1 ; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,NOLIMIT
2 ; RUN: opt -memssa-check-limit=0 -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,LIMIT
4 ; %ptr can't alias %local, so we should be able to optimize the use of %local to
5 ; point to the store to %local.
6 ; CHECK-LABEL: define void @check
7 define void @check(i8* %ptr, i1 %bool) {
9 %local = alloca i8, align 1
10 ; CHECK: 1 = MemoryDef(liveOnEntry)
11 ; CHECK-NEXT: store i8 0, i8* %local, align 1
12 store i8 0, i8* %local, align 1
13 br i1 %bool, label %if.then, label %if.end
16 %p2 = getelementptr inbounds i8, i8* %ptr, i32 1
17 ; CHECK: 2 = MemoryDef(1)
18 ; CHECK-NEXT: store i8 0, i8* %p2, align 1
19 store i8 0, i8* %p2, align 1
23 ; CHECK: 3 = MemoryPhi({entry,1},{if.then,2})
24 ; NOLIMIT: MemoryUse(1) MayAlias
25 ; NOLIMIT-NEXT: load i8, i8* %local, align 1
27 ; LIMIT-NEXT: load i8, i8* %local, align 1
28 load i8, i8* %local, align 1
32 ; CHECK-LABEL: define void @check2
33 define void @check2(i1 %val1, i1 %val2, i1 %val3) {
35 %local = alloca i8, align 1
36 %local2 = alloca i8, align 1
38 ; CHECK: 1 = MemoryDef(liveOnEntry)
39 ; CHECK-NEXT: store i8 0, i8* %local
40 store i8 0, i8* %local
41 br i1 %val1, label %if.then, label %phi.3
44 ; CHECK: 2 = MemoryDef(1)
45 ; CHECK-NEXT: store i8 2, i8* %local2
46 store i8 2, i8* %local2
47 br i1 %val2, label %phi.2, label %phi.3
50 ; CHECK: 7 = MemoryPhi({entry,1},{if.then,2})
51 ; CHECK: 3 = MemoryDef(7)
52 ; CHECK-NEXT: store i8 3, i8* %local2
53 store i8 3, i8* %local2
54 br i1 %val3, label %phi.2, label %phi.1
57 ; CHECK: 5 = MemoryPhi({if.then,2},{phi.3,3})
58 ; CHECK: 4 = MemoryDef(5)
59 ; CHECK-NEXT: store i8 4, i8* %local2
60 store i8 4, i8* %local2
64 ; Order matters here; phi.2 needs to come before phi.3, because that's the order
66 ; CHECK: 6 = MemoryPhi({phi.2,4},{phi.3,3})
67 ; NOLIMIT: MemoryUse(1) MayAlias
68 ; NOLIMIT-NEXT: load i8, i8* %local
70 ; LIMIT-NEXT: load i8, i8* %local
75 ; CHECK-LABEL: define void @cross_phi
76 define void @cross_phi(i8* noalias %p1, i8* noalias %p2) {
77 ; CHECK: 1 = MemoryDef(liveOnEntry)
78 ; CHECK-NEXT: store i8 0, i8* %p1
80 ; NOLIMIT: MemoryUse(1) MustAlias
81 ; NOLIMIT-NEXT: load i8, i8* %p1
83 ; LIMIT-NEXT: load i8, i8* %p1
85 br i1 undef, label %a, label %b
88 ; CHECK: 2 = MemoryDef(1)
89 ; CHECK-NEXT: store i8 0, i8* %p2
91 br i1 undef, label %c, label %d
94 ; CHECK: 3 = MemoryDef(1)
95 ; CHECK-NEXT: store i8 1, i8* %p2
97 br i1 undef, label %c, label %d
100 ; CHECK: 6 = MemoryPhi({a,2},{b,3})
101 ; CHECK: 4 = MemoryDef(6)
102 ; CHECK-NEXT: store i8 2, i8* %p2
107 ; CHECK: 7 = MemoryPhi({a,2},{b,3})
108 ; CHECK: 5 = MemoryDef(7)
109 ; CHECK-NEXT: store i8 3, i8* %p2
114 ; 8 = MemoryPhi({c,4},{d,5})
115 ; NOLIMIT: MemoryUse(1) MustAlias
116 ; NOLIMIT-NEXT: load i8, i8* %p1
117 ; LIMIT: MemoryUse(8)
118 ; LIMIT-NEXT: load i8, i8* %p1
123 ; CHECK-LABEL: define void @looped
