| Issue |
52920
|
| Summary |
No-aggregate assertion in getPtrStride() triggered by LoopAccessInfo::analyzeLoop()
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
dnadlinger
|
This
```llvm
; ModuleID = 'bugpoint-reduced-simplified.bc'
source_filename = "copyto_unaliased!"
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128-ni:10:11:12:13"
target triple = "arm64-apple-darwin21.2.0"
define void @"julia_copyto_unaliased!_3275"() {
top:
br label %L69
L69: ; preds = %L69, %top
%0 = load { i64 }, { i64 }* undef
store { i64 } undef, { i64 }* undef
br i1 undef, label %L185.loopexit, label %L69
L185.loopexit: ; preds = %L69
ret void
}
```
hits an assertion with e.g. `-loop-load-elim` on 1dd5e6fed5dbfe105451277d749e3c4240b925c4, as `LoopAccessInfo::analyzeLoop` calls `getPtrStride` on the aggregate.
Immediate fix is to revert 0a00d64e322f28f5f65f5b2d507d12757883478a, which turned a previous graceful check into an assertion.
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