[PATCH] D109726: [X86] Improve `matchBinaryShuffle()`'s `BLEND` lowering with per-element all-zero/all-ones knowledge

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

In D109726#2999987 <https://reviews.llvm.org/D109726#2999987>, @RKSimon wrote:

> Why couldn't this be put in more generic ISD::OR combines somewhere? Possibly TargetLowering::SimplifyDemandedVectorElts?

What do you mean by 'it'? `blend`->`or` lowering?


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