124 define void @looped(i8* noalias %p1, i8* noalias %p2) {
125 ; CHECK: 1 = MemoryDef(liveOnEntry)
126 ; CHECK-NEXT: store i8 0, i8* %p1
131 ; CHECK: 6 = MemoryPhi({%0,1},{loop.3,4})
132 ; CHECK: 2 = MemoryDef(6)
133 ; CHECK-NEXT: store i8 0, i8* %p2
135 br i1 undef, label %loop.2, label %loop.3
138 ; CHECK: 5 = MemoryPhi({loop.1,2},{loop.3,4})
139 ; CHECK: 3 = MemoryDef(5)
140 ; CHECK-NEXT: store i8 1, i8* %p2
145 ; CHECK: 7 = MemoryPhi({loop.1,2},{loop.2,3})
146 ; CHECK: 4 = MemoryDef(7)
147 ; CHECK-NEXT: store i8 2, i8* %p2
149 ; NOLIMIT: MemoryUse(1) MayAlias
150 ; NOLIMIT-NEXT: load i8, i8* %p1
151 ; LIMIT: MemoryUse(4)
152 ; LIMIT-NEXT: load i8, i8* %p1
154 br i1 undef, label %loop.2, label %loop.1
157 ; CHECK-LABEL: define void @looped_visitedonlyonce
158 define void @looped_visitedonlyonce(i8* noalias %p1, i8* noalias %p2) {
162 ; CHECK: 5 = MemoryPhi({%0,liveOnEntry},{if.end,3})
163 ; CHECK-NEXT: br i1 undef, label %if.then, label %if.end
164 br i1 undef, label %if.then, label %if.end
167 ; CHECK: 1 = MemoryDef(5)
168 ; CHECK-NEXT: store i8 0, i8* %p1
170 br i1 undef, label %if.end, label %if.then2
173 ; CHECK: 2 = MemoryDef(1)
174 ; CHECK-NEXT: store i8 1, i8* %p2
179 ; CHECK: 4 = MemoryPhi({while.cond,5},{if.then,1},{if.then2,2})
180 ; CHECK: MemoryUse(4)
181 ; CHECK-NEXT: load i8, i8* %p1
183 ; CHECK: 3 = MemoryDef(4)
184 ; CHECK-NEXT: store i8 2, i8* %p2
186 ; NOLIMIT: MemoryUse(4) MayAlias
187 ; NOLIMIT-NEXT: load i8, i8* %p1
188 ; LIMIT: MemoryUse(3)
189 ; LIMIT-NEXT: load i8, i8* %p1
194 ; CHECK-LABEL: define i32 @use_not_optimized_due_to_backedge
195 define i32 @use_not_optimized_due_to_backedge(i32* nocapture %m_i_strides, i32* nocapture readonly %eval_left_dims) {
197 ; CHECK: 1 = MemoryDef(liveOnEntry)
198 ; CHECK_NEXT: store i32 1, i32* %m_i_strides, align 4
199 store i32 1, i32* %m_i_strides, align 4
202 for.cond.cleanup: ; preds = %for.inc
205 for.body: ; preds = %entry, %for.inc
206 ; CHECK: 4 = MemoryPhi({entry,1},{for.inc,3})
207 ; CHECK-NEXT: %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.inc ]
208 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.inc ]
209 %m_i_size.022 = phi i32 [ 1, %entry ], [ %m_i_size.1, %for.inc ]
210 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
211 %cmp1 = icmp eq i64 %indvars.iv, 0
212 %arrayidx2 = getelementptr inbounds i32, i32* %m_i_strides, i64 %indvars.iv
213 ; CHECK: MemoryUse(4)
214 ; CHECK-NEXT: %0 = load i32, i32* %arrayidx2, align 4
215 %0 = load i32, i32* %arrayidx2, align 4
216 %arrayidx4 = getelementptr inbounds i32, i32* %eval_left_dims, i64 %indvars.iv
217 ; CHECK: MemoryUse(4)
218 ; CHECK-NEXT: %1 = load i32, i32* %arrayidx4, align 4
219 %1 = load i32, i32* %arrayidx4, align 4
220 %mul = mul nsw i32 %1, %0
221 br i1 %cmp1, label %if.then, label %for.inc
223 if.then: ; preds = %for.body
224 %arrayidx7 = getelementptr inbounds i32, i32* %m_i_strides, i64 %indvars.iv.next
