond.us.i
285 br label %while.cond.outer.i
288 %tmp192.ph.i.lcssa28 = call zeroext i1 @check()
289 br i1 %tmp192.ph.i.lcssa28, label %while.end, label %while.body
295 br label %while.cond.i
298 %cmp.i = call zeroext i1 @check()
299 br i1 %cmp.i, label %valid_data.exit, label %while.body.i
302 %cmp7.i = call zeroext i1 @check()
303 br i1 %cmp7.i, label %valid_data.exit, label %if.end.i
306 br label %while.cond.i
309 br i1 true, label %if.then, label %while.cond
312 %cmp = call zeroext i1 @check()
313 br i1 %cmp, label %if.then12, label %if.end
319 %tobool3.i = call zeroext i1 @check()
320 br i1 %tobool3.i, label %copy_data.exit, label %while.body.lr.ph.i
323 br label %copy_data.exit
326 %cmp38 = call zeroext i1 @check()
327 br i1 %cmp38, label %if.then39, label %while.cond.outer
330 %cmp5.i = call zeroext i1 @check()
331 br i1 %cmp5.i, label %while.cond.outer.outer.backedge, label %for.cond8.preheader.i8.thread
333 for.cond8.preheader.i8.thread:
334 br label %while.cond.outer.outer.backedge
336 while.cond.outer.outer.backedge:
337 br label %while.cond.outer.outer
343 ; Remove a nested loop with irreducible control flow.
344 ; Ensure that only the middle loop is removed and rely on verify-loopinfo to
346 define void @unloopIrreducible() nounwind {
347 ; CHECK-LABEL: @unloopIrreducible(
349 ; CHECK-NEXT: br label [[FOR_BODY:%.*]]
351 ; CHECK-NEXT: [[CMP2113:%.*]] = call zeroext i1 @check()
352 ; CHECK-NEXT: br i1 [[CMP2113]], label [[FOR_BODY22_LR_PH:%.*]], label [[FOR_INC163:%.*]]
353 ; CHECK: for.body22.lr.ph:
354 ; CHECK-NEXT: br label [[FOR_BODY22:%.*]]
356 ; CHECK-NEXT: br label [[FOR_BODY33:%.*]]
358 ; CHECK-NEXT: br label [[FOR_END:%.*]]
360 ; CHECK-NEXT: [[CMP424:%.*]] = call zeroext i1 @check()
361 ; CHECK-NEXT: br i1 [[CMP424]], label [[FOR_BODY43_LR_PH:%.*]], label [[FOR_END93:%.*]]
362 ; CHECK: for.body43.lr.ph:
363 ; CHECK-NEXT: br label [[FOR_END93]]
365 ; CHECK-NEXT: [[CMP96:%.*]] = call zeroext i1 @check()
366 ; CHECK-NEXT: br i1 [[CMP96]], label [[IF_THEN97:%.*]], label [[FOR_COND103:%.*]]
368 ; CHECK-NEXT: br label [[FOR_COND103T:%.*]]
369 ; CHECK: for.cond103t:
370 ; CHECK-NEXT: br label [[FOR_COND103]]
371 ; CHECK: for.cond103:
372 ; CHECK-NEXT: [[CMP105:%.*]] = call zeroext i1 @check()
373 ; CHECK-NEXT: br i1 [[CMP105]], label [[FOR_BODY106:%.*]], label [[FOR_END120:%.*]]
374 ; CHECK: for.body106:
375 ; CHECK-NEXT: [[CMP108:%.*]] = call zeroext i1 @check()
376 ; CHECK-NEXT: br i1 [[CMP108]], label [[IF_THEN109:%.*]], label [[FOR_INC117:%.*]]
378 ; CHECK-NEXT: br label [[FOR_INC117]]
380 ; CHECK-NEXT: br label [[FOR_COND103T]]
382 ; CHECK-NEXT: br label [[FOR_INC159:%.*]]
384 ; CHECK-NEXT: br label [[FOR_INC163]]
386 ; CHECK-NEXT: [[CMP12:%.*]] = call zeroext i1 @check()
387 ; CHECK-NEXT: br i1 [[CMP12]], label [[FOR_BODY]], label [[FOR_END166:%.*]]
389 ; CHECK-NEXT: ret void
395 %cmp2113 = call zeroext i1 @check()
396 br i1 %cmp2113, label %for.body22.lr.ph, label %for.inc163
408 %cmp424 = call zeroext i1 @check()
409 br i1 %cmp424, label %for.body43.lr.ph, label %for.end93
415 %cmp96 = call zeroext i1 @check()
416 br i1 %cmp96, label %if.then97, label %for.cond103
419 br label %for.cond103t
422 br label %for.cond103
425 %cmp105 = call zeroext i1 @check()
426 br i1 %cmp105, label %for.body106, label %for.end120
429 %cmp108 = call zeroext i1 @check()
430 br i1 %cmp108, label %if.then109, label %for.inc117
436 br label %for.cond103t
442 br i1 false, label %for.body22, label %for.cond15.for.inc163_crit_edge
444 for.cond15.for.inc163_crit_edge:
448 %cmp12 = call zeroext i1 @check()
449 br i1 %cmp12, label %for.body, label %for.end166
456 ; Remove a loop whose exit branches into a sibling loop.
