[PATCH] D155652: AMDGPU: Fold fsub [+-0] into fneg when folding source modifiers

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

This is broken if the source modifier user is a select, need to filter out the non-canonicalizing cases


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D155652/new/

https://reviews.llvm.org/D155652