Subzero: Improve class definition hygiene.

src/IceConditionCodesX8632.h

 //===- subzero/src/IceConditionCodesX8632.h - Condition Codes ---*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares the condition codes for x86-32.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef SUBZERO_SRC_ICECONDITIONCODESX8632_H
 #define SUBZERO_SRC_ICECONDITIONCODESX8632_H
 
 #include "IceDefs.h"
 #include "IceInstX8632.def"
 
 namespace Ice {
 
 class CondX86 {
+  CondX86() = delete;
+  CondX86(const CondX86 &) = delete;
+  CondX86 &operator=(const CondX86 &) = delete;
+
 public:
   // An enum of condition codes used for branches and cmov. The enum value
   // should match the value used to encode operands in binary instructions.
   enum BrCond {
 #define X(tag, encode, opp, dump, emit) tag encode,
     ICEINSTX8632BR_TABLE
 #undef X
         Br_None
   };
 
   // An enum of condition codes relevant to the CMPPS instruction. The enum
   // value should match the value used to encode operands in binary
   // instructions.
   enum CmppsCond {
 #define X(tag, emit) tag,
     ICEINSTX8632CMPPS_TABLE
 #undef X
         Cmpps_Invalid
   };
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICECONDITIONCODESX8632_H