Factor the code for collecting IV users out of LSR into an IVUsers class,

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

diff --git a/include/llvm/Analysis/PostDominators.h b/include/llvm/Analysis/PostDominators.h
index 5841da3fcfd0fb11ca8c7c4c3479fad6dc2bdfc5..cd6af74024a547adabce9e2ccbad3e6f183abddb 100644 (file)
--- a/include/llvm/Analysis/PostDominators.h
+++ b/include/llvm/Analysis/PostDominators.h
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -21,35 +21,48 @@ namespace llvm {
 /// PostDominatorTree Class - Concrete subclass of DominatorTree that is used to
 /// compute the a post-dominator tree.
 ///
-struct PostDominatorTree : public DominatorTreeBase {
+struct PostDominatorTree : public FunctionPass {
   static char ID; // Pass identification, replacement for typeid
+  DominatorTreeBase<BasicBlock>* DT;
 
-  PostDominatorTree() : 
-    DominatorTreeBase((intptr_t)&ID, true) {}
-
-  virtual bool runOnFunction(Function &F) {
-    reset();     // Reset from the last time we were run...
-    calculate(F);
-    return false;
+  PostDominatorTree() : FunctionPass(&ID) {
+    DT = new DominatorTreeBase<BasicBlock>(true);
   }
 
+  ~PostDominatorTree();
+
+  virtual bool runOnFunction(Function &F);
+
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
     AU.setPreservesAll();
   }
-private:
-  void calculate(Function &F);
-  DomTreeNode *getNodeForBlock(BasicBlock *BB);
-  unsigned DFSPass(BasicBlock *V, InfoRec &VInfo,unsigned N);
-  void Compress(BasicBlock *V, InfoRec &VInfo);
-  BasicBlock *Eval(BasicBlock *V);
-  void Link(BasicBlock *V, BasicBlock *W, InfoRec &WInfo);
-
-  inline BasicBlock *getIDom(BasicBlock *BB) const {
-    DenseMap<BasicBlock*, BasicBlock*>::const_iterator I = IDoms.find(BB);
-    return I != IDoms.end() ? I->second : 0;
+  
+  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 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);
+  }
+
+  virtual void print(std::ostream &OS, const Module* M= 0) const {
+    DT->print(OS, M);
   }
 };
 
+FunctionPass* createPostDomTree();
 
 /// PostDominanceFrontier Class - Concrete subclass of DominanceFrontier that is
 /// used to compute the a post-dominance frontier.
@@ -57,7 +70,7 @@ private:
 struct PostDominanceFrontier : public DominanceFrontierBase {
   static char ID;
   PostDominanceFrontier() 
-    : DominanceFrontierBase((intptr_t) &ID, true) {}
+    : DominanceFrontierBase(&ID, true) {}
 
   virtual bool runOnFunction(Function &) {
     Frontiers.clear();
@@ -78,9 +91,8 @@ private:
                               const DomTreeNode *Node);
 };
 
-} // End llvm namespace
+FunctionPass* createPostDomFrontier();
 
-// Make sure that any clients of this file link in PostDominators.cpp
-FORCE_DEFINING_FILE_TO_BE_LINKED(PostDominanceFrontier)
+} // End llvm namespace
 
 #endif