Subzero: Use 'override' as appropriate for C++11.

src/IceCfgNode.cpp

 //===- subzero/src/IceCfgNode.cpp - Basic block (node) implementation -----===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the CfgNode class, including the complexities
@@ skipping 452 matching lines @@
 // ======================== Dump routines ======================== //
 
 void CfgNode::emit(Cfg *Func) const {
   Func->setCurrentNode(this);
   Ostream &Str = Func->getContext()->getStrEmit();
   if (Func->getEntryNode() == this) {
     Str << Func->getContext()->mangleName(Func->getFunctionName()) << ":\n";
   }
   Str << getAsmName() << ":\n";
   for (PhiList::const_iterator I = Phis.begin(), E = Phis.end(); I != E; ++I) {
-    InstPhi *Inst = *I;
-    if (Inst->isDeleted())
+    InstPhi *Phi = *I;
+    if (Phi->isDeleted())
       continue;
     // Emitting a Phi instruction should cause an error.
-    Inst->emit(Func);
+    Inst *Instr = Phi;
+    Instr->emit(Func);
   }
   for (InstList::const_iterator I = Insts.begin(), E = Insts.end(); I != E;
        ++I) {
     Inst *Inst = *I;
     if (Inst->isDeleted())
       continue;
     // Here we detect redundant assignments like "mov eax, eax" and
     // suppress them.
     if (Inst->isRedundantAssign())
       continue;
@@ skipping 84 matching lines @@
          I != E; ++I) {
       if (I != OutEdges.begin())
         Str << ", ";
       Str << "%" << (*I)->getName();
     }
     Str << "\n";
   }
 }
 
 } // end of namespace Ice