- Added a map cache for literal objects. This will...

src/objects-inl.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 307 matching lines @@
 bool Object::IsSymbolTable() {
   return IsHashTable() && this == Heap::symbol_table();
 }
 
 
 bool Object::IsCompilationCacheTable() {
   return IsHashTable();
 }
 
 
+bool Object::IsMapCache() {
+  return IsHashTable();
+}
+
+
 bool Object::IsPrimitive() {
   return IsOddball() || IsNumber() || IsString();
 }
 
 
 bool Object::IsGlobalObject() {
   return IsHeapObject() &&
       ((HeapObject::cast(this)->map()->instance_type() ==
         JS_GLOBAL_OBJECT_TYPE) ||
        (HeapObject::cast(this)->map()->instance_type() ==
@@ skipping 767 matching lines @@
 
 // ------------------------------------
 // Cast operations
 
 
 CAST_ACCESSOR(FixedArray)
 CAST_ACCESSOR(DescriptorArray)
 CAST_ACCESSOR(Dictionary)
 CAST_ACCESSOR(SymbolTable)
 CAST_ACCESSOR(CompilationCacheTable)
+CAST_ACCESSOR(MapCache)
 CAST_ACCESSOR(String)
 CAST_ACCESSOR(SeqString)
 CAST_ACCESSOR(AsciiString)
 CAST_ACCESSOR(TwoByteString)
 CAST_ACCESSOR(ConsString)
 CAST_ACCESSOR(SlicedString)
 CAST_ACCESSOR(ExternalString)
 CAST_ACCESSOR(ExternalAsciiString)
 CAST_ACCESSOR(ExternalTwoByteString)
 CAST_ACCESSOR(JSObject)
@@ skipping 1037 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_