diff --git a/include/llvm/CodeGen/MachineDominators.h b/include/llvm/CodeGen/MachineDominators.h
index 11ad1ae1448..01a09a79226 100644
--- a/include/llvm/CodeGen/MachineDominators.h
+++ b/include/llvm/CodeGen/MachineDominators.h
@@ -54,6 +54,11 @@ public:
     delete 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
   /// dominators, this will always be a single block (the entry node).
@@ -76,10 +81,6 @@ public:
     return false;
   }
   
-  virtual void getAnalysisUsage(AnalysisUsage &AU) const {
-    AU.setPreservesAll();
-  }
-  
   inline bool dominates(MachineDomTreeNode* A, MachineDomTreeNode* B) const {
     return DT->dominates(A, B);
   }