[PATCH] D67849: [InstCombine] (a+b) < a && (a+b) != 0 -> (0-b) < a iff a/b != 0 (PR43259)

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri updated this revision to Diff 221503.
lebedev.ri marked 2 inline comments as done.
lebedev.ri edited the summary of this revision.
lebedev.ri added a comment.

We only need to know that one of the values is non-zero, and we must negate that specific value!
https://rise4fun.com/Alive/slnN


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D67849/new/

https://reviews.llvm.org/D67849

Files:
  llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
  llvm/test/Transforms/InstCombine/result-of-add-of-negative-is-non-zero-and-no-underflow.ll

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