[PATCH] D68239: [InstCombine] dropRedundantMaskingOfLeftShiftInput(): propagate undef shift amounts

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri updated this revision to Diff 223329.
lebedev.ri marked 5 inline comments as done.
lebedev.ri added a comment.

Addressed review notes.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D68239/new/

https://reviews.llvm.org/D68239

Files:
  llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp
  llvm/test/Transforms/InstCombine/partally-redundant-left-shift-input-masking-variant-a.ll
  llvm/test/Transforms/InstCombine/partally-redundant-left-shift-input-masking-variant-b.ll
  llvm/test/Transforms/InstCombine/partally-redundant-left-shift-input-masking-variant-c.ll
  llvm/test/Transforms/InstCombine/partally-redundant-left-shift-input-masking-variant-d.ll
  llvm/test/Transforms/InstCombine/partally-redundant-left-shift-input-masking-variant-e.ll

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