[llvm] Define VP_FMINIMUMNUM and VP_FMAXIMUMNUM (PR #181084)

[YunQiang Su via llvm-commits]

wzssyqa wrote:

> Did you have a specific use case for this in mind?

I am working on standardizing these MAX/MIN operations.
MAXNUM is defined more like as maxNum in IEEE754-2008
while all of these instructions RISC-V provides is IEEE754-2019 ones.

Thus I am trying to fix this problem.


https://github.com/llvm/llvm-project/pull/181084