Make BlockEntrace program points taggable.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71280 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Analysis/PathSensitive/GRCoreEngine.h

@@ -539,7 +539,9 @@ public:
     return getBlockCounter().getNumVisited(B.getBlockID());
   }  
   
-  ExplodedNodeImpl* generateNodeImpl(const void* State);
+  ExplodedNodeImpl* generateNodeImpl(const void* State,
+                                     const void *tag = 0,
+                                     ExplodedNodeImpl *P = 0);
     
   CFGBlock* getBlock() const { return &B; }
 };
@@ -571,9 +573,13 @@ public:
     return getPredecessor()->getState();
   }
   
-  NodeTy* MakeNode(const StateTy* St) {  
-    return static_cast<NodeTy*>(NB.generateNodeImpl(St));
+  NodeTy* MakeNode(const StateTy* St, const void *tag = 0) {  
+    return static_cast<NodeTy*>(NB.generateNodeImpl(St, tag));
   }
+  
+  NodeTy *generateNode(const StateTy *St, NodeTy *Pred, const void *tag = 0) {
+    return static_cast<NodeTy*>(NB.generateNodeImpl(St, tag, Pred));
+  }                                
 };
 
   

include/clang/Analysis/ProgramPoint.h

@@ -131,7 +131,8 @@ public:
                
 class BlockEntrance : public ProgramPoint {
 public:
-  BlockEntrance(const CFGBlock* B) : ProgramPoint(B, BlockEntranceKind) {}
+  BlockEntrance(const CFGBlock* B, const void *tag = 0)
+    : ProgramPoint(B, BlockEntranceKind, tag) {}
     
   CFGBlock* getBlock() const {
     return reinterpret_cast<CFGBlock*>(getData1NoMask());

lib/Analysis/GRCoreEngine.cpp

@@ -555,16 +555,17 @@ GREndPathNodeBuilderImpl::~GREndPathNodeBuilderImpl() {
   if (!HasGeneratedNode) generateNodeImpl(Pred->State);
 }
 
-ExplodedNodeImpl* GREndPathNodeBuilderImpl::generateNodeImpl(const void* State){
-  HasGeneratedNode = true;
-    
+ExplodedNodeImpl*
+GREndPathNodeBuilderImpl::generateNodeImpl(const void* State,
+                                           const void *tag,
+                                           ExplodedNodeImpl* P) {
+  HasGeneratedNode = true;    
   bool IsNew;
   
   ExplodedNodeImpl* Node =
-    Eng.G->getNodeImpl(BlockEntrance(&B), State, &IsNew);
+    Eng.G->getNodeImpl(BlockEntrance(&B, tag), State, &IsNew);
   
-
-  Node->addPredecessor(Pred);
+  Node->addPredecessor(P ? P : Pred);
   
   if (IsNew) {
     Node->markAsSink();