[llvm] [RISCV] Add vector hasAndNot to enable optimizations (PR #132438)

[Philip Reames via llvm-commits]

https://github.com/preames commented:

Non blocking for this patch, but make sure you check the codegen for the fixed vector case too.  We sometimes hit different lowering paths for fixed and scalable and I only see a scalable test changing here.

https://github.com/llvm/llvm-project/pull/132438