[clang] [llvm] [clang][DebugInfo] Emit unified (Itanium) mangled name to structor declarations (PR #154142)

[Jeremy Morse via cfe-commits]

jmorse wrote:

Similar thanks for the heads up,

The change broadly LGTMs, although this isn't a zone of debug-info that I'm really familiar with.

https://github.com/llvm/llvm-project/pull/154142