[PATCH] D94671: [DAG] visitVECTOR_SHUFFLE - MergeInnerShuffle - improve shuffle(shuffle(x,y),shuffle(x,y)) merging

[Dave Green via Phabricator via llvm-commits]

dmgreen accepted this revision.
dmgreen added a comment.
This revision is now accepted and ready to land.

LGTM. We sometimes generate a lot of shuffles in an attempt to do lane interleaving and I know the simplification of them isn't always what it could be once all the lowering has happened. I thought more happened through simplifying buildvectors but apparently not. This looks like a good continuation to the existing code.


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https://reviews.llvm.org/D94671