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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; RUN: opt -passes='default<O2>' -S %s | FileCheck %s
; Slightly reduced test case for a loop iterating over a std::span with libc++ hardening.
; TODO: The runtime check in the loop should be removed.
;
; #include <span>
; #include <iostream>
;
; void use(unsigned&);
;
; void fill_with_foreach(std::span<unsigned> elems) {
; for (unsigned& x : elems)
; use(x);
; }
%"class.std::__1::span" = type { ptr, i64 }
%"struct.std::__1::__bounded_iter" = type { ptr, ptr, ptr }
define void @test_fill_with_foreach([2 x i64] %elems.coerce) {
; CHECK-LABEL: define void @test_fill_with_foreach
; CHECK-SAME: ([2 x i64] [[ELEMS_COERCE:%.*]]) local_unnamed_addr {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ELEMS_COERCE_FCA_0_EXTRACT:%.*]] = extractvalue [2 x i64] [[ELEMS_COERCE]], 0
; CHECK-NEXT: [[TMP0:%.*]] = inttoptr i64 [[ELEMS_COERCE_FCA_0_EXTRACT]] to ptr
; CHECK-NEXT: [[ELEMS_COERCE_FCA_1_EXTRACT:%.*]] = extractvalue [2 x i64] [[ELEMS_COERCE]], 1
; CHECK-NEXT: [[ADD_PTR_I_IDX:%.*]] = shl nsw i64 [[ELEMS_COERCE_FCA_1_EXTRACT]], 2
; CHECK-NEXT: [[ADD_PTR_I:%.*]] = getelementptr inbounds i8, ptr [[TMP0]], i64 [[ADD_PTR_I_IDX]]
; CHECK-NEXT: [[CMP_NOT_I_I_I_I:%.*]] = icmp slt i64 [[ELEMS_COERCE_FCA_1_EXTRACT]], 0
; CHECK-NEXT: br i1 [[CMP_NOT_I_I_I_I]], label [[ERROR:%.*]], label [[FOR_COND_PREHEADER_SPLIT:%.*]]
; CHECK: for.cond.preheader.split:
; CHECK-NEXT: [[CMP_I_NOT2:%.*]] = icmp eq i64 [[ELEMS_COERCE_FCA_1_EXTRACT]], 0
; CHECK-NEXT: br i1 [[CMP_I_NOT2]], label [[COMMON_RET:%.*]], label [[FOR_BODY:%.*]]
; CHECK: common.ret:
; CHECK-NEXT: ret void
; CHECK: error:
; CHECK-NEXT: tail call void @error()
; CHECK-NEXT: br label [[COMMON_RET]]
; CHECK: for.body:
; CHECK-NEXT: [[__BEGIN1_SROA_0_03:%.*]] = phi ptr [ [[INCDEC_PTR_I:%.*]], [[FOR_BODY]] ], [ [[TMP0]], [[FOR_COND_PREHEADER_SPLIT]] ]
; CHECK-NEXT: tail call void @use(ptr noundef nonnull align 4 dereferenceable(4) [[__BEGIN1_SROA_0_03]])
; CHECK-NEXT: [[INCDEC_PTR_I]] = getelementptr inbounds nuw i8, ptr [[__BEGIN1_SROA_0_03]], i64 4
; CHECK-NEXT: [[CMP_I_NOT:%.*]] = icmp eq ptr [[INCDEC_PTR_I]], [[ADD_PTR_I]]
; CHECK-NEXT: br i1 [[CMP_I_NOT]], label [[COMMON_RET]], label [[FOR_BODY]]
;
entry:
%elems = alloca %"class.std::__1::span", align 8
%__begin1 = alloca %"struct.std::__1::__bounded_iter", align 8
%__end1 = alloca %"struct.std::__1::__bounded_iter", align 8
%elems.coerce.fca.0.extract = extractvalue [2 x i64] %elems.coerce, 0
store i64 %elems.coerce.fca.0.extract, ptr %elems, align 8
%elems.coerce.fca.1.extract = extractvalue [2 x i64] %elems.coerce, 1
%elems.coerce.fca.1.gep = getelementptr inbounds [2 x i64], ptr %elems, i64 0, i64 1
store i64 %elems.coerce.fca.1.extract, ptr %elems.coerce.fca.1.gep, align 8
call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %__begin1) #6
%0 = load ptr, ptr %elems, align 8
%__size_.i.i = getelementptr inbounds %"class.std::__1::span", ptr %elems, i64 0, i32 1
%1 = load i64, ptr %__size_.i.i, align 8
%add.ptr.i = getelementptr inbounds i32, ptr %0, i64 %1
store ptr %0, ptr %__begin1, align 8
