In-object double fields unboxing (for 64-bit only).

src/bootstrapper.cc

 // Copyright 2014 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.
 
 #include "src/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/code-stubs.h"
 #include "src/extensions/externalize-string-extension.h"
 #include "src/extensions/free-buffer-extension.h"
@@ skipping 933 matching lines @@
 
     PropertyAttributes attribs = static_cast<PropertyAttributes>(
         DONT_ENUM | DONT_DELETE);
 
     Handle<AccessorInfo> array_length =
         Accessors::ArrayLengthInfo(isolate, attribs);
     {  // Add length.
       CallbacksDescriptor d(
           Handle<Name>(Name::cast(array_length->name())),
           array_length, attribs);
-      array_function->initial_map()->AppendDescriptor(&d);
+      initial_map->AppendDescriptor(&d);
     }
 
     // array_function is used internally. JS code creating array object should
     // search for the 'Array' property on the global object and use that one
     // as the constructor. 'Array' property on a global object can be
     // overwritten by JS code.
     native_context()->set_array_function(*array_function);
 
     // Cache the array maps, needed by ArrayConstructorStub
     CacheInitialJSArrayMaps(native_context(), initial_map);
@@ skipping 119 matching lines @@
                             writable,
                             Representation::Tagged());
       initial_map->AppendDescriptor(&field);
     }
 
     initial_map->set_inobject_properties(5);
     initial_map->set_pre_allocated_property_fields(5);
     initial_map->set_unused_property_fields(0);
     initial_map->set_instance_size(
         initial_map->instance_size() + 5 * kPointerSize);
-    initial_map->set_visitor_id(StaticVisitorBase::GetVisitorId(*initial_map));
 
     // RegExp prototype object is itself a RegExp.
     Handle<Map> proto_map = Map::Copy(initial_map, "RegExpPrototype");
     proto_map->set_prototype(native_context()->initial_object_prototype());
     Handle<JSObject> proto = factory->NewJSObjectFromMap(proto_map);
     proto->InObjectPropertyAtPut(JSRegExp::kSourceFieldIndex,
                                  heap->query_colon_string());
     proto->InObjectPropertyAtPut(JSRegExp::kGlobalFieldIndex,
                                  heap->false_value());
     proto->InObjectPropertyAtPut(JSRegExp::kIgnoreCaseFieldIndex,
@@ skipping 566 matching lines @@
   Map::EnsureDescriptorSlack(initial_map, 1);
 
   PropertyAttributes attribs = static_cast<PropertyAttributes>(
       DONT_ENUM | DONT_DELETE);
 
   Handle<AccessorInfo> array_length =
       Accessors::ArrayLengthInfo(isolate(), attribs);
   {  // Add length.
     CallbacksDescriptor d(
         Handle<Name>(Name::cast(array_length->name())), array_length, attribs);
-    array_function->initial_map()->AppendDescriptor(&d);
+    initial_map->AppendDescriptor(&d);
   }
 
   return array_function;
 }
 
 
 bool Genesis::InstallNatives() {
   HandleScope scope(isolate());
 
   // Create a function for the builtins object. Allocate space for the
@@ skipping 1134 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 } }  // namespace v8::internal