Re: [libav-devel] [PATCH V2 39/43] jpeg2k: Optimize dequantization

Mon, 01 Jul 2013 00:32:34 -0700 

Le 30 juin 2013 15:43, "Jason Garrett-Glaser" <[email protected]> a écrit :
>
> On Fri, Jun 28, 2013 at 3:25 AM, Nicolas Bertrand
> <[email protected]> wrote:
> > From: Michael Niedermayer <[email protected]>
> >
> > Float:   4700 -> 2700 cycles
> > Integer: 4400 -> 2800 cycles
>
> Not to hold up the patch, but is it faster if band->i_stepsize or
> band->f_stepsize are loaded outside the loop?
Ok i ll in next patches
 It seems like aliasing
> might affect this code.
>
What do you mean ?
> Jason
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