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/* { dg-do compile } */

#define N 512

#define M 1024

signed short in[N+M];

signed short coeff[M];

signed short out[N];

/* Outer-loop vectorization.  */

void

foo (){

  int i,j;

  int diff;

  for (i = 0; i < N; i++) {

    diff = 0;

    for (j = 0; j < M; j+=8) {

      diff += in[j+i]*coeff[j];

    }

    out[i]=diff;

  }

}

/* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 1 "vect" { target { vect_widen_mult_hi_to_si && vect_pack_trunc } } } } */

/* { dg-final { cleanup-tree-dump "vect" } } */