[clang] [llvm] [Clang] C++20 Coroutines: Introduce Frontend Attribute [[clang::coro_await_elidable]] (PR #99282)

[Chuanqi Xu via cfe-commits]

https://github.com/ChuanqiXu9 commented:

LGTM, except the CodeGen's change. I am still slightly concerned about the maintainability. Let's try to give @efriedma-quic another two weeks.

https://github.com/llvm/llvm-project/pull/99282