[PATCH] D103788: [InstCombine] Eliminate casts to optimize ctlz operation

[Datta Nagraj via Phabricator via llvm-commits]

datta.nagraj updated this revision to Diff 351644.
datta.nagraj added a comment.

Do the opt only if the difference in bitwidth of zext src and dst is less than log2


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D103788/new/

https://reviews.llvm.org/D103788

Files:
  llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
  llvm/test/Transforms/InstCombine/zext-ctlz-trunc-to-ctlz-add.ll

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