diff --git a/include/llvm/CodeGen/MachineInstr.h b/include/llvm/CodeGen/MachineInstr.h
index fb6e46040a7..833a4a13e6d 100644
--- a/include/llvm/CodeGen/MachineInstr.h
+++ b/include/llvm/CodeGen/MachineInstr.h
@@ -190,6 +190,10 @@ public:
     return regNum;
   }
 
+  inline unsigned getReg() const {
+    assert(hasAllocatedReg() && "Cannot call MachineOperand::getReg()!");
+    return regNum;
+  }    
   
   friend std::ostream& operator<<(std::ostream& os, const MachineOperand& mop);