Enable the GRStateManager to do something when we finish a path. For example,

the ConstraintManager can print its internal state before its solver instance is
destroyed.

llvm-svn: 60204

clang/include/clang/Analysis/PathSensitive/ConstraintManager.h

@@ -51,6 +51,8 @@ public:
 
   virtual void print(const GRState* St, std::ostream& Out, 
                      const char* nl, const char *sep) = 0;
+
+  virtual void EndPath(const GRState* St) {}
 };
 
 ConstraintManager* CreateBasicConstraintManager(GRStateManager& statemgr);

clang/include/clang/Analysis/PathSensitive/GRExprEngine.h

@@ -414,6 +414,7 @@ public:
   ///  nodes when the control reaches the end of a function.
   void ProcessEndPath(EndPathNodeBuilder& builder) {
     getTF().EvalEndPath(*this, builder);
+    StateMgr.EndPath(builder.getState());
   }
   
   GRStateManager& getStateManager() { return StateMgr; }

clang/include/clang/Analysis/PathSensitive/GRState.h

@@ -536,6 +536,10 @@ public:
   const llvm::APSInt* getSymVal(const GRState* St, SymbolID sym) {
     return ConstraintMgr->getSymVal(St, sym);
   }
+
+  void EndPath(const GRState* St) {
+    ConstraintMgr->EndPath(St);
+  }
 };
   
 //===----------------------------------------------------------------------===//