[PATCH] D104472: [ValueTracking] look through bitcast of vector in computeKnownBits

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 353020.
spatel added a comment.

Patch updated - no logic changes from earlier rev, but:

1. Make code comment more extensive (I'm speculating that this version is better than what I had before. If so, I can update the SDAG comment too; if not, I can paste in the existing comment from SDAG.)
2. Use KnownBits.insertBits() to reduce code.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D104472/new/

https://reviews.llvm.org/D104472

Files:
  llvm/lib/Analysis/ValueTracking.cpp
  llvm/test/Transforms/InstCombine/X86/x86-vector-shifts.ll
  llvm/test/Transforms/InstSimplify/shift-knownbits.ll

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