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

[via llvm-commits]

yonghong-song wrote:

A new version update:
   - Handle more cases (w.r.t. changed signatures)
   - Added functions where struct arguments becomes two actual arguments or becomes a pointer to struct
   - Avoid external functions and intrinsic functions and functions having struct/union return values.



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