mirror of https://git.ffmpeg.org/ffmpeg.git
get rid of 2 movq (680 -> 658 dezicycles on duron)
Originally committed as revision 4333 to svn://svn.ffmpeg.org/ffmpeg/trunk
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e4b36d4434
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987ae784e6
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@ -614,19 +614,17 @@ declare_idct (ff_mmx_idct, mmx_table,
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"psubw "#a", "#b" \n\t"\
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"psubw "#a", "#b" \n\t"\
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"psubw "#c", "#d" \n\t"
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"psubw "#c", "#d" \n\t"
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/* in: a,b out: a,s */
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#define SUMSUBD2_AB( a, b, t ) \
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#define SUMSUBD2_AB( a, b, t, s ) \
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"movq "#a", "#s" \n\t"\
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"movq "#b", "#t" \n\t"\
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"movq "#b", "#t" \n\t"\
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"psraw $1 , "#b" \n\t"\
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"psraw $1 , "#b" \n\t"\
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"psraw $1 , "#s" \n\t"\
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"paddw "#a", "#b" \n\t"\
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"paddw "#b", "#a" \n\t"\
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"psraw $1 , "#a" \n\t"\
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"psubw "#t", "#s" \n\t"
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"psubw "#t", "#a" \n\t"
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#define IDCT4_1D( s02, s13, d02, d13, t, u ) \
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#define IDCT4_1D( s02, s13, d02, d13, t ) \
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SUMSUB_BA ( s02, d02 )\
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SUMSUB_BA ( s02, d02 )\
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SUMSUBD2_AB( s13, d13, u, t )\
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SUMSUBD2_AB( s13, d13, t )\
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SUMSUB_BADC( s13, s02, t, d02 )
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SUMSUB_BADC( d13, s02, s13, d02 )
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#define SBUTTERFLY( a, b, t, n ) \
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#define SBUTTERFLY( a, b, t, n ) \
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"movq "#a", "#t" \n\t" /* abcd */\
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"movq "#a", "#t" \n\t" /* abcd */\
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@ -662,22 +660,22 @@ void ff_h264_idct_add_mmx2(uint8_t *dst, int16_t *block, int stride)
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asm volatile(
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asm volatile(
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/* mm1=s02+s13 mm2=s02-s13 mm4=d02+d13 mm0=d02-d13 */
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/* mm1=s02+s13 mm2=s02-s13 mm4=d02+d13 mm0=d02-d13 */
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IDCT4_1D( %%mm2, %%mm1, %%mm0, %%mm3, %%mm4, %%mm5 )
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IDCT4_1D( %%mm2, %%mm1, %%mm0, %%mm3, %%mm4 )
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"movq %0, %%mm6 \n\t"
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"movq %0, %%mm6 \n\t"
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/* in: 1,4,0,2 out: 1,2,3,0 */
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/* in: 1,4,0,2 out: 1,2,3,0 */
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TRANSPOSE4( %%mm1, %%mm4, %%mm0, %%mm2, %%mm3 )
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TRANSPOSE4( %%mm3, %%mm1, %%mm0, %%mm2, %%mm4 )
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"paddw %%mm6, %%mm1 \n\t"
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"paddw %%mm6, %%mm3 \n\t"
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/* mm2=s02+s13 mm3=s02-s13 mm4=d02+d13 mm1=d02-d13 */
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/* mm2=s02+s13 mm3=s02-s13 mm4=d02+d13 mm1=d02-d13 */
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IDCT4_1D( %%mm3, %%mm2, %%mm1, %%mm0, %%mm4, %%mm5 )
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IDCT4_1D( %%mm4, %%mm2, %%mm3, %%mm0, %%mm1 )
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"pxor %%mm7, %%mm7 \n\t"
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"pxor %%mm7, %%mm7 \n\t"
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:: "m"(ff_pw_32));
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:: "m"(ff_pw_32));
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STORE_DIFF_4P( %%mm2, %%mm0, %%mm7, &dst[0*stride] );
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STORE_DIFF_4P( %%mm0, %%mm1, %%mm7, &dst[0*stride] );
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STORE_DIFF_4P( %%mm4, %%mm0, %%mm7, &dst[1*stride] );
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STORE_DIFF_4P( %%mm2, %%mm1, %%mm7, &dst[1*stride] );
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STORE_DIFF_4P( %%mm1, %%mm0, %%mm7, &dst[2*stride] );
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STORE_DIFF_4P( %%mm3, %%mm1, %%mm7, &dst[2*stride] );
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STORE_DIFF_4P( %%mm3, %%mm0, %%mm7, &dst[3*stride] );
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STORE_DIFF_4P( %%mm4, %%mm1, %%mm7, &dst[3*stride] );
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}
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}
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