[LLVMdev] Shouldn't need a "Module Graph"

[David Crowe]

The way we are doing it, per Vikram's recommendation, is to provide a 
mapping between the callers nodes and the callees nodes at the time of the 
call.  Given that the only way they can communicate is through the 
parameters, globals, and return node, this is fairly easy.  You must take 
into account that the DSGraphs may be different shapes though.

Dave