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using 1 operand less and slightly faster put_pixels_y2 

Originally committed as revision 564 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2002-05-22 23:18:59 +00:00
parent a213d66486
commit ba0420d83e
1 changed files with 19 additions and 15 deletions
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34
libavcodec/i386/dsputil_mmx_avg.h
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@ -126,31 +126,35 @@ static void DEF(put_pixels_y2)(UINT8 *block, const UINT8 *pixels, int line_size,
:"D"(pixels), "S" (block), "c"(line_size)
:"%eax", "memory");
#else
// kabi measure me
__asm __volatile(
"movq (%2), %%mm0 \n\t"
"addl %1, %2 \n\t"
"xorl %%eax, %%eax \n\t"
"movq (%1), %%mm0 \n\t"
"leal (%1, %2), %%edi \n\t"
"leal (%1, %3), %%esi \n\t"
"addl %1, %1 \n\t"
".balign 16 \n\t"
"1: \n\t"
"movq (%2, %%eax), %%mm1 \n\t"
"movq (%3, %%eax), %%mm2 \n\t"
"movq (%2 , %%eax), %%mm1 \n\t"
"movq (%%edi, %%eax), %%mm2 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm2, %%mm1 \n\t"
"movq %%mm0, (%4, %%eax) \n\t"
"movq %%mm1, (%5, %%eax) \n\t"
"addl %6, %%eax \n\t"
"movq (%2, %%eax), %%mm1 \n\t"
"movq (%3, %%eax), %%mm0 \n\t"
"movq %%mm0, (%3 , %%eax) \n\t"
"movq %%mm1, (%%esi, %%eax) \n\t"
"addl %1, %%eax \n\t"
"movq (%2 , %%eax), %%mm1 \n\t"
"movq (%%edi, %%eax), %%mm0 \n\t"
PAVGB" %%mm1, %%mm2 \n\t"
PAVGB" %%mm0, %%mm1 \n\t"
"movq %%mm2, (%4, %%eax) \n\t"
"movq %%mm1, (%5, %%eax) \n\t"
"addl %6, %%eax \n\t"
"movq %%mm2, (%3 , %%eax) \n\t"
"movq %%mm1, (%%esi, %%eax) \n\t"
"addl %1, %%eax \n\t"
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"D"(pixels), "S"(pixels+line_size), "r"(pixels+line_size*2), "r" (block),
"r" (block+line_size), "g"(line_size<<1)
:"%eax", "memory");
:"+g"(h), "+r"(line_size), "+r"(pixels)
: "r" (block)
: "%eax", "%esi", "%edi", "memory");
#endif
}