[all-commits] [llvm/llvm-project] 079c52: [SCEV] Try simplifying phi before createNodeFromSe...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 079c525f206228c3343048bb5a74a8e9a428de1a
      https://github.com/llvm/llvm-project/commit/079c525f206228c3343048bb5a74a8e9a428de1a
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2023-04-27 (Thu, 27 Apr 2023)

  Changed paths:
    M llvm/lib/Analysis/ScalarEvolution.cpp
    M llvm/test/Analysis/ScalarEvolution/trivial-phis.ll
    M llvm/test/Transforms/IndVarSimplify/lftr-pr20680.ll

  Log Message:
  -----------
  [SCEV] Try simplifying phi before createNodeFromSelectLikePHI()

Sometimes a phi can both be trivial and match the
createNodeFromSelectLikePHI() fold. In that case it is generally
more profitable to look through the phi node.