Ah, I see what you mean.

GCC can now emit information that can be used to reconstruct the frame pointers for inlined functions: https://lwn.net/Articles/940686/ It's now filtering through various projects: https://sourceware.org/binutils/wiki/sframe

It will not undo _all_ the transformations, but it will help a lot. I used it for backtraces, and it fixed the missing frame issues for me.

This was possible with the earlier DWARF format (it's Turing-complete), and I think this is how VCC does it. Although I have not checked it.