[clang] [llvm] [llvm][clang] Add intrinsic support for cbo.zero instruction (Zicboz ISA extension) (PR #164822)

[Sam Elliott via llvm-commits]

lenary wrote:

Is there a proposal for this on the [C API Doc](https://github.com/riscv-non-isa/riscv-c-api-doc)? Without it we shouldn't land this.

Maybe we shouldn't have this at all (instead of making people use inline asm)? What optimisations would we expect with this instruction, that means we couldn't use inline asm?

https://github.com/llvm/llvm-project/pull/164822