[Bug bootstrap/102681] [12 Regression] AArch64 bootstrap failure

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102681

--- Comment #12 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So this is definitely a bad interaction between complete unrolling where we
had:
    for (unsigned int i = 1; i < 2; i++)
      if (this->coeffs[1] != 0)
 return false;

And jump threading.

I am still reducing the testcase but at least I figured out this part of it.