[PATCH] D58632: [X86] Improve lowering of idemptotent RMW operations

[Sam McCall via Phabricator via llvm-commits]

sammccall added a comment.

Yes, that fix works for us. Thanks!

It'd be great to get it landed or a revert of this patch soon if possible.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D58632/new/

https://reviews.llvm.org/D58632