[clang] [llvm] [clang][RISCV] Emit RISCV function-signature-based CFI label in llvm::Function metadata (PR #111661)

[Kito Cheng via cfe-commits]

https://github.com/kito-cheng commented:

A high level suggestion is don't hash that until MC layer, so that we can easier debug and observe that from the IR level, so that means we can drop the hash part from this PR.

https://github.com/llvm/llvm-project/pull/111661