[all-commits] [llvm/llvm-project] fa5884: [GVN] Always require LoopInfo

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fa5884770ab240139f33a8b2be801673ca21b9c0
      https://github.com/llvm/llvm-project/commit/fa5884770ab240139f33a8b2be801673ca21b9c0
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2023-10-11 (Wed, 11 Oct 2023)

  Changed paths:
    M llvm/include/llvm/Transforms/Scalar/GVN.h
    M llvm/lib/Transforms/Scalar/GVN.cpp

  Log Message:
  -----------
  [GVN] Always require LoopInfo

GVN behavior depends on LoopInfo in multiple ways, most notably
as a dependency for loop load PRE. As this is not a preserved-only
analysis, using a cached analysis is inappropriate.

In the actual optimization pipeline LoopInfo is always available
at the point GVN runs, but this will ensure it stays this way
even if the pipeline changes.