MIPS: Add support for arch. revision 6 to mips32 port.

src/globals.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_GLOBALS_H_
 #define V8_GLOBALS_H_
 
 #include "include/v8stdint.h"
 
 #include "src/base/build_config.h"
@@ skipping 593 matching lines @@
     SAHF,
     // ARM
     VFP3,
     ARMv7,
     SUDIV,
     MLS,
     UNALIGNED_ACCESSES,
     MOVW_MOVT_IMMEDIATE_LOADS,
     VFP32DREGS,
     NEON,
-    // MIPS
+    // MIPS, MIPS64
     FPU,
+    FP64,
+    MIPSr1,
+    MIPSr2,
+    MIPSr6,
     // ARM64
     ALWAYS_ALIGN_CSP,
     NUMBER_OF_CPU_FEATURES
 };
 
 
 // Used to specify if a macro instruction must perform a smi check on tagged
 // values.
 enum SmiCheckType {
   DONT_DO_SMI_CHECK,
@@ skipping 125 matching lines @@
 enum MinusZeroMode {
   TREAT_MINUS_ZERO_AS_ZERO,
   FAIL_ON_MINUS_ZERO
 };
 
 } }  // namespace v8::internal
 
 namespace i = v8::internal;
 
 #endif  // V8_GLOBALS_H_