:"=m"(*pix), "=m"(*(pix+line_size))
:"+m"(*pix), "+m"(*(pix+line_size))
static void add_pixels_clamped_mmx(const DCTELEM *block, UINT8 *pixels, int line_size){    const DCTELEM *p;    UINT8 *pix;    int i;    /* read the pixels */    p = block;    pix = pixels;	__asm __volatile("pxor	%%mm7, %%mm7":::"memory");    for(i=0;i<4;i++) {	__asm __volatile(		"movq	%2, %%mm0\n\t"		"movq	8%2, %%mm1\n\t"		"movq	16%2, %%mm2\n\t"		"movq	24%2, %%mm3\n\t"		"movq	%0, %%mm4\n\t"		"movq	%1, %%mm6\n\t"		"movq	%%mm4, %%mm5\n\t"		"punpcklbw %%mm7, %%mm4\n\t"		"punpckhbw %%mm7, %%mm5\n\t"		"paddsw	%%mm4, %%mm0\n\t"		"paddsw	%%mm5, %%mm1\n\t"		"movq	%%mm6, %%mm5\n\t"		"punpcklbw %%mm7, %%mm6\n\t"		"punpckhbw %%mm7, %%mm5\n\t"		"paddsw	%%mm6, %%mm2\n\t"		"paddsw	%%mm5, %%mm3\n\t"		"packuswb %%mm1, %%mm0\n\t"		"packuswb %%mm3, %%mm2\n\t"		"movq	%%mm0, %0\n\t"		"movq	%%mm2, %1\n\t"		:"=m"(*pix), "=m"(*(pix+line_size))		:"m"(*p)		:"memory");        pix += line_size*2;        p += 16;    }}