[llvm] [RISCV] Lower vector_reverse for zvfhmin/zvfbfmin (PR #110218)

[Philip Reames via llvm-commits]

https://github.com/preames requested changes to this pull request.

The vrgaher change here seems related to any shuffle we lower to a vrgather, is there something which makes reverse special here?  I'd rather see this tested via normal shuffle lowering if not.  

https://github.com/llvm/llvm-project/pull/110218