[PATCH] D88783: [InstCombine] matchFunnelShift - fold or(shl(a,x),lshr(b,sub(bw,x))) -> fshl(a,b,x) iff x < bw

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon updated this revision to Diff 297257.
RKSimon edited the summary of this revision.
RKSimon added a comment.

Improve comment describing the limits of the fold.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D88783/new/

https://reviews.llvm.org/D88783

Files:
  llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
  llvm/test/Transforms/InstCombine/funnel.ll
  llvm/test/Transforms/InstCombine/rotate.ll

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