[PATCH] D78439: [AVR] Fix miscompilation of zext + add

[Ayke via Phabricator via llvm-commits]

aykevl added a comment.

I suspect the patterns are technically a bug, but may not show up in practice if they're all buggy in the exact same way. If all additions in a chain are replaced with subtractions, then it should work.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D78439/new/

https://reviews.llvm.org/D78439