[PATCH] D52392: [X86] For lzcnt/tzcnt intrinsics use cttz/ctlz intrinsics with zero_undef flag set to false.

[Simon Pilgrim via Phabricator via llvm-commits]

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

LGTM, thanks for checking.

Please update the *-intrinsics-fast-isel.ll llvm test cases to match the *-builtins.c changes.


Repository:
  rC Clang

https://reviews.llvm.org/D52392