Add mips64 port.

src/full-codegen.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_FULL_CODEGEN_H_
 #define V8_FULL_CODEGEN_H_
 
 #include "src/v8.h"
 
 #include "src/allocation.h"
@@ skipping 97 matching lines @@
 #elif V8_TARGET_ARCH_ARM
   static const int kCodeSizeMultiplier = 149;
   static const int kBootCodeSizeMultiplier = 110;
 #elif V8_TARGET_ARCH_ARM64
 // TODO(all): Copied ARM value. Check this is sensible for ARM64.
   static const int kCodeSizeMultiplier = 149;
   static const int kBootCodeSizeMultiplier = 110;
 #elif V8_TARGET_ARCH_MIPS
   static const int kCodeSizeMultiplier = 149;
   static const int kBootCodeSizeMultiplier = 120;
+#elif V8_TARGET_ARCH_MIPS64
+  static const int kCodeSizeMultiplier = 149;
+  static const int kBootCodeSizeMultiplier = 120;
 #else
 #error Unsupported target architecture.
 #endif
 
  private:
   class Breakable;
   class Iteration;
 
   class TestContext;
 
@@ skipping 185 matching lines @@
 
   // Helper function to split control flow and avoid a branch to the
   // fall-through label if it is set up.
 #if V8_TARGET_ARCH_MIPS
   void Split(Condition cc,
              Register lhs,
              const Operand&  rhs,
              Label* if_true,
              Label* if_false,
              Label* fall_through);
+#elif V8_TARGET_ARCH_MIPS64
+  void Split(Condition cc,
+             Register lhs,
+             const Operand&  rhs,
+             Label* if_true,
+             Label* if_false,
+             Label* fall_through);
 #else  // All non-mips arch.
   void Split(Condition cc,
              Label* if_true,
              Label* if_false,
              Label* fall_through);
 #endif  // V8_TARGET_ARCH_MIPS
 
   // Load the value of a known (PARAMETER, LOCAL, or CONTEXT) variable into
   // a register.  Emits a context chain walk if if necessary (so does
   // SetVar) so avoid calling both on the same variable.
@@ skipping 600 matching lines @@
 
   Address start_;
   Address instruction_start_;
   uint32_t length_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FULL_CODEGEN_H_