[PATCH] D55565: [X86] Don't emit MULX by default with BMI2

[Andrea Di Biagio via Phabricator via llvm-commits]

andreadb added a comment.

I don't have a strong opinion on this.

If converting a MUL to a MULX can save a split/spill, then we should do that. This is an interesting project. As long as we have a bug to track this work, then I am fine with this decision. Not sure if other people agree.


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  https://reviews.llvm.org/D55565/new/

https://reviews.llvm.org/D55565