1  /* { dg-do compile } */
       2  /* Diagnose vector ops that are later decomposed.  */
       3  /* { dg-additional-options "-Wvector-operation-performance" } */
       4  
       5  unsigned short foo (unsigned short *a, int n)
       6  {
       7    unsigned short sum = 0;
       8    for (int i = 0; i < n; ++i)
       9      sum += a[i];
      10    return sum;
      11  }