[Bug target/115734] Missed optimization: carry chains with __builtin_addc missed except on x86

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115734

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |arm aarch64

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
It would probably be good to split this bug for the missed optimization when
using __builtin_addc (on arm and aarch64 at least) and the missed optimization
to detect addc with the open-coded variant.

I've classified the bug as for the first issue.