MIPS: Fix build after r22923.

src/mips64/constants-mips64.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef  V8_MIPS_CONSTANTS_H_
 #define  V8_MIPS_CONSTANTS_H_
 
 // UNIMPLEMENTED_ macro for MIPS.
 #ifdef DEBUG
 #define UNIMPLEMENTED_MIPS()                                                  \
@@ skipping 582 matching lines @@
   less_equal    = 14,
   greater       = 15,
   ueq           = 16,  // Unordered or Equal.
   nue           = 17,  // Not (Unordered or Equal).
 
   cc_always     = 18,
 
   // Aliases.
   carry         = Uless,
   not_carry     = Ugreater_equal,
-  zero          = equal,
+  Zero          = equal,
   eq            = equal,
   not_zero      = not_equal,
   ne            = not_equal,
   nz            = not_equal,
   sign          = negative,
   not_sign      = positive,
   mi            = negative,
   pl            = positive,
   hi            = Ugreater,
   ls            = Uless_equal,
@@ skipping 329 matching lines @@
 
 // TODO(plind): below should be based on kPointerSize
 // TODO(plind): find all usages and remove the needless instructions for n64.
 const int kCArgsSlotsSize = kCArgSlotCount * Instruction::kInstrSize * 2;
 
 const int kBranchReturnOffset = 2 * Instruction::kInstrSize;
 
 } }   // namespace v8::internal
 
 #endif    // #ifndef V8_MIPS_CONSTANTS_H_