[PATCH] D83156: [X86] Teach lowerShuffleAsBlend to use bit blend for v16i8/v32i8/v16i16 when avx512vl is enabled but not avx512bw.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

In D83156#2131280 <https://reviews.llvm.org/D83156#2131280>, @craig.topper wrote:

> Thanks Simon. Thoughts on whether we should do this with BWI too? I think the bit blend would also work better with shuffle combining?


Yes, my only concern is that currently we don't anything to combine variable select patterns OTHER than bit blend - ternlog/vselect are neither handled as faux shuffles or combined to at the moment which they probably need to be.


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