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

Maciej Stachowiak mjs at apple.com
Wed Dec 24 11:49:07 PST 2008

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.


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