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From "Geir Magnusson Jr." <g...@pobox.com>
Subject Re: [drlvm] IPF functionality
Date Fri, 13 Oct 2006 05:55:15 GMT


Rana Dasgupta wrote:
> I think that over time, we will start seeing  IPF specific code files
> appearing ... eg., quite a different jit, IPFhelpers.cpp,
> IPFexception_filters.cpp, IPFnativestack.cpp,  IPFprofiledrivers.cpp etc.
> That is my impression of how most IPF ports go. Even in the main codebase
> they will virtually be a branch. While they are architecturally quite
> seperate, they are seperate enough to maybe not cause a lot of conflict.
> So the question is really one of how we want to manage this, and if we want
> to consider the IPF work as mainline work or secondary.

I think it's secondary from the POV of availability, where x86 is 
ubiquitous, not in importance as a platform.

> That is my
> understanding. I am fine with Geir's choice, and his comment about it being
> easier to manage one codeline makes sense. But I would request leaving this
> open for some more comments from the jit guys and others before we decide.

My point is that we don't need a "decision" to get moving forward.  We 
can just move forward with the status quo, and if we run into a problem, 
then we can decide what to do...

geir

> 
> Thanks,
> Rana
> 
> 
> 
>> On 10/12/06, Geir Magnusson Jr. <geir@pobox.com> wrote:
>> >
>> > How about trying to do in main line for now, reserving branch until
>> > needed?
>> >
>> > We'd agree that committers put in the patches and test on supported
>> > platforms (not IPF) and those doing the IPF work test and adjust as
>> > necessary.
>> >
>> > That way, we at least try to keep one codeline that we know works.  It
>> > also would "restrict" the freedom of the IPF contributions to stay
>> > within the bounds of the mainline code, and in the event an 
>> architecture
>> > change is needed to support IPF that would affect other platforms, we
>> > can talk together.
>> >
>> > I volunteer to help with the IPF patches.
>> >
>> >
> 

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