[Bug middle-end/112750] wrong code with _BitInt(256) and above with __builtin_sub_overflow_p() at -O0

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112750

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
     Ever confirmed|0                           |1
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org
   Last reconfirmed|                            |2023-11-30

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 56725
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56725&action=edit
gcc14-pr112750.patch

Untested fix.