1  /* { dg-do compile } */
       2  /* { dg-require-effective-target vect_int } */
       3  
       4  int
       5  f (int *x, int b1, int b2, int b3)
       6  {
       7    int foo = 0;
       8    for (int i1 = 0; i1 < b1; ++i1)
       9      for (int i2 = 0; i2 < b2; ++i2)
      10        for (int i3 = 0; i3 < b3; ++i3)
      11  	foo += x[i1 * b2 * b3 + i2 * b3 + (i3 - 1)];
      12    return foo;
      13  }
      14  
      15  /* { dg-final { scan-tree-dump "vectorized 1 loops in function" "vect" } } */