Reduce copying, redundancy & repetition for codegen of comparison instructions

runtime/vm/constants_mips.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef RUNTIME_VM_CONSTANTS_MIPS_H_
 #define RUNTIME_VM_CONSTANTS_MIPS_H_
 
 #include "platform/assert.h"
 
 namespace dart {
@@ skipping 238 matching lines @@
   EQ,   // equal
   NE,   // not equal
   GT,   // greater than
   GE,   // greater equal
   LT,   // less than
   LE,   // less equal
   UGT,  // unsigned greater than
   UGE,  // unsigned greater equal
   ULT,  // unsigned less than
   ULE,  // unsigned less equal
+  INVALID_RELATION
 };
 
 
 // Constants used for the decoding or encoding of the individual fields of
 // instructions. Based on the "Table 4.25 CPU Instruction Format Fields".
 enum InstructionFields {
   kOpcodeShift = 26,
   kOpcodeBits = 6,
   kRsShift = 21,
   kRsBits = 5,
@@ skipping 365 matching lines @@
 #endif  // defined(DEBUG)
 
  private:
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_CONSTANTS_MIPS_H_