1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -ftree-vectorize" } */
       3  
       4  #define N 1024
       5  unsigned char a[N], b[N], c[N];
       6  
       7  void f1(void)
       8  {
       9    int i;
      10    for (i = 0; i < N; ++i)
      11      a[i] = b[i] * c[i];
      12  }
      13  
      14  void f2(void)
      15  {
      16    int i;
      17    for (i = 0; i < N; ++i)
      18      a[i] = b[i] * 2;
      19  }
      20  
      21  void f3(void)
      22  {
      23    int i;
      24    for (i = 0; i < N; ++i)
      25      a[i] = b[i] * 20;
      26  }