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merge asm fragments in H264_CHROMA_MC2_TMPL()
10% faster avg_h264_chroma_mc2_mmx2() 5% faster put_h264_chroma_mc2_mmx2() Originally committed as revision 7897 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -267,8 +267,6 @@ static void H264_CHROMA_MC2_TMPL(uint8_t *dst/*align 2*/, uint8_t *src/*align 1*
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{
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int CD=((1<<16)-1)*x*y + 8*y;
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int AB=((8<<16)-8)*x + 64 - CD;
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int i;
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asm volatile(
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/* mm5 = {A,B,A,B} */
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/* mm6 = {C,D,C,D} */
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@ -277,50 +275,41 @@ static void H264_CHROMA_MC2_TMPL(uint8_t *dst/*align 2*/, uint8_t *src/*align 1*
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"punpckldq %%mm5, %%mm5\n\t"
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"punpckldq %%mm6, %%mm6\n\t"
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"pxor %%mm7, %%mm7\n\t"
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:: "r"(AB), "r"(CD));
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asm volatile(
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/* mm0 = src[0,1,1,2] */
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"movd %0, %%mm0\n\t"
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"movd %2, %%mm0\n\t"
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"punpcklbw %%mm7, %%mm0\n\t"
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"pshufw $0x94, %%mm0, %%mm0\n\t"
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:: "m"(src[0]));
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:: "r"(AB), "r"(CD), "m"(src[0]));
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for(i=0; i<h; i++) {
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asm volatile(
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"1:\n\t"
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"addl %4, %1\n\t"
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/* mm1 = A * src[0,1] + B * src[1,2] */
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"movq %%mm0, %%mm1\n\t"
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"pmaddwd %%mm5, %%mm1\n\t"
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::);
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src += stride;
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asm volatile(
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/* mm0 = src[0,1,1,2] */
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"movd %0, %%mm0\n\t"
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"movd (%1), %%mm0\n\t"
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"punpcklbw %%mm7, %%mm0\n\t"
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"pshufw $0x94, %%mm0, %%mm0\n\t"
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:: "m"(src[0]));
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asm volatile(
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/* mm1 += C * src[0,1] + D * src[1,2] */
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"movq %%mm0, %%mm2\n\t"
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"pmaddwd %%mm6, %%mm2\n\t"
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"paddw %%mm2, %%mm1\n\t"
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::);
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asm volatile(
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/* dst[0,1] = pack((mm1 + 32) >> 6) */
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"paddw %1, %%mm1\n\t"
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"paddw %3, %%mm1\n\t"
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"psrlw $6, %%mm1\n\t"
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"packssdw %%mm7, %%mm1\n\t"
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"packuswb %%mm7, %%mm1\n\t"
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/* writes garbage to the right of dst.
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* ok because partitions are processed from left to right. */
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H264_CHROMA_OP4(%0, %%mm1, %%mm3)
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"movd %%mm1, %0\n\t"
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: "=m" (dst[0]) : "m" (ff_pw_32));
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dst += stride;
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}
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H264_CHROMA_OP4((%0), %%mm1, %%mm3)
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"movd %%mm1, (%0)\n\t"
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"addl %4, %0\n\t"
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"subl $1, %2\n\t"
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"jnz 1b\n\t"
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: "+r" (dst), "+r"(src), "+r"(h) : "m" (ff_pw_32), "r"(stride));
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}
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#endif
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