1  /* { dg-do compile } */
       2  /* { dg-require-effective-target vect_long_long } */
       3  
       4  int N;
       5  long long fn1(void) {
       6    short i;
       7    long long a;
       8    i = a = 0;
       9    while (i < N)
      10      a -= i++;
      11    return a;
      12  }
      13  
      14  /* { dg-final { scan-tree-dump "vectorized 1 loops" "vect" } } */