[PATCH] D85446: [InstCombine] Add vector support to mul(add(x,c),negpow2) -> mul(sub(-c,x),pow2) folds

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: lebedev.ri, spatel.
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Generalize the negated pow2 folds to support vectors - it looks like some other shl(add(x,c1),c2) -> add(shl(x,c2),c3) style folds are conflicting but only affect scalar / non-uniform vectors - I'll address this in a future patch.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D85446

Files:
  llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
  llvm/test/Transforms/InstCombine/mul.ll

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