[webkit-dev] SquirrelFish Extreme for non x-86 platforms

[Maciej Stachowiak]

On Dec 24, 2008, at 1:52 PM, Javed Rabbani wrote:

> That means the current JS Engine (SquirrelFish Extreme) can be run  
> on embedded/mobile platforms in bytecode mode without JIT. Correct  
> me if I am wrong? If I am correct, then how to enable the engine's  
> bytecode mode? There are number of ENABLE switches related to  
> current JS engine...

It should compile with JIT disabled on platforms that do not support  
the JIT.

  - Maciej

>
>
> Regards,
> J R Shah
>
> On Thu, Dec 25, 2008 at 12:49 AM, Maciej Stachowiak <mjs at apple.com>  
> wrote:
>
> On Dec 24, 2008, at 6:46 AM, Holger Freyther wrote:
>
> On Wednesday 24 December 2008 14:00:19 Javed Rabbani wrote:
> I want to know whether WebKit JavaScript Engine SquirrelFish Extreme  
> (SFX)
> has been reported to work on any embedded, non-x86 platform?
>
> No, the extreme variant is only working on x86 and work on progress  
> on the
> amd64...
>
> To be more specific:
>
> 1) The JS engine should work on any CPU and on most reasonable  
> operating systems in bytecode mode. It's still pretty fast as  
> bytecode - nearly an order of magnitude faster than the old WebKit  
> JS engine.
>
> 2) Currently the JIT only fully works on x86 and will soon also work  
> on x86_64 (currently some basic tests pass but neither performance  
> nor correctness are where we want them to be).
>
> 3) We are considering ports of the JIT to other CPU architectures.  
> For mobile platforms, it's not entirely clear whether the JIT will  
> turn out to be better than the bytecode interpreter - the memory  
> cost might outweigh the speed benefit.
>
> Regards,
> Maciej
>
>
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