1 files changed, 35 insertions, 33 deletions

diff --git a/include/llvm/CodeGen/MachineDominators.h b/include/llvm/CodeGen/MachineDominators.h
index 40b2542fd6..e41d206da6 100644
--- a/include/llvm/CodeGen/MachineDominators.h
+++ b/include/llvm/CodeGen/MachineDominators.h
@@ -41,15 +41,15 @@ class MachineDominatorTree : public MachineFunctionPass {
 public:
   static char ID; // Pass ID, replacement for typeid
   DominatorTreeBase<MachineBasicBlock>* DT;
-  
+
   MachineDominatorTree();
-  
+
   ~MachineDominatorTree();
-  
+
   DominatorTreeBase<MachineBasicBlock>& getBase() { return *DT; }
-  
+
   virtual void getAnalysisUsage(AnalysisUsage &AU) const;
-  
+
   /// getRoots -  Return the root blocks of the current CFG.  This may include
   /// multiple blocks if we are computing post dominators.  For forward
   /// dominators, this will always be a single block (the entry node).
@@ -57,33 +57,35 @@ public:
   inline const std::vector<MachineBasicBlock*> &getRoots() const {
     return DT->getRoots();
   }
-  
+
   inline MachineBasicBlock *getRoot() const {
     return DT->getRoot();
   }
-  
+
   inline MachineDomTreeNode *getRootNode() const {
     return DT->getRootNode();
   }
-  
+
   virtual bool runOnMachineFunction(MachineFunction &F);
-  
-  inline bool dominates(MachineDomTreeNode* A, MachineDomTreeNode* B) const {
+
+  inline bool dominates(const MachineDomTreeNode* A,
+                        const MachineDomTreeNode* B) const {
     return DT->dominates(A, B);
   }
-  
-  inline bool dominates(MachineBasicBlock* A, MachineBasicBlock* B) const {
+
+  inline bool dominates(const MachineBasicBlock* A,
+                        const MachineBasicBlock* B) const {
     return DT->dominates(A, B);
   }
-  
+
   // dominates - Return true if A dominates B. This performs the
   // special checks necessary if A and B are in the same basic block.
-  bool dominates(MachineInstr *A, MachineInstr *B) const {
-    MachineBasicBlock *BBA = A->getParent(), *BBB = B->getParent();
+  bool dominates(const MachineInstr *A, const MachineInstr *B) const {
+    const MachineBasicBlock *BBA = A->getParent(), *BBB = B->getParent();
     if (BBA != BBB) return DT->dominates(BBA, BBB);
 
     // Loop through the basic block until we find A or B.
-    MachineBasicBlock::iterator I = BBA->begin();
+    MachineBasicBlock::const_iterator I = BBA->begin();
     for (; &*I != A && &*I != B; ++I)
       /*empty*/ ;
 
@@ -95,43 +97,43 @@ public:
     //  return &*I == B;
     //}
   }
-  
+
   inline bool properlyDominates(const MachineDomTreeNode* A,
-                                MachineDomTreeNode* B) const {
+                                const MachineDomTreeNode* B) const {
     return DT->properlyDominates(A, B);
   }
-  
-  inline bool properlyDominates(MachineBasicBlock* A,
-                                MachineBasicBlock* B) const {
+
+  inline bool properlyDominates(const MachineBasicBlock* A,
+                                const MachineBasicBlock* B) const {
     return DT->properlyDominates(A, B);
   }
-  
+
   /// findNearestCommonDominator - Find nearest common dominator basic block
   /// for basic block A and B. If there is no such block then return NULL.
   inline MachineBasicBlock *findNearestCommonDominator(MachineBasicBlock *A,
                                                        MachineBasicBlock *B) {
     return DT->findNearestCommonDominator(A, B);
   }
-  
+
   inline MachineDomTreeNode *operator[](MachineBasicBlock *BB) const {
     return DT->getNode(BB);
   }
-  
+
   /// getNode - return the (Post)DominatorTree node for the specified basic
   /// block.  This is the same as using operator[] on this class.
   ///
   inline MachineDomTreeNode *getNode(MachineBasicBlock *BB) const {
     return DT->getNode(BB);
   }
-  
+
   /// addNewBlock - Add a new node to the dominator tree information.  This
-  /// creates a new node as a child of DomBB dominator node,linking it into 
+  /// creates a new node as a child of DomBB dominator node,linking it into
   /// the children list of the immediate dominator.
   inline MachineDomTreeNode *addNewBlock(MachineBasicBlock *BB,
                                          MachineBasicBlock *DomBB) {
     return DT->addNewBlock(BB, DomBB);
   }
-  
+
   /// changeImmediateDominator - This method is used to update the dominator
   /// tree information when a node's immediate dominator changes.
   ///
@@ -139,19 +141,19 @@ public:
                                        MachineBasicBlock* NewIDom) {
     DT->changeImmediateDominator(N, NewIDom);
   }
-  
+
   inline void changeImmediateDominator(MachineDomTreeNode *N,
                                        MachineDomTreeNode* NewIDom) {
     DT->changeImmediateDominator(N, NewIDom);
   }
-  
+
   /// eraseNode - Removes a node from  the dominator tree. Block must not
   /// dominate any other blocks. Removes node from its immediate dominator's
   /// children list. Deletes dominator node associated with basic block BB.
   inline void eraseNode(MachineBasicBlock *BB) {
     DT->eraseNode(BB);
   }
-  
+
   /// splitBlock - BB is split and now it has one successor. Update dominator
   /// tree to reflect this change.
   inline void splitBlock(MachineBasicBlock* NewBB) {
@@ -160,12 +162,12 @@ public:
 
   /// isReachableFromEntry - Return true if A is dominated by the entry
   /// block of the function containing it.
-  bool isReachableFromEntry(MachineBasicBlock *A) {
+  bool isReachableFromEntry(const MachineBasicBlock *A) {
     return DT->isReachableFromEntry(A);
   }
 
   virtual void releaseMemory();
-  
+
   virtual void print(raw_ostream &OS, const Module*) const;
 };
 
@@ -179,7 +181,7 @@ template<class T> struct GraphTraits;
 template <> struct GraphTraits<MachineDomTreeNode *> {
   typedef MachineDomTreeNode NodeType;
   typedef NodeType::iterator  ChildIteratorType;
-  
+
   static NodeType *getEntryNode(NodeType *N) {
     return N;
   }