[clang] [llvm] [WIP][RISC-V] prototyping support for Zvbc32e and Zvkgs (PR #128243)

[Nicolas Brunie via llvm-commits]

nibrunieAtSi5 wrote:

Actually, it looks like most of the support may have already been added as part of https://github.com/llvm/llvm-project/commit/a80a90e34b1f26422ebf56e922abe2c193607c81

https://github.com/llvm/llvm-project/pull/128243