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Code Issues Releases Activity

remove some movq in ff_h264_idct8_add_mmx. 225->217 cycles on core2.

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Originally committed as revision 11825 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Loren Merritt 2008-02-03 03:21:47 +00:00
parent dc29622385
commit 51f0ac65df
1 changed files with 23 additions and 29 deletions
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52
libavcodec/i386/h264dsp_mmx.c
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@ -94,44 +94,38 @@ static inline void h264_idct8_1d(int16_t *block)
{
asm volatile(
"movq 112(%0), %%mm7 \n\t"
"movq 80(%0), %%mm5 \n\t"
"movq 80(%0), %%mm0 \n\t"
"movq 48(%0), %%mm3 \n\t"
"movq 16(%0), %%mm1 \n\t"
"movq 16(%0), %%mm5 \n\t"
"movq %%mm7, %%mm4 \n\t"
"movq %%mm3, %%mm6 \n\t"
"movq %%mm5, %%mm0 \n\t"
"movq %%mm7, %%mm2 \n\t"
"movq %%mm0, %%mm4 \n\t"
"movq %%mm5, %%mm1 \n\t"
"psraw $1, %%mm4 \n\t"
"psraw $1, %%mm6 \n\t"
"psubw %%mm7, %%mm0 \n\t"
"psubw %%mm6, %%mm2 \n\t"
"psubw %%mm4, %%mm0 \n\t"
"psubw %%mm3, %%mm2 \n\t"
"psubw %%mm3, %%mm0 \n\t"
"paddw %%mm1, %%mm2 \n\t"
"movq %%mm5, %%mm4 \n\t"
"movq %%mm1, %%mm6 \n\t"
"psraw $1, %%mm4 \n\t"
"psraw $1, %%mm6 \n\t"
"paddw %%mm5, %%mm4 \n\t"
"paddw %%mm1, %%mm6 \n\t"
"psraw $1, %%mm1 \n\t"
"paddw %%mm0, %%mm4 \n\t"
"paddw %%mm5, %%mm1 \n\t"
"paddw %%mm7, %%mm4 \n\t"
"paddw %%mm5, %%mm6 \n\t"
"psubw %%mm1, %%mm4 \n\t"
"paddw %%mm3, %%mm6 \n\t"
"paddw %%mm0, %%mm1 \n\t"
"psubw %%mm5, %%mm4 \n\t"
"paddw %%mm3, %%mm1 \n\t"
"psubw %%mm3, %%mm5 \n\t"
"psubw %%mm3, %%mm0 \n\t"
"paddw %%mm7, %%mm5 \n\t"
"psubw %%mm7, %%mm0 \n\t"
"psraw $1, %%mm3 \n\t"
"psraw $1, %%mm7 \n\t"
"psubw %%mm3, %%mm5 \n\t"
"psubw %%mm7, %%mm0 \n\t"
"movq %%mm0, %%mm1 \n\t"
"movq %%mm4, %%mm3 \n\t"
"movq %%mm2, %%mm5 \n\t"
"movq %%mm6, %%mm7 \n\t"
"psraw $2, %%mm6 \n\t"
"movq %%mm1, %%mm7 \n\t"
"psraw $2, %%mm1 \n\t"
"psraw $2, %%mm3 \n\t"
"paddw %%mm5, %%mm3 \n\t"
"psraw $2, %%mm5 \n\t"
"paddw %%mm0, %%mm1 \n\t"
"psraw $2, %%mm0 \n\t"
"paddw %%mm6, %%mm1 \n\t"
"paddw %%mm2, %%mm3 \n\t"
"psubw %%mm4, %%mm5 \n\t"
"psubw %%mm0, %%mm7 \n\t"