[clang] [llvm] [WIP][clang][DebugInfo] Add new DW_AT_APPLE_enum_kind to encode enum_extensibility (PR #124752)

[David Blaikie via cfe-commits]

dwblaikie wrote:

Is my thing about the ctor understanding correct, and it's that the ctor exists theoretically/abstractly, but not in the AST or in the generated IR/DWARF? Could it be added/would that be sufficient?

But, yeah, probably fine to just add the attribute, since that's the real feature you want to know about.

https://github.com/llvm/llvm-project/pull/124752