[es6] Introduce spec compliant IsConstructor.

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/api-natives.h"
 #include "src/base/utils/random-number-generator.h"
 #include "src/code-stubs.h"
@@ skipping 469 matching lines @@
     AccessorConstantDescriptor d(Handle<Name>(Name::cast(prototype->name())),
                                  prototype, ro_attribs);
     map->AppendDescriptor(&d);
   }
 }
 
 
 Handle<Map> Genesis::CreateSloppyFunctionMap(FunctionMode function_mode) {
   Handle<Map> map = factory()->NewMap(JS_FUNCTION_TYPE, JSFunction::kSize);
   SetFunctionInstanceDescriptor(map, function_mode);
-  map->set_function_with_prototype(IsFunctionModeWithPrototype(function_mode));
+  map->set_is_constructor(IsFunctionModeWithPrototype(function_mode));
   map->set_is_callable();
   return map;
 }
 
 
 Handle<JSFunction> Genesis::CreateEmptyFunction(Isolate* isolate) {
   // Allocate the map for function instances. Maps are allocated first and their
   // prototypes patched later, once empty function is created.
 
   // Functions with this map will not have a 'prototype' property, and
@@ skipping 219 matching lines @@
         Builtins::kRestrictedStrictArgumentsPropertiesThrower);
   }
   return strict_poison_function_;
 }
 
 
 Handle<Map> Genesis::CreateStrictFunctionMap(
     FunctionMode function_mode, Handle<JSFunction> empty_function) {
   Handle<Map> map = factory()->NewMap(JS_FUNCTION_TYPE, JSFunction::kSize);
   SetStrictFunctionInstanceDescriptor(map, function_mode);
-  map->set_function_with_prototype(IsFunctionModeWithPrototype(function_mode));
+  map->set_is_constructor(IsFunctionModeWithPrototype(function_mode));
   map->set_is_callable();
   Map::SetPrototype(map, empty_function);
   return map;
 }
 
 
 Handle<Map> Genesis::CreateStrongFunctionMap(
     Handle<JSFunction> empty_function, bool is_constructor) {
   Handle<Map> map = factory()->NewMap(JS_FUNCTION_TYPE, JSFunction::kSize);
   SetStrongFunctionInstanceDescriptor(map);
-  map->set_function_with_prototype(is_constructor);
+  map->set_is_constructor(is_constructor);
   Map::SetPrototype(map, empty_function);
   map->set_is_callable();
   map->set_is_extensible(is_constructor);
   map->set_is_strong();
   return map;
 }
 
 
 void Genesis::CreateStrictModeFunctionMaps(Handle<JSFunction> empty) {
   // Allocate map for the prototype-less strict mode instances.
@@ skipping 614 matching lines @@
                        DONT_ENUM, Representation::Tagged());
       map->AppendDescriptor(&d);
     }
     {  // callee
       DataDescriptor d(factory->callee_string(), Heap::kArgumentsCalleeIndex,
                        DONT_ENUM, Representation::Tagged());
       map->AppendDescriptor(&d);
     }
     // @@iterator method is added later.
 
-    map->set_function_with_prototype(true);
     map->SetInObjectProperties(2);
     native_context()->set_sloppy_arguments_map(*map);
 
     DCHECK(!function->has_initial_map());
     JSFunction::SetInitialMap(function, map,
                               isolate->initial_object_prototype());
 
     DCHECK(map->GetInObjectProperties() > Heap::kArgumentsCalleeIndex);
     DCHECK(map->GetInObjectProperties() > Heap::kArgumentsLengthIndex);
     DCHECK(!map->is_dictionary_map());
@@ skipping 45 matching lines @@
                                    attributes);
       map->AppendDescriptor(&d);
     }
     {  // caller
       AccessorConstantDescriptor d(factory->caller_string(), caller,
                                    attributes);
       map->AppendDescriptor(&d);
     }
     // @@iterator method is added later.
 
-    map->set_function_with_prototype(true);
     DCHECK_EQ(native_context()->object_function()->prototype(),
               *isolate->initial_object_prototype());
     Map::SetPrototype(map, isolate->initial_object_prototype());
     map->SetInObjectProperties(1);
 
     // Copy constructor from the sloppy arguments boilerplate.
     map->SetConstructor(
         native_context()->sloppy_arguments_map()->GetConstructor());
 
     native_context()->set_strict_arguments_map(*map);
@@ skipping 1813 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8