/* { dg-do compile } */
/* { dg-additional-options "-Ofast -funroll-loops" } */

typedef unsigned char uchar;
typedef struct rgb_ {uchar r; uchar g; uchar b;} rgb;
#define N 512
rgb in[N], out[N];
float c[N];
void foo(int n)
{
  int i, j;
  for (i = 0; i < n; i++) //in and out are RGB byte arrays
    {
      float r = 0, g = 0, b = 0;
      for (j = 0; j < 5; j++)
	{
	  r += (float)in[i + j].r * c[j];
	  g += (float)in[i + j].g * c[j];
	  b += (float)in[i + j].b * c[j];
	}
      out[i].r = (uchar)r;
      out[i].g = (uchar)g;
      out[i].b = (uchar)b;
    }
}

/* { dg-final { scan-tree-dump "vectorized 1 loops in function" "vect" { target { vect_float && vect_intfloat_cvt } } } } */