1  /* { dg-options "-O2 -ftracer -fdump-tree-tracer" } */
       2  volatile int a, b, c;
       3  int main ()
       4  {
       5    int i;
       6    for (i = 0; i < 1000; i++)
       7      {
       8        if (i % 17)
       9  	a++;
      10        else
      11  	b++;
      12        c++;
      13      }
      14    return 0;
      15  }
      16  /* Superblock formation should produce two copies of the increment of c */
      17  /* { dg-final-generate { scan-tree-dump-times "c =" 2 "tracer" } } */