Adapt hydrogen-based Array constructor to also support InternalArray and function call

src/bootstrapper.cc

 // Copyright 2012 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 1588 matching lines @@
                       name,
                       JS_ARRAY_TYPE,
                       JSArray::kSize,
                       isolate()->initial_object_prototype(),
                       Builtins::kInternalArrayCode,
                       true, true);
   Handle<JSObject> prototype =
       factory()->NewJSObject(isolate()->object_function(), TENURED);
   SetPrototype(array_function, prototype);
 
-  array_function->shared()->set_construct_stub(
-      isolate()->builtins()->builtin(Builtins::kCommonArrayConstructCode));
+  if (FLAG_optimize_constructed_arrays) {
+    InternalArrayConstructorStub internal_array_constructor_stub(isolate());
+    Handle<Code> code = internal_array_constructor_stub.GetCode(isolate());
+    array_function->shared()->set_construct_stub(*code);
+  } else {
+    array_function->shared()->set_construct_stub(
+        isolate()->builtins()->builtin(Builtins::kCommonArrayConstructCode));
+  }
 
   array_function->shared()->DontAdaptArguments();
 
   Handle<Map> original_map(array_function->initial_map());
   Handle<Map> initial_map = factory()->CopyMap(original_map);
   initial_map->set_elements_kind(elements_kind);
   array_function->set_initial_map(*initial_map);
 
   // Make "length" magic on instances.
   Handle<DescriptorArray> array_descriptors(
@@ skipping 1006 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   ASSERT(!IsActive());
 }
 
 } }  // namespace v8::internal