[all-commits] [llvm/llvm-project] c146df: [clang][DebugInfo] Emit DW_AT_deleted on any delet...

[Michael Buch via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c146df9618764d5548c38ce61edc45147094b26f
      https://github.com/llvm/llvm-project/commit/c146df9618764d5548c38ce61edc45147094b26f
  Author: Michael Buch <michaelbuch12 at gmail.com>
  Date:   2023-06-20 (Tue, 20 Jun 2023)

  Changed paths:
    M clang/lib/CodeGen/CGDebugInfo.cpp
    M clang/test/CodeGenCXX/debug-info-deleted.cpp
    M llvm/test/DebugInfo/X86/DW_AT_deleted.ll

  Log Message:
  -----------
  [clang][DebugInfo] Emit DW_AT_deleted on any deleted member function

Currently we emit `DW_AT_deleted` for `deleted` special-member
functions (i.e., ctors/dtors). However, in C++ one can mark any
member function as deleted. This patch expands the set of member
functions for which we emit `DW_AT_deleted`.

The DWARFv5 spec section 5.7.8 says:
```
<non-normative>
In C++, a member function may be declared as deleted. This prevents the compiler from
generating a default implementation of a special member function such as a constructor
or destructor, and can affect overload resolution when used on other member functions.
</non-normative>

If the member function entry has been declared as deleted, then that entry has a
DW_AT_deleted attribute.
```

Thus this change is conforming.

Differential Revision: https://reviews.llvm.org/D153282