qemu/tests/cris/check_gcctorture_pr28634.c

   1 /* PR rtl-optimization/28634.  On targets with delayed branches,
   2    dbr_schedule could do the next iteration's addition in the
   3    branch delay slot, then subtract the value again if the branch
   4    wasn't taken.  This can lead to rounding errors.  */
   5 double x = -0x1.0p53;
   6 double y = 1;
   7 int
   8 main (void)
   9 {
  10   while (y > 0)
  11     y += x;
  12   if (y != x + 1)
  13     abort ();
  14   exit (0);
  15 }