[llvm] [LoopVectorize] Allow Early-Exit Loop Vectorization with EVL (PR #130918)

[David Sherwood via llvm-commits]

https://github.com/david-arm requested changes to this pull request.

As mentioned in my most recent comment, the vector latch branch condition is incorrect when using the tail-folding style that requires calling get.active.lane.mask.

https://github.com/llvm/llvm-project/pull/130918