Re: [hatari-devel] 68030 and movem

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 18/09/2023 à 10:05, Andreas Grabher a écrit :
> > Am 17.09.2023 um 12:16 schrieb Andreas Grabher <andreas_g86@xxxxxxxxxx>:
> >
> > 
> > > Am 17.09.2023 um 12:08 schrieb Thorsten Otto <admin@xxxxxxxxxxx>:
> > >
> > > 
> > >
> > > On Sonntag, 17. September 2023 11:37:38 CEST Andreas Grabher wrote:
> > >
> > > > It might as well mean size of one single transfer, which might be 
> > > word or
> > >
> > > > long.
> > >
> > >
> > > Yes, this is actually the case.  See 
> > > https://www.atari-forum.com/viewtopic.php?p=451165#p451165 
> > > <https://www.atari-forum.com/viewtopic.php?p=451165#p451165> in 
> > > answer from agranlund, where i also wondered about which size was meant.
> >
> > Thank you! Then please ignore my first patch.
>
>  From my point of view the patch that was added yesterday to the 
> repository adds unnecessary overhead to variants of MOVEM that are not 
> affected by the special case.

Hi

these are the changes from WinUAE :

https://github.com/tonioni/WinUAE/commit/fe444426bf01e1be0523c391aaf1e34bf8758430

do you mean the ones that use "int predec = 0;" ? If so they should be 
optimized by the compiler.

Nicolas