__asm __volatile(PREFETCH" %0\n\t"::"m"(*s):"memory");
__asm __volatile(PREFETCH"	%0"::"m"(*s):"memory");
void rgb24to32(uint8_t *src,uint8_t *dst,uint32_t src_size){  uint8_t *dest = dst;  uint8_t *s = src;  uint8_t *end;#ifdef HAVE_MMX  const uint64_t mask32 = 0x00FFFFFF00FFFFFFULL;  uint8_t *mm_end;#endif  end = s + src_size;#ifdef HAVE_MMX  __asm __volatile(PREFETCH" %0\n\t"::"m"(*s):"memory");  mm_end = (uint8_t*)((((unsigned long)end)/(MMREG_SIZE*2))*(MMREG_SIZE*2));  __asm __volatile("movq %0, %%mm7"::"m"(mask32):"memory");  if(mm_end == end) mm_end -= MMREG_SIZE*2;  while(s < mm_end)  {    __asm __volatile(	PREFETCH" 32%1\n\t"	"movd	%1, %%mm0\n\t"	"movd	3%1, %%mm1\n\t"	"movd	6%1, %%mm2\n\t"	"movd	9%1, %%mm3\n\t"	"punpckldq %%mm1, %%mm0\n\t"	"punpckldq %%mm3, %%mm2\n\t"	"pand	%%mm7, %%mm0\n\t"	"pand	%%mm7, %%mm2\n\t"	MOVNTQ"	%%mm0, %0\n\t"	MOVNTQ"	%%mm2, 8%0"	:"=m"(*dest)	:"m"(*s)	:"memory");    dest += 16;    s += 12;  }  __asm __volatile(SFENCE:::"memory");  __asm __volatile(EMMS:::"memory");#endif  while(s < end)  {    *dest++ = *s++;    *dest++ = *s++;    *dest++ = *s++;    *dest++ = 0;  }}