[PATCH] D155622: [X86] Recognize standalone `(1 << nbits) - 1` pattern as bzhi

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n accepted this revision.
goldstein.w.n added a comment.
This revision is now accepted and ready to land.

LGTM.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D155622/new/

https://reviews.llvm.org/D155622