[all-commits] [llvm/llvm-project] 7a43b3: [IndVars] Make sure header phi simplification pres...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7a43b382ce9da2c5a4196d6cf4184d2983906400
      https://github.com/llvm/llvm-project/commit/7a43b382ce9da2c5a4196d6cf4184d2983906400
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2022-07-14 (Thu, 14 Jul 2022)

  Changed paths:
    M llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
    M llvm/test/Transforms/IndVarSimplify/lcssa-preservation.ll

  Log Message:
  -----------
  [IndVars] Make sure header phi simplification preserves LCSSA form

When simplifying instructions, make sure that the replacement
preserves LCSSA form. This fixes the issue reported at:
https://reviews.llvm.org/D129293#3650851