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

[Florian Hahn via llvm-commits]

fhahn wrote:

As for the target-independent tests, would it be sufficient to have a single one to check that EVL doesn't kick in for the simplest case?

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