[PATCH] D42724: [X86] Don't make 512-bit vectors legal when preferred vector width is 256 bits and 512 bits aren't required

[Eric Christopher via Phabricator via llvm-commits]

echristo added a comment.

LGTM for now, but the set of function attributes being passed into the subtarget is getting a little awkward so we should come up with some better way to encompass them.


Repository:
  rL LLVM

https://reviews.llvm.org/D42724