[webkit-dev] SH4, MIPS, and legacy-ARM assemblers in JavaScriptCore

[Gavin Barraclough]

On the topic of JIT support, the baseline JIT's role is increasingly only to serve only to gather profiling data for the DFG JIT, and if you want high performance JavaScript on your platform you need to have the DFG JIT enabled.

As the purpose of the two JITs becomes increasingly coupled it may grow difficult to support the baseline JIT alone without the DFG JIT (we already have a maze of ifdefs for the two JITs, two interpreters, assembler support, value profiling support, etc), so any platforms that want to continue to keep a JIT enabled should probably look into supporting the DFG JIT sooner rather than later.

cheers,
G.


On Jun 23, 2012, at 7:12 AM, Zoltan Herczeg wrote:

> Good for me. Thanks for helping us. This will help to the buildbot
> maintainers as well, since if a patch cause a break where all of our names
> are CC'ed, they can just disable the JIT until the fix is landed. I think
> the several ports of JSC is something we should be proud of and I hope we
> can keep them in the future.
> 
> Regards,
> Zoltan
> 
>> Ah, sorry, I misunderstood!
>> 
>> What about having a convention that assembly port maintainers are CC'd on
>> bugs that require new assembler support?
>> 
>> This will give you probably 10 hours heads up before the patch lands.
>> 
>> -F
>> 
>> 
>> On Jun 22, 2012, at 9:29 PM, Zoltan Herczeg <zherczeg at webkit.org> wrote:
>> 
>>>> I don't want adding instructions to SH4, MIPS, and legacy ARM to be a
>>>> blocker for JSC work.
>>> 
>>> I didn't say you have to wait. I just said you should notify us that
>>> something is coming which will break the build.
>>> 
>>> Regards,
>>> Zoltan
>>> 
>>> 
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>>> webkit-dev mailing list
>>> webkit-dev at lists.webkit.org
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>> 
>> 
> 
> 
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