[webkit-dev] Squirrelfish

Cameron Zwarich cwzwarich at webkit.org
Tue Apr 14 07:32:14 PDT 2009

On 14-Apr-09, at 10:15 AM, thouraya andolsi wrote:

> Hi,
> I had a look on the squirrelfish source code and I saw that there is  
> no mixed mode. It means we use JIT or interpreter but we can't  
> switch to interpreter if the JIT fails.
> Is it OK ? or I'm wrong ?

In theory, it should be possible for JavaScriptCore to support mixed- 
mode execution, because the bytecode interpreter and JIT use the same  
register file. However, there are currently a number of more minor  
incompatibilities between the bytecode interpreter and the JIT that  
make it more complicated than simply flipping a switch and having it  


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