MIPS: Specialize FixedTypedArray<> set and get functions to solve unaligned double access.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4877 matching lines @@
 
 template <class Traits>
 class FixedTypedArray: public FixedTypedArrayBase {
  public:
   typedef typename Traits::ElementType ElementType;
   static const InstanceType kInstanceType = Traits::kInstanceType;
 
   // Casting:
   static inline FixedTypedArray<Traits>* cast(Object* obj);
 
+  static inline int ElementOffset(int index) {
+    return kDataOffset + index * sizeof(ElementType);
+  }
+
   static inline int SizeFor(int length) {
-    return kDataOffset + length * sizeof(ElementType);
+    return ElementOffset(length);
   }
 
   inline ElementType get_scalar(int index);
   MUST_USE_RESULT inline MaybeObject* get(int index);
   inline void set(int index, ElementType value);
 
   // This accessor applies the correct conversion from Smi, HeapNumber
   // and undefined.
   MUST_USE_RESULT MaybeObject* SetValue(uint32_t index, Object* value);
 
@@ skipping 5857 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_