225 ; CHECK: 2 = MemoryDef(4)
226 ; CHECK-NEXT: store i32 %mul, i32* %arrayidx7, align 4
227 store i32 %mul, i32* %arrayidx7, align 4
230 for.inc: ; preds = %for.body, %if.then
231 ; CHECK: 3 = MemoryPhi({for.body,4},{if.then,2})
232 ; CHECK-NEXT: %m_i_size.1 = phi i32 [ %m_i_size.022, %if.then ], [ %mul, %for.body ]
233 %m_i_size.1 = phi i32 [ %m_i_size.022, %if.then ], [ %mul, %for.body ]
234 br i1 %cmp1, label %for.body, label %for.cond.cleanup
238 %ArrayType = type { [2 x i64] }
239 %StructOverArrayType = type { %ArrayType }
240 %BigStruct = type { i8, i8, i8, i8, i8, i8, i8, %ArrayType, %ArrayType}
242 ; CHECK-LABEL: define void @use_not_optimized_due_to_backedge_unknown
243 define void @use_not_optimized_due_to_backedge_unknown(%BigStruct* %this) {
245 %eval_left_dims = alloca %StructOverArrayType, align 8
246 %tmp0 = bitcast %StructOverArrayType* %eval_left_dims to i8*
247 %eval_right_dims = alloca %StructOverArrayType, align 8
248 %tmp1 = bitcast %StructOverArrayType* %eval_right_dims to i8*
249 %lhs_strides = alloca %ArrayType, align 8
250 %rhs_strides = alloca %ArrayType, align 8
251 br label %for.body.preheader
253 for.body.preheader: ; preds = %entry
254 %arrayidx.i527 = getelementptr inbounds %BigStruct, %BigStruct* %this, i64 0, i32 7, i32 0, i64 0
255 ; CHECK: 1 = MemoryDef(liveOnEntry)
256 ; CHECK-NEXT: store i64 1, i64* %arrayidx.i527, align 8
257 store i64 1, i64* %arrayidx.i527, align 8
258 %arrayidx.i528 = getelementptr inbounds %BigStruct, %BigStruct* %this, i64 0, i32 8, i32 0, i64 0
259 ; CHECK: 2 = MemoryDef(1)
260 ; CHECK-NEXT: store i64 1, i64* %arrayidx.i528, align 8
261 store i64 1, i64* %arrayidx.i528, align 8
262 br label %for.main.body
264 for.main.body: ; preds = %if.end220.if.then185_crit_edge, %for.body.preheader
265 ; CHECK: 4 = MemoryPhi({for.body.preheader,2},{if.end220.if.then185_crit_edge,3})
266 ; CHECK-NEXT: %nocontract_idx.0656 = phi i64 [ 0, %for.body.preheader ], [ 1, %if.end220.if.then185_crit_edge ]
267 %nocontract_idx.0656 = phi i64 [ 0, %for.body.preheader ], [ 1, %if.end220.if.then185_crit_edge ]
268 %add199 = add nuw nsw i64 %nocontract_idx.0656, 1
269 %cmp200 = icmp eq i64 %nocontract_idx.0656, 0
270 %arrayidx.i559 = getelementptr inbounds %BigStruct, %BigStruct* %this, i64 0, i32 7, i32 0, i64 %nocontract_idx.0656
271 ; CHECK: MemoryUse(4)
272 ; CHECK-NEXT: %tmp21 = load i64, i64* %arrayidx.i559, align 8
273 %tmp21 = load i64, i64* %arrayidx.i559, align 8
274 %mul206 = mul nsw i64 %tmp21, %tmp21
275 br i1 %cmp200, label %if.end220.if.then185_crit_edge, label %the.end
277 if.end220.if.then185_crit_edge: ; preds = %for.main.body
278 %arrayidx.i571 = getelementptr inbounds %BigStruct, %BigStruct* %this, i64 0, i32 7, i32 0, i64 %add199
279 ; CHECK: 3 = MemoryDef(4)
280 ; CHECK-NEXT: store i64 %mul206, i64* %arrayidx.i571, align 8
281 store i64 %mul206, i64* %arrayidx.i571, align 8
