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

[David Blaikie via llvm-commits]

dwblaikie wrote:

How about an extension to the standard attribute? It's a pity the DW_CC_* doesn't have a user defined extension space, but could get a bit weird and use some high-ish value to avoid colliding with likely standard features added to the enum.

Perhaps you could file a DWARF issue to discuss the long-term/standardized solution to this?

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