[PATCH] D63405: GlobalISel: Don't lose fneg flags when lowering to fsub

[Michael Berg via Phabricator via llvm-commits]

mcberg2017 added a comment.

So I agree, but I think there should be a target specific combine with guards for Unsafe and nsz and this legalization case (for those who do not have it).


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D63405/new/

https://reviews.llvm.org/D63405