[all-commits] [llvm/llvm-project] 358271: [InstCombine] remove shuffle mask canonicalization...

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  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 35827164c45ed11c279301a98df96dfa2747d8f7
      https://github.com/llvm/llvm-project/commit/35827164c45ed11c279301a98df96dfa2747d8f7
  Author: Sanjay Patel <spatel at rotateright.com>
  Date:   2019-11-25 (Mon, 25 Nov 2019)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp

  Log Message:
  -----------
  [InstCombine] remove shuffle mask canonicalization that creates undef elements

This is NFC-intended because SimplifyDemandedVectorElts() does the same
transform later. As discussed in D70641, we may want to change that
behavior, so we need to isolate where it happens.