gcc/testsuite/gcc.dg/pr56035.c

   1 /* PR tree-optimization/56035 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O1 -ftree-vectorize -fcse-follow-jumps -fstrict-overflow" } */
   4
   5 short a, c, *p;
   6
   7 void
   8 f (void)
   9 {
  10   int b;
  11
  12   if (c)
  13   lbl1:
  14     for (a = 0; a < 1; a++)
  15       {
  16         for (c = 0; c < 1; c++)
  17           {
  18             goto lbl1;
  19             while (*p++)
  20             lbl2:
  21               ;
  22           }
  23       }
  24
  25   for (;; b++)
  26     {
  27       if (c)
  28         goto lbl2;
  29     lbl3:
  30       for (c = 0; c < 9; c++)
  31         for (c = -17; c < 2; c++)
  32           if (*p)
  33             goto lbl3;
  34     }
  35 }