[llvm] [LV] Use original trip-count as the vector-trip-count if use predicated EVL instructions for tail-folding. (PR #132675)

[Mel Chen via llvm-commits]

https://github.com/Mel-Chen commented:

I had a similar patch #89580 a long time ago, but you can still take this. :)

https://github.com/llvm/llvm-project/pull/132675