GCC/ObjC enhancements, comments requested

[Joern Rennecke]

> I don't like to base the functionality on the information emitted by  
> compiler at compile time. The set of functions that can be called is not  
> limited to the functions compiled by the compiler; what happens if I write a  
> JIT compiler myself and want those functions use the native convention calls?  
I think then the JIT compiler would have to provide this information.