1  /* { dg-do compile } */
       2  
       3  #define N 40
       4  #define M 128
       5  signed short in[N+M];
       6  signed short coeff[M];
       7  signed short out[N];
       8  
       9  /* Outer-loop vectorization. */
      10  
      11  void
      12  foo (){
      13    int i,j;
      14    int diff;
      15  
      16    for (i = 0; i < N; i++) {
      17      diff = 0;
      18      for (j = 0; j < M; j+=8) {
      19        diff += in[j+i]*coeff[j]; 
      20      }
      21      out[i]=diff;
      22    }
      23  }
      24  
      25  /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 1 "vect" { target { vect_widen_mult_hi_to_si && vect_pack_trunc } } } } */