1  /* { dg-do run } */
       2  /* { dg-options "-O3 -fno-tree-loop-vectorize -fdump-tree-pcom-details" } */
       3  
       4  int a[200];
       5  char b;
       6  void abort (void);
       7  
       8  int main() {
       9    int i;
      10    b = 100;
      11    for (; b; b--) {
      12      a[b] = 2;
      13      a[b + 2] = 1;
      14    }
      15  
      16    if (a[0] != 0 || a[1] != 2 || a[2] != 2)
      17      abort ();
      18    for (i = 3; i < 103; i++)
      19      if (a[i] != 1)
      20      abort ();
      21  
      22    return 0;
      23  }
      24  
      25  /* { dg-final { scan-tree-dump-times "Store-stores chain" 1 "pcom" } } */