On Sun, Nov 02, 2014 at 07:31:48PM -0300, James Almer wrote: > Two to four times faster depending on instruction set, block size and channel > count. > > Signed-off-by: James Almer <jamr...@gmail.com> > --- > TODO: 16 bits indep for 4, 6 and 8 channels. 24/32 bits indep for 8 channels. > AVX2 and maybe MMX versions. > Planar? > > libavcodec/arm/flacdsp_init_arm.c | 2 +- > libavcodec/flacdec.c | 6 +- > libavcodec/flacdsp.c | 6 +- > libavcodec/flacdsp.h | 6 +- > libavcodec/flacenc.c | 2 +- > libavcodec/x86/flacdsp.asm | 206 > ++++++++++++++++++++++++++++++++++++++ > libavcodec/x86/flacdsp_init.c | 48 ++++++++- > 7 files changed, 264 insertions(+), 12 deletions(-) [...] > + mova m0, [in0q] > + mova m1, [in0q+in1q] > +%if %1 > 2 > + mova m2, [in0q+in2q] > + mova m3, [in0q+in3q] > +%if %1 > 4 > + mova m4, [in0q+in4q] > + mova m5, [in0q+in5q] > +%endif > +%endif > + pslld m0, m%2 > + pslld m1, m%2 > +%if %1 > 2 > + pslld m2, m%2 > + pslld m3, m%2 > +%if %1 > 4 > + pslld m4, m%2 > + pslld m5, m%2 > +%endif > +%endif
Can't you do something like this? (untested)
pslld m0, [in0q], m%2
%assign i 0
%rep %1
pslld m%i, [in0q+in%iq], m%2
%assign i i+1
%endrep
[...]
--
Clément B.
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