[llvm] [LV][POC] Use umin to avoid second-to-last iteration problems with EVL (PR #143434)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:

Thanks for sharing! On a high-level it seems like this would help simplify things by getting rid of a special case, which would be great.

I am not familiar with how important the existing functionality is for performance on RISCV cores, IIRC when the support was added initially the understanding was that it would be beneficial, so it would be great for people familiar with the actual HW implementations to chime in.

https://github.com/llvm/llvm-project/pull/143434