[Bug target/127952] _addcarry(x)_u64 and _subborrow_u64 not work direcly

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127952

Drea Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_addcarry_u64&ig_expand=175



So the intrinsics documentation uses __int64 here.  

Which GCC uses `unsigned long long` for it.

uint64_t is `unsigned long` for most x86_64 targets.

So you are just misusing the intrinsics.