1  /* PR tree-optimization/59643 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O3 -fdump-tree-pcom-details" } */
       4  
       5  void
       6  foo (double *a, double *b, double *c, double d, double e, int n)
       7  {
       8    int i;
       9    for (i = 1; i < n - 1; i++)
      10      a[i] = d * (b[i] + c[i] + a[i - 1] + a[i + 1]) + e * a[i];
      11  }
      12  
      13  /* { dg-final { scan-tree-dump-times "Before commoning:" 1 "pcom" } } */
      14  /* { dg-final { scan-tree-dump-times "Unrolling 2 times" 1 "pcom" } } */