[clang] [llvm] [RISCV] Inline Assembly Support for GPR Pairs ('Pr') (PR #112983)

[Sam Elliott via llvm-commits]

lenary wrote:

I think the first thing I might do tomorrow is some of the NFC cleanups and commenting that is in this PR.

I'm not sure the register class renaming can happen quite yet.

https://github.com/llvm/llvm-project/pull/112983