[squeak-dev] Re: [Vm-dev] New Cog VMs available...

[David T. Lewis]

On Thu, Jul 03, 2014 at 12:39:31AM +0200, Nicolas Cellier wrote:
>  
> 2014-07-03 0:18 GMT+02:00 Eliot Miranda <eliot.miranda at gmail.com>:
> >
> > On Wed, Jul 2, 2014 at 2:51 PM, Nicolas Cellier <
> > nicolas.cellier.aka.nice at gmail.com> wrote:
> >>
> >> 2014-07-02 23:32 GMT+02:00 Frank Shearar <frank.shearar at gmail.com>:
> >>
> >> On 2 July 2014 22:19, Eliot Miranda <eliot.miranda at gmail.com> wrote:
> >>> >
> >>> > On Wed, Jul 2, 2014 at 1:45 PM, Frank Shearar <frank.shearar at gmail.com wrote:
> >>> >>
> >>> >> On 1 July 2014 18:03, Eliot Miranda <eliot.miranda at gmail.com> wrote:
> >>> >> >
> >>> >> > at http://www.mirandabanda.org/files/Cog/VM/VM.r3024/.
> >>> >>
> >>> >> CI updated accordingly! For Spur:
> >>> >> http://build.squeak.org/job/SqueakTrunkOnSpur/29/console
> >>> >
> >>> > and I'm working on the large integer failures right now.  that should
> >>> fix
> >>> > most of the errors.
> >>>
> >>> Excellent! That will end the streak of red in the SqueakTrunk build
> >>> history.
> >>>
> >>> Thanks!
> >>>
> >> I've got a working solution ready for large int plugin.
> >> digitDiv and montgomery are broken due to the same bug // 256...
> >> I can publish if you want.
> >>
> >
> > Forgive me but I went ahead and fixed it.  I just figured out that I could
> > have the code generator output asserts at every divide by a power of two to
> > check that the results agreed with signed shifts and hence easily caught
> > all the places where there was a bug.  I've also realised that I can have
> > the code generator output #if #else #endif code for remapOop:in: and so not
> > incur any overhead in Spur, which doesn't GC during primitives.
> >
> No matter, I'll publish later because it is a good cleanup...
> Most of the divides are unsigned and OK (like // 8 and \\ 8 for counting
> number of bytes/bits in a shift)
> Only 3 places were broken: sub, div, and montgomery mul.

Nicolas,

Please do publish it when you are able.

Thanks,
Dave