[PATCH] D42044: X86: Utilize ZeroableElements for canWidenShuffleElements

[Zvi Rackover via Phabricator via llvm-commits]

zvi updated this revision to Diff 132777.
zvi added a comment.

Rebase + ping


Repository:
  rL LLVM

https://reviews.llvm.org/D42044

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/vector-shuffle-256-v32.ll

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