1  /* { dg-do compile } */
       2  /* { dg-additional-options "-mssse3" { target { i?86-*-* x86_64-*-* } } } */
       3  #define byte unsigned char
       4  
       5  void
       6  matrix_mul (byte *in, byte *out, int size)
       7  {
       8    int i;
       9    for (i = 0; i < size; i++)
      10      {
      11        byte in0 = in[0];
      12        byte in1 = in[1];
      13        byte in2 = in[2];
      14        byte out0, out1, out2, out3;
      15        out0 = in0 + in1;
      16        out1 = in0 + in2;
      17        out2 = in1 + in2;
      18        out3 = in0 + in1 + in2;
      19        out[0] = out0;
      20        out[1] = out1;
      21        out[2] = out2;
      22        out[3] = out3;
      23        in += 3;
      24        out += 4;
      25      }
      26  }
      27  
      28  /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { i?86-*-* x86_64-*-* } } } } */