[PATCH] D151540: [KnownBits] Add fast-path for shl with unknown shift amount

[Nikita Popov via Phabricator via llvm-commits]

nikic updated this revision to Diff 526022.
nikic added a comment.

Remove redundant handling for poison cases, use extractBitsAsZExtValue.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D151540/new/

https://reviews.llvm.org/D151540

Files:
  llvm/lib/Support/KnownBits.cpp

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