[all-commits] [llvm/llvm-project] 5ec2b7: [Instruction] Speculatively undo isIdenticalToWhen...

[Roman Lebedev via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 5ec2b757cc7d37ff0d03b36ee863b0962fe78108
      https://github.com/llvm/llvm-project/commit/5ec2b757cc7d37ff0d03b36ee863b0962fe78108
  Author: Roman Lebedev <lebedev.ri at gmail.com>
  Date:   2020-08-29 (Sat, 29 Aug 2020)

  Changed paths:
    M llvm/lib/IR/Instruction.cpp
    M llvm/lib/Transforms/Utils/Local.cpp

  Log Message:
  -----------
  [Instruction] Speculatively undo isIdenticalToWhenDefined() PHI handling changes

The stage2-stage3 differences persist even without instcombine-based
PHI CSE, so this is the only possible reason.