[FFmpeg-devel] [PATCH] fix for roundup issue 2127

[Reimar Döffinger]

On Fri, Dec 31, 2010 at 10:59:01AM -0500, Ronald S. Bultje wrote:
> Hi,
> 
> On Fri, Dec 31, 2010 at 10:55 AM, Reimar D?ffinger
> <Reimar.Doeffinger at gmx.de> wrote:
> > which I think makes this unacceptable, at least if we still have to
> > policy that fast code in as many cases as possible is more important
> > that compilation with options that are only useful for debugging.
> 
> The code is faster after his patch; the original code does 6 leas, the
> new code uses direct addressing.

Well, it still needs gcc to generate the *3 value. By moving that into
the asm code (and making the strides inout values) I think it should be
possible to make it work with only 4 registers, though it might be
slower (instruction scheduling may be a bit problematic there).