%__begin_.i.i.i.i = getelementptr inbounds %"struct.std::__1::__bounded_iter", ptr %__begin1, i64 0, i32 1
store ptr %0, ptr %__begin_.i.i.i.i, align 8
%__end_.i.i.i.i = getelementptr inbounds %"struct.std::__1::__bounded_iter", ptr %__begin1, i64 0, i32 2
store ptr %add.ptr.i, ptr %__end_.i.i.i.i, align 8
%cmp.not.i.i.i.i = icmp slt i64 %1, 0
br i1 %cmp.not.i.i.i.i, label %error, label %check.2
check.2:
call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %__end1) #6
%l4 = load ptr, ptr %elems, align 8
%__size_.i.i4 = getelementptr inbounds %"class.std::__1::span", ptr %elems, i64 0, i32 1
%l5 = load i64, ptr %__size_.i.i4, align 8
%add.ptr.i5 = getelementptr inbounds i32, ptr %l4, i64 %l5
store ptr %add.ptr.i5, ptr %__end1, align 8
%__begin_.i.i.i.i6 = getelementptr inbounds %"struct.std::__1::__bounded_iter", ptr %__end1, i64 0, i32 1
store ptr %l4, ptr %__begin_.i.i.i.i6, align 8
%__end_.i.i.i.i7 = getelementptr inbounds %"struct.std::__1::__bounded_iter", ptr %__end1, i64 0, i32 2
store ptr %add.ptr.i5, ptr %__end_.i.i.i.i7, align 8
%cmp.not.i.i.i.i8 = icmp slt i64 %l5, 0
br i1 %cmp.not.i.i.i.i8, label %error, label %for.cond
error:
call void @error()
ret void
for.cond:
%l8 = load ptr, ptr %__begin1, align 8
%l9 = load ptr, ptr %__end1, align 8
%cmp.i = icmp ne ptr %l8, %l9
br i1 %cmp.i, label %for.body, label %for.cond.cleanup
for.cond.cleanup: ; preds = %for.cond
call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %__end1)
call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %__begin1)
ret void
for.body: ; preds = %for.cond
%l10 = load ptr, ptr %__begin1, align 8
%__begin_.i.i = getelementptr inbounds %"struct.std::__1::__bounded_iter", ptr %__begin1, i64 0, i32 1
%l11 = load ptr, ptr %__begin_.i.i, align 8
%cmp.not.i.i = icmp uge ptr %l10, %l11
%__end_.i.i = getelementptr inbounds %"struct.std::__1::__bounded_iter", ptr %__begin1, i64 0, i32 2
%l12 = load ptr, ptr %__end_.i.i, align 8
%cmp2.i.i = icmp ult ptr %l10, %l12
%sel = select i1 %cmp.not.i.i, i1 %cmp2.i.i, i1 false
br i1 %sel, label %for.latch, label %error
for.latch:
call void @use(ptr noundef nonnull align 4 dereferenceable(4) %l10)
%l = load ptr, ptr %__begin1, align 8
%incdec.ptr.i = getelementptr inbounds i32, ptr %l, i64 1
store ptr %incdec.ptr.i, ptr %__begin1, align 8
br label %for.cond
}
declare void @error()
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture)
declare void @use(ptr noundef nonnull align 4 dereferenceable(4))
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture)
; -------------------------------------------------------------------------
; Test case for runtime check removal when accessing vector elements with
; hardened glibc++ (PR63125)
%Vector_base = type { %Vector_impl }
%Vector_impl = type { %Vector_impl_data }
%Vector_impl_data = type { ptr, ptr, ptr }
define void @foo(ptr noundef nonnull align 8 dereferenceable(24) noalias %vec) #0 {
; CHECK-LABEL: define void @foo
; CHECK-SAME: (ptr noalias noundef nonnull readonly align 8 captures(none) dereferenceable(24) [[VEC:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[_M_FINISH_I_I:%.*]] = getelementptr inbounds nuw i8, ptr [[VEC]], i64 8
; CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[_M_FINISH_I_I]], align 8, !tbaa [[TBAA0:![0-9]+]]
; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[VEC]], align 8, !tbaa [[TBAA5:![0-9]+]]
; CHECK-NEXT: [[SUB_PTR_LHS_CAST_I_I:%.*]] = ptrtoint ptr [[TMP0]] to i64
; CHECK-NEXT: [[SUB_PTR_RHS_CAST_I_I:%.*]] = ptrtoint ptr [[TMP1]] to i64
; CHECK-NEXT: [[SUB_PTR_SUB_I_I:%.*]] = sub i64 [[SUB_PTR_LHS_CAST_I_I]], [[SUB_PTR_RHS_CAST_I_I]]
; CHECK-NEXT: [[SUB_PTR_DIV_I_I:%.*]] = ashr exact i64 [[SUB_PTR_SUB_I_I]], 3
; CHECK-NEXT: [[CMP_NOT9:%.*]] = icmp eq ptr [[TMP0]], [[TMP1]]
; CHECK-NEXT: br i1 [[CMP_NOT9]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY:%.*]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: ret void
; CHECK: for.body:
; CHECK-NEXT: [[I_010:%.*]] = phi i64 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[ADD_PTR_I:%.*]] = getelementptr inbounds double, ptr [[TMP1]], i64 [[I_010]]
; CHECK-NEXT: [[TMP2:%.*]] = load double, ptr [[ADD_PTR_I]], align 8
; CHECK-NEXT: [[ADD:%.*]] = fadd double [[TMP2]], 1.000000e+00
; CHECK-NEXT: store double [[ADD]], ptr [[ADD_PTR_I]], align 8
; CHECK-NEXT: [[INC]] = add nuw i64 [[I_010]], 1
; CHECK-NEXT: [[CMP_NOT:%.*]] = icmp eq i64 [[INC]], [[SUB_PTR_DIV_I_I]]
; CHECK-NEXT: br i1 [[CMP_NOT]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]]
;
entry:
%vec.addr = alloca ptr, align 8
%count = alloca i64, align 8
%i = alloca i64, align 8
store ptr %vec, ptr %vec.addr, align 8
call void @llvm.lifetime.start.p0(i64 8, ptr %count)
%0 = load ptr, ptr %vec.addr, align 8
%call = call noundef i64 @alloc(ptr noundef nonnull align 8 dereferenceable(24) %0)
store i64 %call, ptr %count, align 8
call void @llvm.lifetime.start.p0(i64 8, ptr %i)
store i64 0, ptr %i, align 8
br label %for.cond
for.cond:
%1 = load i64, ptr %i, align 8
%2 = load i64, ptr %count, align 8
%cmp = icmp ne i64 %1, %2
br i1 %cmp, label %for.body, label %for.cond.cleanup
for.cond.cleanup:
call void @llvm.lifetime.end.p0(i64 8, ptr %i)
br label %for.end
for.body:
%3 = load ptr, ptr %vec.addr, align 8
%4 = load i64, ptr %i, align 8
%call1 = call noundef nonnull align 8 dereferenceable(8) ptr @operator_acc(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %4)
%5 = load double, ptr %call1, align 8
%add = fadd double %5, 1.000000e+00
store double %add, ptr %call1, align 8
br label %for.inc
for.inc:
%6 = load i64, ptr %i, align 8
%inc = add i64 %6, 1
store i64 %inc, ptr %i, align 8
br label %for.cond
for.end:
call void @llvm.lifetime.end.p0(i64 8, ptr %count) #5
ret void
}
define internal noundef i64 @alloc(ptr noundef nonnull align 8 dereferenceable(24) %__cont) {
entry:
%__cont.addr = alloca ptr, align 8
store ptr %__cont, ptr %__cont.addr, align 8
%0 = load ptr, ptr %__cont.addr, align 8
%call = call noundef i64 @size(ptr noundef nonnull align 8 dereferenceable(24) %0) #5
ret i64 %call
}
define internal noundef nonnull align 8 dereferenceable(8) ptr @operator_acc(ptr noundef nonnull align 8 dereferenceable(24) %this, i64 noundef %__n) {
entry:
%this.addr = alloca ptr, align 8
%__n.addr = alloca i64, align 8
store ptr %this, ptr %this.addr, align 8
