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| author | Michael Niedermayer <michaelni@gmx.at> | 2005-06-01 08:43:40 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2005-06-01 08:43:40 +0000 |
| commit | e4b36d443428f86d6f9db8af1897553818e76fa0 (patch) | |
| tree | c3376e868077580614ed6ecc328b3a84182ef956 /libavcodec/i386/idct_mmx.c | |
| parent | 85bbfcd4eead2d26df88de890962cbda97fac88b (diff) | |
avoid one transpose (730->680 dezicycles on duron)
Originally committed as revision 4332 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/i386/idct_mmx.c')
| -rw-r--r-- | libavcodec/i386/idct_mmx.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/libavcodec/i386/idct_mmx.c b/libavcodec/i386/idct_mmx.c index 6ce73ae2c3..7e50f4c86b 100644 --- a/libavcodec/i386/idct_mmx.c +++ b/libavcodec/i386/idct_mmx.c @@ -673,14 +673,11 @@ void ff_h264_idct_add_mmx2(uint8_t *dst, int16_t *block, int stride) /* mm2=s02+s13 mm3=s02-s13 mm4=d02+d13 mm1=d02-d13 */ IDCT4_1D( %%mm3, %%mm2, %%mm1, %%mm0, %%mm4, %%mm5 ) - /* in: 2,4,1,3 out: 2,3,0,1 */ - TRANSPOSE4( %%mm2, %%mm4, %%mm1, %%mm3, %%mm0 ) - "pxor %%mm7, %%mm7 \n\t" :: "m"(ff_pw_32)); - STORE_DIFF_4P( %%mm2, %%mm4, %%mm7, &dst[0*stride] ); - STORE_DIFF_4P( %%mm3, %%mm4, %%mm7, &dst[1*stride] ); - STORE_DIFF_4P( %%mm0, %%mm4, %%mm7, &dst[2*stride] ); - STORE_DIFF_4P( %%mm1, %%mm4, %%mm7, &dst[3*stride] ); + STORE_DIFF_4P( %%mm2, %%mm0, %%mm7, &dst[0*stride] ); + STORE_DIFF_4P( %%mm4, %%mm0, %%mm7, &dst[1*stride] ); + STORE_DIFF_4P( %%mm1, %%mm0, %%mm7, &dst[2*stride] ); + STORE_DIFF_4P( %%mm3, %%mm0, %%mm7, &dst[3*stride] ); } |