282 br label %for.main.body
284 the.end: ; preds = %for.main.body
290 @c = local_unnamed_addr global [2 x i16] zeroinitializer, align 2
292 define i32 @dont_merge_noalias_simple(i32* noalias %ptr) {
293 ; CHECK-LABEL: define i32 @dont_merge_noalias_simple
294 ; CHECK-LABEL: entry:
295 ; CHECK: ; 1 = MemoryDef(liveOnEntry)
296 ; CHECK-NEXT: store i16 1, i16* %s1.ptr, align 2
298 ; CHECK-LABEL: %for.body
299 ; CHECK: ; MemoryUse(4)
300 ; CHECK-NEXT: %lv = load i16, i16* %arrayidx, align 2
303 %s1.ptr = getelementptr inbounds [2 x i16], [2 x i16]* @c, i64 0, i64 0
304 store i16 1, i16* %s1.ptr, align 2
307 for.body: ; preds = %for.body, %entry
308 %storemerge2 = phi i32 [ 1, %entry ], [ %dec, %for.body ]
309 %idxprom1 = zext i32 %storemerge2 to i64
310 %arrayidx = getelementptr inbounds [2 x i16], [2 x i16]* @c, i64 0, i64 %idxprom1
311 %lv = load i16, i16* %arrayidx, align 2
312 %conv = sext i16 %lv to i32
313 store i32 %conv, i32* %ptr, align 4
314 %dec = add nsw i32 %storemerge2, -1
315 %cmp = icmp sgt i32 %storemerge2, 0
316 br i1 %cmp, label %for.body, label %for.end
318 for.end: ; preds = %for.body
319 %s2.ptr = getelementptr inbounds [2 x i16], [2 x i16]* @c, i64 0, i64 0
320 store i16 0, i16* %s2.ptr, align 2
325 define i32 @dont_merge_noalias_complex(i32* noalias %ptr, i32* noalias %another) {
326 ; CHECK-LABEL: define i32 @dont_merge_noalias_complex
327 ; CHECK-LABEL: entry:
328 ; CHECK: ; 1 = MemoryDef(liveOnEntry)
329 ; CHECK-NEXT: store i16 1, i16* %s1.ptr, align 2
331 ; CHECK-LABEL: %for.body
332 ; CHECK: ; MemoryUse(7)
333 ; CHECK-NEXT: %lv = load i16, i16* %arrayidx, align 2
336 %s1.ptr = getelementptr inbounds [2 x i16], [2 x i16]* @c, i64 0, i64 0
337 store i16 1, i16* %s1.ptr, align 2
340 for.body: ; preds = %for.body, %entry
341 %storemerge2 = phi i32 [ 1, %entry ], [ %dec, %merge.body ]
342 %idxprom1 = zext i32 %storemerge2 to i64
343 %arrayidx = getelementptr inbounds [2 x i16], [2 x i16]* @c, i64 0, i64 %idxprom1
344 %lv = load i16, i16* %arrayidx, align 2
345 %conv = sext i16 %lv to i32
346 store i32 %conv, i32* %ptr, align 4
347 %dec = add nsw i32 %storemerge2, -1
349 %cmpif = icmp sgt i32 %storemerge2, 1
350 br i1 %cmpif, label %if.body, label %else.body
353 store i32 %conv, i32* %another, align 4
357 store i32 %conv, i32* %another, align 4
361 %cmp = icmp sgt i32 %storemerge2, 0
362 br i1 %cmp, label %for.body, label %for.end
364 for.end: ; preds = %for.body
365 %s2.ptr = getelementptr inbounds [2 x i16], [2 x i16]* @c, i64 0, i64 0
366 store i16 0, i16* %s2.ptr, align 2
370 declare i1 @should_exit(i32) readnone
371 declare void @init([32 x i32]*)
373 ; Test case for PR47498.
374 ; %l.1 may read the result of `store i32 10, i32* %p.1` in %storebb, because
375 ; after %storebb has been executed, %loop.1.header might be executed again.
376 ; Make sure %l.1's defining access is the MemoryPhi in the block.