store i64 %__n, ptr %__n.addr, align 8
%this1 = load ptr, ptr %this.addr, align 8
br label %do.body
do.body:
%0 = load i64, ptr %__n.addr, align 8
%call = call noundef i64 @size(ptr noundef nonnull align 8 dereferenceable(24) %this1)
%cmp = icmp ult i64 %0, %call
%lnot = xor i1 %cmp, true
%conv = zext i1 %lnot to i64
%tobool = icmp ne i64 %conv, 0
br i1 %tobool, label %if.then, label %if.end
if.then:
call void @abort() readnone
unreachable
if.end:
br label %do.cond
do.cond:
br label %do.end
do.end:
%_M_impl = getelementptr inbounds %Vector_base, ptr %this1, i32 0, i32 0
%_M_start = getelementptr inbounds %Vector_impl_data, ptr %_M_impl, i32 0, i32 0
%1 = load ptr, ptr %_M_start, align 8, !tbaa !0
%2 = load i64, ptr %__n.addr, align 8, !tbaa !5
%add.ptr = getelementptr inbounds double, ptr %1, i64 %2
ret ptr %add.ptr
}
define internal noundef i64 @size(ptr noundef nonnull align 8 dereferenceable(24) %this) {
entry:
%this.addr = alloca ptr, align 8
store ptr %this, ptr %this.addr, align 8
%this1 = load ptr, ptr %this.addr, align 8
%_M_impl = getelementptr inbounds %Vector_base, ptr %this1, i32 0, i32 0
%_M_finish = getelementptr inbounds %Vector_impl_data, ptr %_M_impl, i32 0, i32 1
%0 = load ptr, ptr %_M_finish, align 8, !tbaa !7
%_M_impl2 = getelementptr inbounds %Vector_base, ptr %this1, i32 0, i32 0
%_M_start = getelementptr inbounds %Vector_impl_data, ptr %_M_impl2, i32 0, i32 0
%1 = load ptr, ptr %_M_start, align 8, !tbaa !0
%sub.ptr.lhs.cast = ptrtoint ptr %0 to i64
%sub.ptr.rhs.cast = ptrtoint ptr %1 to i64
%sub.ptr.sub = sub i64 %sub.ptr.lhs.cast, %sub.ptr.rhs.cast
%sub.ptr.div = sdiv exact i64 %sub.ptr.sub, 8
ret i64 %sub.ptr.div
}
declare void @abort()
; -------------------------------------------------------------------------
; Test case for runtime check removal when accessing vector elements with
; hardened glibc++ and a signed induction variable.
; https://github.com/llvm/llvm-project/issues/63126
define void @loop_with_signed_induction(ptr noundef nonnull align 8 dereferenceable(24) %vec) {
; CHECK-LABEL: define void @loop_with_signed_induction
; CHECK-SAME: (ptr noundef nonnull readonly align 8 captures(none) dereferenceable(24) [[VEC:%.*]]) local_unnamed_addr #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[_M_FINISH_I_I:%.*]] = getelementptr inbounds nuw i8, ptr [[VEC]], i64 8
; CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[_M_FINISH_I_I]], align 8, !tbaa [[TBAA0]]
; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[VEC]], align 8, !tbaa [[TBAA5]]
; CHECK-NEXT: [[SUB_PTR_LHS_CAST_I_I:%.*]] = ptrtoint ptr [[TMP0]] to i64
; CHECK-NEXT: [[SUB_PTR_RHS_CAST_I_I:%.*]] = ptrtoint ptr [[TMP1]] to i64
; CHECK-NEXT: [[SUB_PTR_SUB_I_I:%.*]] = sub i64 [[SUB_PTR_LHS_CAST_I_I]], [[SUB_PTR_RHS_CAST_I_I]]
; CHECK-NEXT: [[SUB_PTR_DIV_I_I:%.*]] = ashr exact i64 [[SUB_PTR_SUB_I_I]], 3
; CHECK-NEXT: [[CMP9:%.*]] = icmp sgt i64 [[SUB_PTR_DIV_I_I]], 0
; CHECK-NEXT: br i1 [[CMP9]], label [[FOR_BODY:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: ret void
; CHECK: for.body:
; CHECK-NEXT: [[I_010:%.*]] = phi i64 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[ADD_PTR_I:%.*]] = getelementptr inbounds nuw double, ptr [[TMP1]], i64 [[I_010]]
