[PATCH] D151934: InstCombine: Recognize fneg when performed as bitcasted integer

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n added a comment.

imo should require a cast back to float. If we are keeping it as an integer
I think `xor` is more recognizable/canonical.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D151934/new/

https://reviews.llvm.org/D151934