diff --git a/llvm/include/llvm/Analysis/Dominators.h b/llvm/include/llvm/Analysis/Dominators.h
index 9b0ef723efd4..956ed1a36f11 100644
--- a/llvm/include/llvm/Analysis/Dominators.h
+++ b/llvm/include/llvm/Analysis/Dominators.h
@@ -670,6 +670,8 @@ public:
     delete DT;
   }
   
+  DominatorTreeBase<BasicBlock>& getBase() { return *DT; }
+  
   /// 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).
diff --git a/llvm/include/llvm/CodeGen/MachineDominators.h b/llvm/include/llvm/CodeGen/MachineDominators.h
index 01a09a792265..bddc5c279693 100644
--- a/llvm/include/llvm/CodeGen/MachineDominators.h
+++ b/llvm/include/llvm/CodeGen/MachineDominators.h
@@ -54,10 +54,12 @@ public:
     delete DT;
   }
   
-   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
-     AU.setPreservesAll();
-     MachineFunctionPass::getAnalysisUsage(AU);
-   }
+  DominatorTreeBase<MachineBasicBlock>& getBase() { return *DT; }
+  
+  virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+    AU.setPreservesAll();
+    MachineFunctionPass::getAnalysisUsage(AU);
+  }
   
   /// getRoots -  Return the root blocks of the current CFG.  This may include
   /// multiple blocks if we are computing post dominators.  For forward