At 2014-02-15 13:23:56,"Satoshi Nakagawa" <[email protected]> wrote: ># HG changeset patch ># User Satoshi Nakagawa <[email protected]> ># Date 1392440540 -32400 ># Sat Feb 15 14:02:20 2014 +0900 ># Node ID dcdb5c276c7827fa540348018ddd72618b558feb ># Parent d77a549b8061f038b2d263c4508e256b4a335208 >primitives: add count_nonzero > >+;----------------------------------------------------------------------------- >+; int count_nonzero(const int32_t *quantCoeff, int numCoeff); >+;----------------------------------------------------------------------------- >+INIT_XMM sse2 >+cglobal count_nonzero, 2,3,4 >+ pxor m0, m0 >+ pxor m1, m1 >+ mov r2d, r1d >+ shr r1d, 3 >+ >+.loop >+ movdqu m2, [r0] ; TODO: movdqa >+ movdqu m3, [r0 + 16] ; TODO: movdqa for x264 code style, we need write as movu here >+ add r0, 32 >+ packssdw m2, m3 >+ pcmpeqw m2, m0 >+ psrlw m2, 15 >+ packsswb m2, m2 >+ psadbw m2, m0 >+ paddd m1, m2 >+ dec r1d >+ jnz .loop >+ >+ movd r1d, m1 >+ sub r2d, r1d >+ mov eax, r2d >+ >+ RET
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