Speedup from Exupery for SqueakElib

[Rob Withers]

Hi Bryce,

I am very interested in Exupery.   Once I have wrapped up developing and 
debugging my little EChat application in SqueakElib, I will be more than 
happy to help debug Exupery, if I can understand it.   It will probably be 
after Thanksgiving holidays next week, before I'll be able to load and run 
it.  Thanks for your help.  Once I get some familiarity, I may ask for 
further details regarding larger contexts and the extra long jump bytecodes.

Cheers,
Rob

----- Original Message ----- 
From: <bryce at kampjes.demon.co.uk>
To: "Discussion about Exupery a native code compiler." 
<exupery at lists.squeakfoundation.org>
Sent: Sunday, November 18, 2007 1:30 PM
Subject: Speedup from Exupery for SqueakElib


> Hi,
> Thanks for your interest in Exupery. First, Exupery will probably
> provide a speed up now but it will also cause crashed and bugs.
> I'd suggest delaying integration until Exupery is more stable..
>
> If you're interested in helping to debug Exupery, that would be
> great. At this stage, it's probably more sensible to talk, use Exupery
> as an excuse to delay optimising but keep your options open. Building
> one experiment on top of another multiplies risks a little too much
> for my tastes. From what I understand, it's really the potential of
> full method inlining that should be most interesting for your project
> but that's not planned until after Exupery's 1.0 release.
>
> That said, if you're interested in knowing what Exupery can do now, or
> should be able to do in the future feel free to ask or play with it.
> There's prebuilt VM's for all major platforms though the Mac one is
> compiled without C compiler optimisation here:
>
>  http://wiki.squeak.org/squeak/Exupery
>
> Rob Withers writes:
> > Hi All!
> >
> > I have reached step 2.4 in my SqueakElib plan documented here:
> > http://wiki.squeak.org/squeak/6011, but I don't know anything about 
> > Exupery.
> > I suppose my first question is whether I am right in assuming that I 
> > will
> > see speedups if I incorporate Exupery?
> >
> > My next question is related to the work I did in steps 1.3, 1.4, and 
> > 1.5.  I
> > modified the VM to use larger contexts (80+7), to add extra long jump
> > bytecodes for jump:, jumpIfTrue: and jumpIfFalse:, and to add bytecodes 
> > for
> > doing receiver class tests.  Will these additions cause problems with
> > Exupery?
>
> It'll take some work but not too much. Exupery has it's own context
> classes which will need to be enlarged. This should be fairly easy to
> do. The same with adding extra log jump bytecodes.
>
> > If all is ok so far, I want to build my modified Windows VM with 
> > Exupery, so
> > I am reading http://wiki.squeak.org/squeak/5904.  I am confused as to 
> > which
> > VMMaker I can use to build.  I currently have VMMaker-tpr.58.mcz loaded.
> > Can you confirm that I need to either overwrite this VMMaker with the 
> > one
> > from the Exupery repository or that I need to build fresh with the one 
> > from
> > the Exupery repository?   Also, where is the VMMaker from the Exupery
> > repository - where is the Exupery repository?  Finally, what is the best
> > Subversion client for Windows and how do I connect to this Exupery
> > repository?
>
> Instructions on building on Windows are here:
> http://wiki.squeak.org/squeak/5904
>
> I've only done builds on Linux.
>
> The Exupery source is held on SqueakSource here:
> http://www.squeaksource.com/Exupery
>
> Bryce
>
> P.S. I'd suggest using the latest Exupery version from SqueakSource
> published today rather than the released version. I just fixed an
> important bug that makes it much more stable.
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