[PATCH] D139275: [SimplifyCFG] `FoldBranchToCommonDest()`: deal with mismatched IV's in PHI's in common successor block

[Sam Tebbs via Phabricator via llvm-commits]

samtebbs added a comment.

We've also seen lots of large regressions for a variety of ARM CPUs with the original patch and that weren't fixed by any updates. I'll sort out a reproducer for you as soon as I can.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D139275/new/

https://reviews.llvm.org/D139275