Put direct code pointers into JSFunction objects. This is a first step...

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 2676 matching lines @@
   return Smi::cast(function_data())->value();
 }
 
 
 bool JSFunction::IsBuiltin() {
   return context()->global()->IsJSBuiltinsObject();
 }
 
 
 Code* JSFunction::code() {
-  return shared()->code();
+  return Code::cast(READ_FIELD(this, kCodeOffset));
 }
 
 
 void JSFunction::set_code(Code* value) {
-  shared()->set_code(value);
+  // Skip the write barrier because code is never in new space.
+  ASSERT(!Heap::InNewSpace(value));
+  WRITE_FIELD(this, kCodeOffset, value);
 }
 
 
 Context* JSFunction::context() {
   return Context::cast(READ_FIELD(this, kContextOffset));
 }
 
 
 Object* JSFunction::unchecked_context() {
   return READ_FIELD(this, kContextOffset);
@@ skipping 51 matching lines @@
   if (map()->has_non_instance_prototype()) return map()->constructor();
   return instance_prototype();
 }
 
 bool JSFunction::should_have_prototype() {
   return map()->function_with_prototype();
 }
 
 
 bool JSFunction::is_compiled() {
-  return shared()->is_compiled();
+  return code()->kind() != Code::STUB;
 }
 
 
 int JSFunction::NumberOfLiterals() {
   return literals()->length();
 }
 
 
 Object* JSBuiltinsObject::javascript_builtin(Builtins::JavaScript id) {
   ASSERT(0 <= id && id < kJSBuiltinsCount);
@@ skipping 539 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_