[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.

In D143786#4152492 <https://reviews.llvm.org/D143786#4152492>, @pengfei wrote:

> Is this substituted by D144570 <https://reviews.llvm.org/D144570>?

No, the x86fixupinsttuning pass is only meant for guaranteed replacements. There is not shuffle that is always replaceable with shifts.


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