Commit 7c4fd7eb authored by Michael Niedermayer's avatar Michael Niedermayer
Browse files

factor out common subexprssion (gcc of course is too stupid to do this ...)

5% faster avg_h264_chroma_mc2_mmx2()
10% faster put_h264_chroma_mc2_mmx2()

Originally committed as revision 7898 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 9301a0b4
......@@ -265,8 +265,9 @@ static void H264_CHROMA_MC4_TMPL(uint8_t *dst/*align 4*/, uint8_t *src/*align 1*
#ifdef H264_CHROMA_MC2_TMPL
static void H264_CHROMA_MC2_TMPL(uint8_t *dst/*align 2*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)
{
int CD=((1<<16)-1)*x*y + 8*y;
int AB=((8<<16)-8)*x + 64 - CD;
int tmp = ((1<<16)-1)*x + 8;
int CD= tmp*y;
int AB= (tmp<<3) - CD;
asm volatile(
/* mm5 = {A,B,A,B} */
/* mm6 = {C,D,C,D} */
......
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