[PATCH] D48768: [X86] When have BMI2, prefer shifts to clear low/high bits, rather than variable mask.

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

In https://reviews.llvm.org/D48768#1155724, @spatel wrote:

> This looks like the right default for x86 based on size of the code and opportunities for other combines (and as noted, it's what we would have produced anyway until very recently), so LGTM.


Thank you for the review!


Repository:
  rL LLVM

https://reviews.llvm.org/D48768