[webkit-dev] arm jit

[Geoffrey Garen]

> It could be worth trying a stub function that triggers the  
> compilation of the function should it not be present, but i'm not  
> sure what that would really save as we still need the arity checks  
> inline

A design that I like is a stub function that triggers compilation (so  
the caller can always "just call"), combined with an arity check in  
the callee, which linked calls can skip (by linking to a label past  
the end of the arity check).

I think that could simplify the calling code, while reducing its  
footprint.

Geoff