[llvm] [LV, VP]VP intrinsics support for the Loop Vectorizer + adding new tail-folding mode using EVL. (PR #76172)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:

Thanks for the updates!

A few more comments inline, the only main thing that remains from my side is potentially clarifying the handling of tail-folding styles.

> Currently it won't work for PPC, since it has some specific checks in TTI. We (or PPC developers) can enable it later.

I see, thanks! Left a comment inline.

(If possible it would be good to avoid rebase & force push for updates to the PR as recommended here https://llvm.org/docs/GitHub.html#rebasing-pull-requests-and-force-pushes)

https://github.com/llvm/llvm-project/pull/76172