[llvm] [Dwarf][Transforms] Add dwarf support when func signature changed (PR #127855)

[Paul T Robinson via llvm-commits]

pogo59 wrote:

@yonghong-song yes that is what I suggested.

As @dwblaikie said a while back, we should try to solve the general problem of modified ABI but the function name is the same. We should not be limited to describing what LLVM happens to do today. 

https://github.com/llvm/llvm-project/pull/127855