// 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.
/// 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;
+ }
};
//===----------------------------------------------------------------------===//
// destroy - Release memory for the call graph
virtual void destroy() {
/// CallsExternalNode is not in the function map, delete it explicitly.
+ CallsExternalNode->allReferencesDropped();
delete CallsExternalNode;
CallsExternalNode = 0;
CallGraph::destroy();
void CallGraph::destroy() {
if (FunctionMap.empty()) return;
+ // Reset all node's use counts to zero before deleting them to prevent an
+ // assertion from firing.
+#ifndef NDEBUG
+ for (FunctionMapTy::iterator I = FunctionMap.begin(), E = FunctionMap.end();
+ I != E; ++I)
+ I->second->allReferencesDropped();
+#endif
+
for (FunctionMapTy::iterator I = FunctionMap.begin(), E = FunctionMap.end();
I != E; ++I)
delete I->second;