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

[Alexey Bataev via llvm-commits]

alexey-bataev wrote:

> In the process of going over this again, posting a first set of comments to pipeline the work.
> 
> The second paragraph of the commit message appears broken at the end.

Fixed, no idea what's happened

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