Refactor MemoryAllocator to allow big normal pages

src/utils.h

 // Copyright 2006-2008 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 153 matching lines @@
 template <typename T>
 static inline bool IsAligned(T value, T alignment) {
   ASSERT(IsPowerOf2(alignment));
   return (value & (alignment - 1)) == 0;
 }
 
 
 // Returns true if (addr + offset) is aligned.
 static inline bool IsAddressAligned(Address addr,
                                     intptr_t alignment,
-                                    int offset) {
+                                    int offset = 0) {
   intptr_t offs = OffsetFrom(addr + offset);
   return IsAligned(offs, alignment);
 }
 
 
 // Returns the maximum of the two parameters.
 template <typename T>
 static T Max(T a, T b) {
   return a < b ? b : a;
 }
@@ skipping 569 matching lines @@
 }
 
 template <class Dest, class Source>
 inline Dest BitCast(Source* source) {
   return BitCast<Dest>(reinterpret_cast<uintptr_t>(source));
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_UTILS_H_