[PATCH] D128570: [ISel] Round down mask bit when merge undef(s) for DAG combine

[Xiang Zhang via Phabricator via llvm-commits]

xiangzhangllvm updated this revision to Diff 441349.
xiangzhangllvm added a comment.

Address Simon's comments.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D128570/new/

https://reviews.llvm.org/D128570

Files:
  llvm/include/llvm/ADT/APInt.h
  llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
  llvm/lib/Support/APInt.cpp
  llvm/test/CodeGen/X86/fshl-splat-undef.ll
  llvm/unittests/ADT/APIntTest.cpp

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