[PATCH] D143786: [X86] Add `TuningPreferShiftShuffle` for when Shifts are preferable to shuffles.

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n added a comment.

@RKSimon this okay? D143859 <https://reviews.llvm.org/D143859> has some dependencies on this and preference is to keep in order. If you think it needs more work, however, can rebase and push D143859 <https://reviews.llvm.org/D143859> ... D144442 <https://reviews.llvm.org/D144442> first.


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  https://reviews.llvm.org/D143786/new/

https://reviews.llvm.org/D143786