[llvm] [RFC] Emit dwarf data for signature-changed or new functions (PR #157349)

[via llvm-commits]

yonghong-song wrote:

@OCHyams Since you are worried about debugger with this pull request, could you show me some examples how the change could affect debugger? If the debugger is not happy, we either need to tweak the current implementation or we might need to choose other alternative solution (e.g., https://github.com/yonghong-song/llvm-project/commit/be0cdea2369dcd6e9050b1d9de49559c19768491). Thanks!

https://github.com/llvm/llvm-project/pull/157349