[webkit-dev] SquirrelFish Peformance
darin at apple.com
Mon Jul 7 09:17:30 PDT 2008
On Jul 6, 2008, at 8:08 PM, KwangYul Seo wrote:
> 1) Bytecode size
> Is SquirrelFish bytecode compact? How much size reduction can I
> expect from normal JS source code?
The current form of bytecode is relatively compact compared to the
syntax tree representation. I'm not aware of a numeric figure though.
A persistent form of the bytecode would be even more compact, because
opcodes take an entire machine word, but in a streamed form they would
only need more like a byte each.
> 2) Compile speed
> I see the overall performance of SuqirrelFIsh is quite impressive.
> source code to bytecode vs. how long it takes to execute the
> bytecode. I guess it is much faster than JIT compiler, but I could
> not find the exact number.
The performance benchmarks include both compilation and execution. We
don't have a separate compilation benchmark.
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