[llvm] [llvm][DebugInfo] Attach object-pointer to DISubprogram declarations (PR #122742)

[David Blaikie via llvm-commits]

dwblaikie wrote:

We're seeing a 5-10% growth in .debug_info size (well, zstd compressed .debug_info.dwo size, to be more specific) that seems worrying.

Might be worth reverting this and doing some size analysis to understand the cost involved? Would you like more data before that?

https://github.com/llvm/llvm-project/pull/122742