[llvm] [clang] [RISCV] CodeGen of RVE and ilp32e/lp64e ABIs (PR #76777)

[via cfe-commits]

koute wrote:

> Can you fire a PR for these changes? I think we should support it in compiler-rt once we have merged this PR.

Once this PR is merged, sure, I can make a PR.

https://github.com/llvm/llvm-project/pull/76777