1  /* { dg-do compile } */
       2  /* { dg-options "-ftree-vectorize" } */
       3  
       4  struct Pixel {
       5      unsigned short r;
       6      unsigned short g;
       7      unsigned short b;
       8      unsigned short a;
       9  };
      10  
      11  void fn(unsigned char * __restrict dst, const unsigned char * __restrict src)
      12  {
      13    unsigned x;
      14    for(x = 0; x < 1024; x += 1)
      15      {
      16        struct Pixel pixel;
      17        pixel.r = (unsigned short)(((unsigned)src[0]) * 0xffff / 0xff);
      18        pixel.g = (unsigned short)(((unsigned)src[1]) * 0xffff / 0xff);
      19        pixel.b = (unsigned short)(((unsigned)src[2]) * 0xffff / 0xff);
      20        pixel.a = (unsigned short)(((unsigned)src[3]) * 0xffff / 0xff);
      21        __builtin_memcpy(dst, &pixel, sizeof pixel);
      22        src += 4;
      23        dst += 8;
      24      }
      25  }