[PATCH] D77193: [X86] Add SERIALIZE instruction.

[Craig Topper via Phabricator via cfe-commits]

craig.topper accepted this revision.
craig.topper added a comment.
This revision is now accepted and ready to land.

LGTM


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D77193/new/

https://reviews.llvm.org/D77193