[llvm] [VPlan] Enable vectorization of early-exit loops with unit-stride fault-only-first loads (PR #151300)

[Luke Lau via llvm-commits]

https://github.com/lukel97 commented:

I just took a brief look at this, I'll hopefully have more time to give it a closer review next week. 

>From what I understand we currently only support early exit loops without tail folding. Do we have a plan on how to support tail folding eventually and how that would interact with vp.load.ff?

https://github.com/llvm/llvm-project/pull/151300