[llvm-dev] Get instance of CallGraph of a module in the pass

[Riyad Parvez via llvm-dev]

Hello,

I want an instance of CallGraph in my pass. By looking at -dot-callgraph
source, I've tried something like this:

CallGraphWrapperPass *CGWP = new CallGraphWrapperPass();
PM.add(CGWP);
CallGraph *CG = &CGWP->getCallGraph();
PM.add(new MyPass(CG));


I get the following error:

/home/riyad/installs/llvm-3.7.0/include/llvm/PassSupport.h:95:38: error: no
matching constructor for initialization of
      'MyPass'
Pass *callDefaultCtor() { return new PassName(); }


My guess is pass manager needs pass with default constructor. Is there any
easy way to get instance of call graph in my pass?

Thanks in Advance,
Riyad
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