377 define void @dont_merge_noalias_complex_2(i32 %arg, i32 %arg1) {
378 ; CHECK-LABEL: define void @dont_merge_noalias_complex_2(
380 ; CHECK-LABEL: entry:
381 ; CHECK: ; 1 = MemoryDef(liveOnEntry)
382 ; CHECK-NEXT: call void @init([32 x i32]* %tmp)
384 ; CHECK-LABEL: loop.1.header:
385 ; CHECK-NEXT: ; 4 = MemoryPhi({entry,1},{loop.1.latch,3})
386 ; CHECK: ; MemoryUse(4)
387 ; CHECK-NEXT: %l.1 = load i32, i32* %p.1, align 4
389 ; CHECK-LABEL: loop.1.latch:
390 ; CHECK-NEXT: ; 3 = MemoryPhi({loop.1.header,4},{storebb,2})
392 ; CHECK-LABEL: storebb:
393 ; CHECK-NEXT: %iv.add2 = add nuw nsw i64 %iv, 2
394 ; CHECK-NEXT: %p.2 = getelementptr inbounds [32 x i32], [32 x i32]* %tmp, i64 0, i64 %iv.add2
395 ; CHECK-NEXT: ; MemoryUse(4)
396 ; CHECK-NEXT: %l.2 = load i32, i32* %p.2, align 4
397 ; CHECK-NEXT: ; 2 = MemoryDef(4)
398 ; CHECK-NEXT: store i32 10, i32* %p.1, align 4
400 %tmp = alloca [32 x i32], align 16
401 call void @init([32 x i32]* %tmp)
402 br label %loop.1.header
405 %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.1.latch ]
406 %iv.next = add nuw nsw i64 %iv, 1
407 %p.1 = getelementptr inbounds [32 x i32], [32 x i32]* %tmp, i64 0, i64 %iv.next
408 %l.1 = load i32, i32* %p.1, align 4
409 %tmp244 = icmp ult i64 %iv, 10
410 br i1 %tmp244, label %loop.1.latch, label %storebb
413 %ec = call i1 @should_exit(i32 %l.1)
414 br i1 %ec, label %exit, label %loop.1.header
417 %iv.add2 = add nuw nsw i64 %iv, 2
418 %p.2 = getelementptr inbounds [32 x i32], [32 x i32]* %tmp, i64 0, i64 %iv.add2
419 %l.2 = load i32, i32* %p.2, align 4
420 store i32 10, i32* %p.1, align 4
421 br label %loop.1.latch
427 ; CHECK-LABEL: define void @use_clobbered_by_def_in_loop()
428 define void @use_clobbered_by_def_in_loop() {
430 %nodeStack = alloca [12 x i32], align 4
431 %0 = bitcast [12 x i32]* %nodeStack to i8*
432 call void @llvm.lifetime.start.p0i8(i64 48, i8* nonnull %0)
433 br i1 false, label %cleanup, label %while.cond
435 ; CHECK-LABEL: while.cond:
436 ; CHECK-NEXT: ; [[NO6:.*]] = MemoryPhi({entry,1},{while.cond.backedge,5})
438 while.cond: ; preds = %entry, %while.cond.backedge
439 %depth.1 = phi i32 [ %depth.1.be, %while.cond.backedge ], [ 0, %entry ]
440 %cmp = icmp sgt i32 %depth.1, 0
441 br i1 %cmp, label %land.rhs, label %while.end
443 ; CHECK-LABEL: land.rhs:
444 ; CHECK-NEXT: %sub = add nsw i32 %depth.1, -1
445 ; CHECK-NEXT: %arrayidx = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i32 %sub
446 ; CHECK-NEXT: ; MemoryUse([[NO6]])
447 ; CHECK-NEXT: %1 = load i32, i32* %arrayidx, align 4
449 land.rhs: ; preds = %while.cond
450 %sub = add nsw i32 %depth.1, -1
451 %arrayidx = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i32 %sub
452 %1 = load i32, i32* %arrayidx, align 4
453 br i1 true, label %while.body, label %while.end
455 while.body: ; preds = %land.rhs
456 br i1 true, label %cleanup, label %while.cond.backedge
458 while.cond.backedge: ; preds = %while.body, %while.end
459 %depth.1.be = phi i32 [ %sub, %while.body ], [ %inc, %while.end ]
462 while.end: ; preds = %while.cond, %land.rhs
463 %arrayidx10 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i32 %depth.1
464 store i32 %depth.1, i32* %arrayidx10, align 4
