2 instructions less in h264_loop_filter_luma_mmx2()

Originally committed as revision 6882 to svn://svn.ffmpeg.org/ffmpeg/trunk
19 years ago · 25225c3773
parent bda2203d56
commit 25225c3773
1 changed files with 3 additions and 5 deletions
--- a/libavcodec/i386/h264dsp_mmx.c
+++ b/libavcodec/i386/h264dsp_mmx.c
@ -399,10 +399,9 @@ static inline void h264_loop_filter_luma_mmx2(uint8_t *pix, int stride, int alph
        "pand     %%mm7,  %%mm6    \n\t" // mask & |p2-p0|<beta
        "pshufw  $80, %4, %%mm4    \n\t"
        "pand     %%mm7,  %%mm4    \n\t" // mask & tc0
-        "movq     %8,     %%mm7    \n\t"
-        "pand     %%mm6,  %%mm7    \n\t" // mask & |p2-p0|<beta & 1
+        "movq     %%mm4,  %%mm7    \n\t"
+        "psubb    %%mm6,  %%mm7    \n\t"
        "pand     %%mm4,  %%mm6    \n\t" // mask & |p2-p0|<beta & tc0
-        "paddb    %%mm4,  %%mm7    \n\t" // tc++
        H264_DEBLOCK_Q1(%%mm0, %%mm3, "(%1)", "(%1,%3)", %%mm6, %%mm4)

        /* filter q1 */
@ -413,8 +412,7 @@ static inline void h264_loop_filter_luma_mmx2(uint8_t *pix, int stride, int alph
        "pand     %0,     %%mm6    \n\t"
        "pshufw  $80, %4, %%mm5    \n\t"
        "pand     %%mm6,  %%mm5    \n\t"
-        "pand     %8,     %%mm6    \n\t"
-        "paddb    %%mm6,  %%mm7    \n\t"
+        "psubb    %%mm6,  %%mm7    \n\t"
        "movq    (%2,%3), %%mm3    \n\t"
        H264_DEBLOCK_Q1(%%mm3, %%mm4, "(%2,%3,2)", "(%2,%3)", %%mm5, %%mm6)