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

[Paul T Robinson via llvm-commits]

pogo59 wrote:

> For debug_info section, without this patch the size is 0xb61ff8d and with this patch the size is 0xb6207e5. So the increase is 0x858 which is tiny.

.debug_abbrev also increases, by 0x1288, for a total increase of 0x1ae0. Still tiny. So, not a problem to emit this info as currently implemented.

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