[C++11] Add 'override' keyword to virtual methods that override their base class.

llvm-svn: 203220
diff --git a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
index cb4f8cb..9baf1ff 100644
--- a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -144,7 +144,7 @@
     initializeTwoAddressInstructionPassPass(*PassRegistry::getPassRegistry());
   }
 
-  virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+  void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.setPreservesCFG();
     AU.addRequired<AliasAnalysis>();
     AU.addPreserved<LiveVariables>();
@@ -156,7 +156,7 @@
   }
 
   /// runOnMachineFunction - Pass entry point.
-  bool runOnMachineFunction(MachineFunction&);
+  bool runOnMachineFunction(MachineFunction&) override;
 };
 } // end anonymous namespace