[all-commits] [llvm/llvm-project] 38b9d3: [C++20][Clang] P2468R2 The Equality Operator You A...

[Utkarsh Saxena via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 38b9d313e6945804fffc654f849cfa05ba2c713d
      https://github.com/llvm/llvm-project/commit/38b9d313e6945804fffc654f849cfa05ba2c713d
  Author: Utkarsh Saxena <usx at google.com>
  Date:   2022-10-06 (Thu, 06 Oct 2022)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/include/clang/Sema/Overload.h
    M clang/lib/Sema/SemaDeclCXX.cpp
    M clang/lib/Sema/SemaOverload.cpp
    M clang/test/CXX/over/over.match/over.match.funcs/over.match.oper/p3-2a.cpp

  Log Message:
  -----------
  [C++20][Clang] P2468R2 The Equality Operator You Are Looking For

Implement
https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p2468r2.html.

Primarily we now accept
```
template<typename T> struct CRTPBase {
  bool operator==(const T&) const;
  bool operator!=(const T&) const;
};
struct CRTP : CRTPBase<CRTP> {};
bool cmp_crtp = CRTP() == CRTP();
bool cmp_crtp2 = CRTP() != CRTP();
```

Differential Revision: https://reviews.llvm.org/D134529