[Bug middle-end/122323] [14/15/16 Regression] Failed to optimize copysign

[hjl.tools at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122323

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2025-10-18

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Use __builtin_fabsf:

float t(float x)
{
  return -__builtin_fabsf (x);
}