[Bug tree-optimization/121828] during GIMPLE pass: bitintlower ICE: definition in block 2 follows the use with __builtin_sub_overflow() and other function that does not write to used memory

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121828

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2025-09-06

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
There was a CSEing of the SUB_OVERFLOW and using REAL/IMAG across the call.