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[oota-llvm.git] / include / llvm / Analysis / CallGraph.h

diff --git a/include/llvm/Analysis/CallGraph.h b/include/llvm/Analysis/CallGraph.h
index cd17717909c53563977a5e59639fa7142690bc21..a4884edd5bd6b42328d3e5be2bce938ec01026ff 100644 (file)
--- a/include/llvm/Analysis/CallGraph.h
+++ b/include/llvm/Analysis/CallGraph.h
@@ -52,13 +52,13 @@
 #define LLVM_ANALYSIS_CALLGRAPH_H
 
 #include "llvm/Function.h"
+#include "llvm/Pass.h"
 #include "llvm/ADT/GraphTraits.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/CallSite.h"
 #include "llvm/Support/ValueHandle.h"
 #include "llvm/System/IncludeFile.h"
 #include <map>
-#include <vector>
 
 namespace llvm {
 
@@ -187,6 +187,9 @@ public:
   
   // CallGraphNode ctor - Create a node for the specified function.
   inline CallGraphNode(Function *f) : F(f), NumReferences(0) {}
+  ~CallGraphNode() {
+    assert(NumReferences == 0 && "Node deleted while references remain");
+  }
   
   //===---------------------------------------------------------------------
   // Accessor methods.
@@ -277,6 +280,11 @@ public:
   /// time, so it should be used sparingly.
   void replaceCallEdge(CallSite CS, CallSite NewCS, CallGraphNode *NewNode);
   
+  /// allReferencesDropped - This is a special function that should only be
+  /// used by the CallGraph class.
+  void allReferencesDropped() {
+    NumReferences = 0;
+  }
 };
 
 //===----------------------------------------------------------------------===//