[llvm] [DwarfDebug] Associate subprogram DIEs with their Functions (PR #162852)

[Vladislav Dzhidzhoev via llvm-commits]

dzhidzhoev wrote:

I'm moving this to draft for now, as it's probably an overly complex comlication for the goal of landing https://reviews.llvm.org/D144006.

https://github.com/llvm/llvm-project/pull/162852