; CHECK-NEXT: [[TMP2:%.*]] = load double, ptr [[ADD_PTR_I]], align 8, !tbaa [[TBAA6:![0-9]+]]
; CHECK-NEXT: [[ADD:%.*]] = fadd double [[TMP2]], 1.000000e+00
; CHECK-NEXT: store double [[ADD]], ptr [[ADD_PTR_I]], align 8, !tbaa [[TBAA6]]
; CHECK-NEXT: [[INC]] = add nuw nsw i64 [[I_010]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[INC]], [[SUB_PTR_DIV_I_I]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP]]
;
entry:
%vec.addr = alloca ptr, align 8
%count = alloca i64, align 8
%i = alloca i64, align 8
store ptr %vec, ptr %vec.addr, align 8
call void @llvm.lifetime.start.p0(i64 8, ptr %count)
%0 = load ptr, ptr %vec.addr, align 8
%call = call noundef i64 @alloc(ptr noundef nonnull align 8 dereferenceable(24) %0)
store i64 %call, ptr %count, align 8
call void @llvm.lifetime.start.p0(i64 8, ptr %i)
store i64 0, ptr %i, align 8
br label %for.cond
for.cond:
%1 = load i64, ptr %i, align 8
%2 = load i64, ptr %count, align 8
%cmp = icmp slt i64 %1, %2
br i1 %cmp, label %for.body, label %for.cond.cleanup
for.cond.cleanup:
call void @llvm.lifetime.end.p0(i64 8, ptr %i)
br label %for.end
for.body:
%3 = load ptr, ptr %vec.addr, align 8
%4 = load i64, ptr %i, align 8
%call1 = call noundef nonnull align 8 dereferenceable(8) ptr @operator_acc(ptr noundef nonnull align 8 dereferenceable(24) %3, i64 noundef %4)
%5 = load double, ptr %call1, align 8, !tbaa !8
%add = fadd double %5, 1.000000e+00
store double %add, ptr %call1, align 8, !tbaa !8
br label %for.inc
for.inc:
%6 = load i64, ptr %i, align 8
%inc = add nsw i64 %6, 1
store i64 %inc, ptr %i, align 8
br label %for.cond
for.end:
call void @llvm.lifetime.end.p0(i64 8, ptr %count)
ret void
}
; -------------------------------------------------------------------------
; Test case for runtime check removal when accessing elements in a nested loop
; (PR64881)
define void @monkey(ptr noundef %arr, i32 noundef %len) {
; CHECK-LABEL: define void @monkey
; CHECK-SAME: (ptr noundef captures(none) [[ARR:%.*]], i32 noundef [[LEN:%.*]]) local_unnamed_addr #[[ATTR1:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP8:%.*]] = icmp ugt i32 [[LEN]], 1
; CHECK-NEXT: br i1 [[CMP8]], label [[FOR_BODY4_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK: for.body4.preheader:
; CHECK-NEXT: [[I_09:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_COND_CLEANUP3:%.*]] ], [ 1, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY4:%.*]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: ret void
; CHECK: for.cond.cleanup3:
; CHECK-NEXT: [[INC]] = add nuw i32 [[I_09]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[INC]], [[LEN]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY4_PREHEADER]], label [[FOR_COND_CLEANUP]]
; CHECK: for.body4:
; CHECK-NEXT: [[K_07:%.*]] = phi i32 [ [[DEC:%.*]], [[FOR_BODY4]] ], [ [[I_09]], [[FOR_BODY4_PREHEADER]] ]
; CHECK-NEXT: [[IDX_EXT_I:%.*]] = zext i32 [[K_07]] to i64
; CHECK-NEXT: [[ADD_PTR_I:%.*]] = getelementptr inbounds nuw i32, ptr [[ARR]], i64 [[IDX_EXT_I]]
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ADD_PTR_I]], align 4
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP0]], 1
