1) Given a perfect compiler, once compiled any interpreted code would be as fast as a native implementation.
2) How good a job your compiler does is dependent on many things, majorly the complexity of the code being compiled.
Fannkuch is extremely trivial code and really boils down to indirect array manipulation. It's interesting when comparing native/interpreted code because it indicates how much overhead is incurred with indirect memory access, but it's not something that provides any indication of how statically compiled javascript would generally perform against native code.
1) Given a perfect compiler, once compiled any interpreted code would be as fast as a native implementation.
2) How good a job your compiler does is dependent on many things, majorly the complexity of the code being compiled.
Fannkuch is extremely trivial code and really boils down to indirect array manipulation. It's interesting when comparing native/interpreted code because it indicates how much overhead is incurred with indirect memory access, but it's not something that provides any indication of how statically compiled javascript would generally perform against native code.