add a dump() method on callgraph.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80524 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Analysis/CallGraph.h

@@ -156,7 +156,7 @@ public:
   void initialize(Module &M);
 
   void print(raw_ostream &o, Module *) const;
-
+  void dump() const;
 protected:
   // destroy - Release memory for the call graph
   virtual void destroy();

lib/Analysis/IPA/CallGraph.cpp

@@ -181,6 +181,9 @@ void CallGraph::print(raw_ostream &OS, Module*) const {
   for (CallGraph::const_iterator I = begin(), E = end(); I != E; ++I)
     I->second->print(OS);
 }
+void CallGraph::dump() const {
+  print(errs(), 0);
+}
 
 //===----------------------------------------------------------------------===//
 // Implementations of public modification methods