[PATCH] D150103: [ValueTracking] Use `KnownBits` functions for `computeKnownBits` of saturating add/sub functions

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n created this revision.
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The knownbits implementation covers all the cases previously handled
by `uadd.sat`/`usub.sat` as well some additional ones. We previously
were not handling the `ssub.sat`/`sadd.sat` cases at all.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D150103

Files:
  llvm/lib/Analysis/ValueTracking.cpp
  llvm/test/Analysis/ValueTracking/knownbits-sat-addsub.ll

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