[Bug tree-optimization/103181] [9/10/11/12 Regression] wrong code at -O1 due to conditional division by 0 being executed

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103181

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is rather

      if (!TREE_CONSTANT (divisor) || integer_zerop (divisor))
        return true;
      return false;

for division handling where here we have { 3, 0 } for the divisor.