; CHECK-NEXT: store i32 [[ADD]], ptr [[ADD_PTR_I]], align 4
; CHECK-NEXT: [[DEC]] = add i32 [[K_07]], -1
; CHECK-NEXT: [[CMP2_NOT:%.*]] = icmp eq i32 [[DEC]], 0
; CHECK-NEXT: br i1 [[CMP2_NOT]], label [[FOR_COND_CLEANUP3]], label [[FOR_BODY4]]
;
entry:
%arr.addr = alloca ptr, align 8
%len.addr = alloca i32, align 4
%i = alloca i32, align 4
%cleanup.dest.slot = alloca i32, align 4
%k = alloca i32, align 4
store ptr %arr, ptr %arr.addr, align 8
store i32 %len, ptr %len.addr, align 4
call void @llvm.lifetime.start.p0(i64 4, ptr %i) #3
store i32 1, ptr %i, align 4
br label %for.cond
for.cond: ; preds = %for.inc5, %entry
%0 = load i32, ptr %i, align 4
%1 = load i32, ptr %len.addr, align 4
%cmp = icmp ult i32 %0, %1
br i1 %cmp, label %for.body, label %for.cond.cleanup
for.cond.cleanup: ; preds = %for.cond
store i32 2, ptr %cleanup.dest.slot, align 4
call void @llvm.lifetime.end.p0(i64 4, ptr %i) #3
br label %for.end6
for.body: ; preds = %for.cond
call void @llvm.lifetime.start.p0(i64 4, ptr %k) #3
%2 = load i32, ptr %i, align 4
store i32 %2, ptr %k, align 4
br label %for.cond1
for.cond1: ; preds = %for.inc, %for.body
%3 = load i32, ptr %k, align 4
%cmp2 = icmp ugt i32 %3, 0
br i1 %cmp2, label %for.body4, label %for.cond.cleanup3
for.cond.cleanup3: ; preds = %for.cond1
store i32 5, ptr %cleanup.dest.slot, align 4
call void @llvm.lifetime.end.p0(i64 4, ptr %k) #3
br label %for.end
for.body4: ; preds = %for.cond1
%4 = load ptr, ptr %arr.addr, align 8
%5 = load i32, ptr %len.addr, align 4
%6 = load i32, ptr %k, align 4
%call = call noundef ptr @at(ptr noundef %4, i32 noundef %5, i32 noundef %6)
%7 = load i32, ptr %call, align 4
%add = add nsw i32 %7, 1
store i32 %add, ptr %call, align 4
br label %for.inc
for.inc: ; preds = %for.body4
%8 = load i32, ptr %k, align 4
%dec = add i32 %8, -1
store i32 %dec, ptr %k, align 4
br label %for.cond1
for.end: ; preds = %for.cond.cleanup3
br label %for.inc5
for.inc5: ; preds = %for.end
%9 = load i32, ptr %i, align 4
%inc = add i32 %9, 1
store i32 %inc, ptr %i, align 4
br label %for.cond
for.end6: ; preds = %for.cond.cleanup
ret void
}
define internal noundef ptr @at(ptr noundef %arr, i32 noundef %len, i32 noundef %idx) {
entry:
%arr.addr = alloca ptr, align 8
%len.addr = alloca i32, align 4
%idx.addr = alloca i32, align 4
store ptr %arr, ptr %arr.addr, align 8
store i32 %len, ptr %len.addr, align 4
store i32 %idx, ptr %idx.addr, align 4
%0 = load i32, ptr %idx.addr, align 4
%1 = load i32, ptr %len.addr, align 4
%cmp = icmp uge i32 %0, %1
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
call void @abort()
unreachable
if.end: ; preds = %entry
%2 = load ptr, ptr %arr.addr, align 8
%3 = load i32, ptr %idx.addr, align 4
%idx.ext = zext i32 %3 to i64
%add.ptr = getelementptr inbounds i32, ptr %2, i64 %idx.ext
ret ptr %add.ptr
}
!0 = !{!1, !2, i64 0}
!1 = !{!"_ZTSNSt12_Vector_baseIdSaIdEE17_Vector_impl_dataE", !2, i64 0, !2, i64 8, !2, i64 16}
!2 = !{!"any pointer", !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C++ TBAA"}
!5 = !{!6, !6, i64 0}
!6 = !{!"long", !3, i64 0}
!7 = !{!1, !2, i64 8}
!8 = !{!9, !9, i64 0}
!9 = !{!"double", !3, i64 0}
|
