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

[via llvm-commits]

yonghong-song wrote:

@dzhidzhoev There are some discussions in the past. See https://discourse.llvm.org/t/rfc-identify-func-signature-change-in-llvm-compiled-kernel-image/82609/4. The consensus is to avoid adding suffix for transformation like dead argument elimination or argument promotion.

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