Use instruction itinerary to determine what instructions are 'cheap'.

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

diff --git a/include/llvm/Analysis/PostDominators.h b/include/llvm/Analysis/PostDominators.h
index 171cfdb2eac386bf79ef9357f9e9d9e2a97266b2..b75dd909a9821cf97c4782eec646d2ed0e412c3f 100644 (file)
--- a/include/llvm/Analysis/PostDominators.h
+++ b/include/llvm/Analysis/PostDominators.h
@@ -25,7 +25,8 @@ struct PostDominatorTree : public FunctionPass {
   static char ID; // Pass identification, replacement for typeid
   DominatorTreeBase<BasicBlock>* DT;
 
-  PostDominatorTree() : FunctionPass(&ID) {
+  PostDominatorTree() : FunctionPass(ID) {
+    initializePostDominatorTreePass(*PassRegistry::getPassRegistry());
     DT = new DominatorTreeBase<BasicBlock>(true);
   }
 
@@ -36,19 +37,23 @@ struct PostDominatorTree : public FunctionPass {
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
     AU.setPreservesAll();
   }
-  
+
   inline const std::vector<BasicBlock*> &getRoots() const {
     return DT->getRoots();
   }
-  
+
   inline DomTreeNode *getRootNode() const {
     return DT->getRootNode();
   }
-  
+
   inline DomTreeNode *operator[](BasicBlock *BB) const {
     return DT->getNode(BB);
   }
-  
+
+  inline DomTreeNode *getNode(BasicBlock *BB) const {
+    return DT->getNode(BB);
+  }
+
   inline bool dominates(DomTreeNode* A, DomTreeNode* B) const {
     return DT->dominates(A, B);
   }
@@ -60,11 +65,15 @@ struct PostDominatorTree : public FunctionPass {
   inline bool properlyDominates(const DomTreeNode* A, DomTreeNode* B) const {
     return DT->properlyDominates(A, B);
   }
-  
+
   inline bool properlyDominates(BasicBlock* A, BasicBlock* B) const {
     return DT->properlyDominates(A, B);
   }
 
+  inline BasicBlock *findNearestCommonDominator(BasicBlock *A, BasicBlock *B) {
+    return DT->findNearestCommonDominator(A, B);
+  }
+
   virtual void releaseMemory() {
     DT->releaseMemory();
   }
@@ -74,13 +83,33 @@ struct PostDominatorTree : public FunctionPass {
 
 FunctionPass* createPostDomTree();
 
+template <> struct GraphTraits<PostDominatorTree*>
+  : public GraphTraits<DomTreeNode*> {
+  static NodeType *getEntryNode(PostDominatorTree *DT) {
+    return DT->getRootNode();
+  }
+
+  static nodes_iterator nodes_begin(PostDominatorTree *N) {
+    if (getEntryNode(N))
+      return df_begin(getEntryNode(N));
+    else
+      return df_end(getEntryNode(N));
+  }
+
+  static nodes_iterator nodes_end(PostDominatorTree *N) {
+    return df_end(getEntryNode(N));
+  }
+};
+
 /// PostDominanceFrontier Class - Concrete subclass of DominanceFrontier that is
 /// used to compute the a post-dominance frontier.
 ///
 struct PostDominanceFrontier : public DominanceFrontierBase {
   static char ID;
-  PostDominanceFrontier() 
-    : DominanceFrontierBase(&ID, true) {}
+  PostDominanceFrontier()
+    : DominanceFrontierBase(ID, true) {
+      initializePostDominanceFrontierPass(*PassRegistry::getPassRegistry());
+    }
 
   virtual bool runOnFunction(Function &) {
     Frontiers.clear();