[all-commits] [llvm/llvm-project] c23aef: [NFC][InstCombine] visitPHINode(): cleanup PHI CSE...

[Roman Lebedev via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: c23aefd7c38c9413a23fee3664655a10f4a2f41a
      https://github.com/llvm/llvm-project/commit/c23aefd7c38c9413a23fee3664655a10f4a2f41a
  Author: Roman Lebedev <lebedev.ri at gmail.com>
  Date:   2020-08-31 (Mon, 31 Aug 2020)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp
    M llvm/test/Transforms/InstCombine/phi-cse.ll
    M llvm/test/Transforms/LoopVectorize/reduction.ll

  Log Message:
  -----------
  [NFC][InstCombine] visitPHINode(): cleanup PHI CSE instruction replacement

As @nikic is pointing out in https://reviews.llvm.org/rGbf21ce7b908e#inline-4647
this must be sufficient otherwise `EliminateDuplicatePHINodes()`
would have hit issues with it already.