[all-commits] [llvm/llvm-project] c601be: [coroutines] Introduce [[clang::coro_return_type]]...

[Utkarsh Saxena via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c601be9c8400929f7b5c015a2bceae57e3aab550
      https://github.com/llvm/llvm-project/commit/c601be9c8400929f7b5c015a2bceae57e3aab550
  Author: Utkarsh Saxena <usx at google.com>
  Date:   2023-11-17 (Fri, 17 Nov 2023)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/include/clang/Basic/Attr.td
    M clang/include/clang/Basic/AttrDocs.td
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/include/clang/Sema/Sema.h
    M clang/lib/Sema/SemaDecl.cpp
    M clang/test/Misc/pragma-attribute-supported-attributes-list.test
    A clang/test/SemaCXX/coro-return-type-and-wrapper.cpp

  Log Message:
  -----------
  [coroutines] Introduce [[clang::coro_return_type]] and [[clang::coro_wrapper]] (#71945)

First step in the implementation of
[RFC](https://discourse.llvm.org/t/rfc-lifetime-bound-check-for-parameters-of-coroutines/74253)
([final approved
doc](https://docs.google.com/document/d/1hkfXHuvIW1Yv5LI-EIkpWzdWgIoUlzO6Zv_KJpknQzM/edit)).

This introduces the concepts of a **coroutine return type** and explicit
**coroutine wrapper** functions.

---------

Co-authored-by: Chuanqi Xu <yedeng.yd at linux.alibaba.com>