[PATCH] D134605: [SLP] Add ScalarizationOverheadBuilder helper to track vector extractions

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

In D134605#3824373 <https://reviews.llvm.org/D134605#3824373>, @fhahn wrote:

> Just a heads up that I am seeing regressions on AArch64 with this patch, caused by additional vectorization. I'll provide a reproducer soon.

Cheers - I'm expecting it'll probably turn out to be a cost model issue somewhere.


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