[Bug tree-optimization/117529] Missed optimization: (y != 0 && x > (unsigned)(-1) / y) (multiplication overflow check)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117529

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2024-11-11

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
  <bb 2> [local count: 1073741824]:
  if (y_4(D) != 0)
    goto <bb 3>; [50.00%]
  else
    goto <bb 4>; [50.00%]

  <bb 3> [local count: 536870912]:
  _1 = .MUL_OVERFLOW (y_4(D), x_5(D));
  _2 = IMAGPART_EXPR <_1>;
  _8 = (bool) _2;

  <bb 4> [local count: 1073741824]:
  # iftmp.0_3 = PHI <_8(3), 0(2)>
  return iftmp.0_3;