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

[Alexander Kornienko via llvm-commits]

alexfh wrote:

Is it expected that `-gno-structor-decl-linkage-names` enables debug information (i.e. it has an effect of `-g -gno-structor-decl-linkage-names`)? I was quite surprised by this, but maybe it's a common behavior of clang options controlling debug information? 

https://gcc.godbolt.org/z/bhbKq5W8W

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