457 ; Ensure that only the loop is removed and rely on verify-loopinfo to
459 define void @unloopCriticalEdge(i1 %arg) nounwind {
460 ; CHECK-LABEL: @unloopCriticalEdge(
462 ; CHECK-NEXT: br label [[FOR_COND31:%.*]]
464 ; CHECK-NEXT: br i1 false, label [[FOR_BODY35:%.*]], label [[FOR_END94:%.*]]
466 ; CHECK-NEXT: br label [[WHILE_COND_I_PREHEADER:%.*]]
467 ; CHECK: while.cond.i.preheader:
468 ; CHECK-NEXT: br i1 %arg, label [[WHILE_COND_I_PREHEADER_SPLIT:%.*]], label [[WHILE_COND_OUTER_I_LOOPEXIT_SPLIT:%.*]]
469 ; CHECK: while.cond.i.preheader.split:
470 ; CHECK-NEXT: br label [[WHILE_COND_I:%.*]]
471 ; CHECK: while.cond.i:
472 ; CHECK-NEXT: br i1 true, label [[WHILE_COND_I]], label [[WHILE_COND_OUTER_I_LOOPEXIT:%.*]]
473 ; CHECK: while.cond.outer.i.loopexit:
474 ; CHECK-NEXT: br label [[WHILE_COND_OUTER_I_LOOPEXIT_SPLIT]]
475 ; CHECK: while.cond.outer.i.loopexit.split:
476 ; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
478 ; CHECK-NEXT: br label [[FOR_END78:%.*]]
480 ; CHECK-NEXT: br i1 false, label [[PROC2_EXIT:%.*]], label [[FOR_COND_I_PREHEADER:%.*]]
481 ; CHECK: for.cond.i.preheader:
482 ; CHECK-NEXT: br label [[FOR_COND_I:%.*]]
484 ; CHECK-NEXT: br label [[FOR_COND_I]]
486 ; CHECK-NEXT: unreachable
488 ; CHECK-NEXT: ret void
494 br i1 false, label %for.body35, label %for.end94
497 br label %while.cond.i.preheader
499 while.cond.i.preheader:
500 br i1 %arg, label %while.cond.i.preheader.split, label %while.cond.outer.i.loopexit.split
502 while.cond.i.preheader.split:
503 br label %while.cond.i
506 br i1 true, label %while.cond.i, label %while.cond.outer.i.loopexit
508 while.cond.outer.i.loopexit:
509 br label %while.cond.outer.i.loopexit.split
511 while.cond.outer.i.loopexit.split:
512 br i1 false, label %while.cond.i.preheader, label %Func2.exit
518 br i1 false, label %while.body, label %while.end
524 br i1 false, label %Proc2.exit, label %for.cond.i.preheader
526 for.cond.i.preheader:
539 ; Test UnloopUpdater::removeBlocksFromAncestors.
541 ; Check that the loop backedge is removed from the middle loop 1699,
542 ; but not the inner loop 1676.
