[llvm] [DebugInfo] Add clang flag to enable function-level debug line attribution (PR #93985)

[via llvm-commits]

alx32 wrote:

Here is the RFC with more information: https://discourse.llvm.org/t/rfc-new-dwarf-attribute-for-symbolication-of-merged-functions/79434

I will look into the the assembly attribute generation support.

https://github.com/llvm/llvm-project/pull/93985