On Wed, Sep 4, 2019 at 10:01 PM James Almer <jamr...@gmail.com> wrote: > On 9/4/2019 4:28 PM, Paul B Mahol wrote: > > + vpmulld m3, m1, m0 > > + vpaddd m1, m3, m2 > > pmulld m1, m0 > paddd m1, m2
Could use pmaddwd instead as well, it's faster than pmulld on pretty much every CPU. > > + mova m2, m4 > > Pointless mova. Just use m4 in the vpgatherdd below. No, it's required. Gathers overwrite the mask register. > > + vpgatherdd m5, [srcq + m1], m2 > > + vextracti128 xm3, m5, 1 > > + vpshufb m1, m5, m6 > > + vpshufb m2, m3, m6 > > You could make these two pshufb use xmm regs, since you don't care > what's in the upper 128 bits. Or a single ymm pshufb before the vectracti128. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
