[llvm] [LLVM][DWARF] Add support for monolithic types in .debug_names (PR #68131)

[Alexander Yermolovich via llvm-commits]

ayermolo wrote:

> (not sure where it was recorded - maybe just in-person at LLVM dev)
> 
> @ayermolo did manage to find some data showing maybe a 10% memory regression for an IR->object compilation (where the backend memory usage isn't overshadowed by the frontend's peak) & I think is looking into it.

Yep. It's in the one of the threads in this PR. github is just hiding it under "load more".
Plan is to re-factor not to rely on DIE post PR, pot that, and then update this code.

https://github.com/llvm/llvm-project/pull/68131