465 %inc = add nsw i32 %depth.1, 1
466 br i1 true, label %cleanup, label %while.cond.backedge
468 cleanup: ; preds = %while.body, %while.end, %entry
469 call void @llvm.lifetime.end.p0i8(i64 48, i8* nonnull %0)
473 declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
474 declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
476 define void @another_loop_clobber_inc() {
477 ; CHECK-LABEL: void @another_loop_clobber_inc
478 ; CHECK-LABEL: loop.header:
479 ; CHECK-NEXT: ; 4 = MemoryPhi({entry,1},{cond.read,3})
481 ; CHECK-LABEL: cond.read:
482 ; CHECK: ; MemoryUse(4)
483 ; CHECK-NEXT: %use = load i32, i32* %ptr.1, align 4
484 ; CHECK-NEXT: ; 2 = MemoryDef(4)
485 ; CHECK-NEXT: %c.2 = call i1 @cond(i32 %use)
486 ; CHECK-NEXT: %ptr.10 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i32 %inc
487 ; CHECK-NEXT: ; 3 = MemoryDef(2)
488 ; CHECK-NEXT: store i32 10, i32* %ptr.2, align 4
491 %nodeStack = alloca [12 x i32], align 4
492 %c.1 = call i1 @cond(i32 1)
493 br i1 %c.1, label %cleanup, label %loop.header
495 loop.header: ; preds = %entry, %while.cond.backedge
496 %depth.1 = phi i32 [ %inc, %cond.read], [ 1, %entry ]
497 %cmp = icmp sgt i32 %depth.1, 0
498 %inc = add nsw i32 %depth.1, 3
499 %inc2 = add nsw i32 %depth.1, 6
500 br i1 %cmp, label %cond.read, label %cleanup
502 cond.read: ; preds = %while.cond
503 %ptr.1 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i32 %depth.1
504 %ptr.2 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i32 %inc2
505 %use = load i32, i32* %ptr.1, align 4
506 %c.2 = call i1 @cond(i32 %use)
507 %ptr.10 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i32 %inc
508 store i32 10, i32* %ptr.2, align 4
509 br i1 %c.2, label %loop.header, label %cleanup
515 define void @another_loop_clobber_dec() {
516 ; CHECK-LABEL: void @another_loop_clobber_dec
517 ; CHECK-LABEL: loop.header:
518 ; CHECK-NEXT: ; 4 = MemoryPhi({entry,1},{cond.read,3})
520 ; CHECK-LABEL: cond.read:
521 ; CHECK: ; MemoryUse(4)
522 ; CHECK-NEXT: %use = load i32, i32* %ptr.1, align 4
523 ; CHECK-NEXT: ; 2 = MemoryDef(4)
524 ; CHECK-NEXT: %c.2 = call i1 @cond(i32 %use)
525 ; CHECK-NEXT: %ptr.10 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i64 %sub
526 ; CHECK-NEXT: ; 3 = MemoryDef(2)
527 ; CHECK-NEXT: store i32 10, i32* %ptr.2, align 4
530 %nodeStack = alloca [12 x i32], align 4
531 %c.1 = call i1 @cond(i32 1)
532 br i1 %c.1, label %cleanup, label %loop.header
534 loop.header: ; preds = %entry, %while.cond.backedge
535 %depth.1 = phi i64 [ %sub, %cond.read], [ 20, %entry ]
536 %cmp = icmp sgt i64 %depth.1, 6
537 %sub = sub nsw nuw i64 %depth.1, 3
538 %sub2 = sub nsw nuw i64 %depth.1, 6
539 br i1 %cmp, label %cond.read, label %cleanup
541 cond.read: ; preds = %while.cond
542 %ptr.1 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i64 %depth.1
543 %ptr.2 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i64 %sub2
544 %use = load i32, i32* %ptr.1, align 4
545 %c.2 = call i1 @cond(i32 %use)
546 %ptr.10 = getelementptr inbounds [12 x i32], [12 x i32]* %nodeStack, i32 0, i64 %sub
547 store i32 10, i32* %ptr.2, align 4
548 br i1 %c.2, label %loop.header, label %cleanup
554 declare i1 @cond(i32)