543 define void @removeSubloopBlocks() nounwind {
544 ; CHECK-LABEL: @removeSubloopBlocks(
546 ; CHECK-NEXT: br label [[TRYAGAIN_OUTER:%.*]]
547 ; CHECK: tryagain.outer:
548 ; CHECK-NEXT: br label [[TRYAGAIN:%.*]]
550 ; CHECK-NEXT: br i1 false, label [[SW_BB1669:%.*]], label [[SW_BB304:%.*]]
552 ; CHECK-NEXT: ret void
554 ; CHECK-NEXT: br i1 true, label [[SW_DEFAULT1711:%.*]], label [[WHILE_COND1676_PREHEADER:%.*]]
555 ; CHECK: while.cond1676.preheader:
556 ; CHECK-NEXT: br label [[WHILE_COND1676:%.*]]
557 ; CHECK: while.cond1676:
558 ; CHECK-NEXT: br i1 true, label [[WHILE_END1699:%.*]], label [[WHILE_BODY1694:%.*]]
559 ; CHECK: while.body1694:
560 ; CHECK-NEXT: unreachable
561 ; CHECK: while.end1699:
562 ; CHECK-NEXT: br label [[SW_DEFAULT1711]]
563 ; CHECK: sw.default1711:
564 ; CHECK-NEXT: br label [[DEFCHAR:%.*]]
566 ; CHECK-NEXT: br i1 true, label [[IF_END2413:%.*]], label [[IF_THEN2368:%.*]]
567 ; CHECK: if.then2368:
568 ; CHECK-NEXT: unreachable
570 ; CHECK-NEXT: unreachable
573 br label %tryagain.outer
575 tryagain.outer: ; preds = %sw.bb304, %entry
578 tryagain: ; preds = %while.end1699, %tryagain.outer
579 br i1 false, label %sw.bb1669, label %sw.bb304
581 sw.bb304: ; preds = %tryagain
582 br i1 true, label %return, label %tryagain.outer
584 sw.bb1669: ; preds = %tryagain
585 br i1 true, label %sw.default1711, label %while.cond1676
587 while.cond1676: ; preds = %while.body1694, %sw.bb1669
588 br i1 true, label %while.end1699, label %while.body1694
590 while.body1694: ; preds = %while.cond1676
591 br label %while.cond1676
593 while.end1699: ; preds = %while.cond1676
594 br i1 false, label %tryagain, label %sw.default1711
596 sw.default1711: ; preds = %while.end1699, %sw.bb1669, %tryagain
599 defchar: ; preds = %sw.default1711, %sw.bb376
600 br i1 true, label %if.end2413, label %if.then2368
602 if.then2368: ; preds = %defchar
605 if.end2413: ; preds = %defchar
608 return: ; preds = %sw.bb304
612 ; PR11335: the most deeply nested block should be removed from the outer loop.
613 define void @removeSubloopBlocks2() nounwind {
614 ; CHECK-LABEL: @removeSubloopBlocks2(
616 ; CHECK-NEXT: [[TOBOOL_I:%.*]] = icmp ne i32 undef, 0
617 ; CHECK-NEXT: br label [[LBL_616:%.*]]
618 ; CHECK: lbl_616.loopexit:
619 ; CHECK-NEXT: br label [[LBL_616]]
621 ; CHECK-NEXT: br label [[FOR_COND:%.*]]
623 ; CHECK-NEXT: br i1 false, label [[FOR_COND1_PREHEADER:%.*]], label [[LBL_616_LOOPEXIT:%.*]]
624 ; CHECK: for.cond1.preheader:
625 ; CHECK-NEXT: br label [[FOR_COND1:%.*]]
626 ; CHECK: for.cond1.loopexit:
627 ; CHECK-NEXT: unreachable
629 ; CHECK-NEXT: br i1 false, label [[FOR_BODY2:%.*]], label [[FOR_COND3:%.*]]
631 ; CHECK-NEXT: br label [[FOR_COND_I:%.*]]
633 ; CHECK-NEXT: br i1 [[TOBOOL_I]], label [[FOR_COND_I]], label [[FOR_COND1_LOOPEXIT:%.*]]
635 ; CHECK-NEXT: ret void
638 %tobool.i = icmp ne i32 undef, 0
641 lbl_616.loopexit: ; preds = %for.cond
644 lbl_616: ; preds = %lbl_616.loopexit, %entry
647 for.cond: ; preds = %for.cond3, %lbl_616
648 br i1 false, label %for.cond1.preheader, label %lbl_616.loopexit
650 for.cond1.preheader: ; preds = %for.cond
653 for.cond1.loopexit: ; preds = %for.cond.i
656 for.cond1: ; preds = %for.cond1.loopexit, %for.cond1.preheader
657 br i1 false, label %for.body2, label %for.cond3
659 for.body2: ; preds = %for.cond1
662 for.cond.i: ; preds = %for.cond.i, %for.body2
663 br i1 %tobool.i, label %for.cond.i, label %for.cond1.loopexit
665 for.cond3: ; preds = %for.cond1
666 br i1 false, label %for.cond, label %if.end
668 if.end: ; preds = %for.cond3