[LLVMdev] Call in-library only class member

[Sebastian Dreßler]

Hi,

I'm trying to call class members which are not used within the original 
source code and therefore are not declared within bitcode. An example 
would be calling std::vector<T>::size(). Right now I'm using a helper 
function, e.g.

int f(vector<int> &v) {
     return (int)v.size();
}

However, this solution is not as elegant as I would like it to have, 
mostly due to the fact that with changing T i have to provide additional 
code. So I wondered whether it is possible to declare a function and 
recompile the resulting bitcode again with the result that the correct 
function of the object gets called.

 From what I can see from [1] Kenneth Uildriks mentions JIT and also 
that a declaration can be included. But I'm unable to link this proposed 
solution to my actual problem.

Thanks,
Sebastian


[1]: How can we call an object's virtual function inside IR? 
http://groups.google.com/group/llvm-dev/browse_thread/thread/426dc51e1edb33e0/2c238292d16512ff?lnk=gst&q=call+object#2c238292d16512ff

-- 
Mit freundlichen Grüßen / Kind regards

Sebastian Dreßler

Zuse Institute Berlin (ZIB)
Takustraße 7
D-14195 Berlin-Dahlem
Germany

dressler at zib.de
Phone: +49 30 84185-261

http://www.zib.de/