[llvm] [RISCV] Add FPR16 regbank and start legalizing f16 operations for Zfh. (PR #96582)

[Yingwei Zheng via llvm-commits]

https://github.com/dtcxzyw approved this pull request.

LGTM. Thank you!
Wait for an additional approval from other reviewers.


https://github.com/llvm/llvm-project/pull/96582