ES6: Desugaring of instanceof to support @@hasInstance

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 16b0e1faf4ac76710f5362dd75335d2bca066b3d..b5944857bf6231ec610db3b87cd404441a0e1c1a 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1161,6 +1161,9 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
     // Set the length for the function to satisfy ECMA-262.
     has_instance->shared()->set_length(1);
 
+    // Install in the native context
+    native_context()->set_ordinary_has_instance(*has_instance);
+
     // Install the "constructor" property on the %FunctionPrototype%.
     JSObject::AddProperty(prototype, factory->constructor_string(),
                           function_fun, DONT_ENUM);
@@ -2489,6 +2492,10 @@ void Genesis::InitializeGlobal_harmony_object_own_property_descriptors() {
                         Builtins::kObjectGetOwnPropertyDescriptors, 1, false);
 }
 
+void Genesis::InitializeGlobal_harmony_instanceof() {

[rossberg, 2016/02/12 14:11:31]

Use the EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE macro, see lines 2324+

[mvstanton, 2016/02/18 02:12:17]

Done.

+  if (!FLAG_harmony_instanceof) return;
+}
+
 void Genesis::InstallJSProxyMaps() {
   // Allocate the different maps for all Proxy types.
   // Next to the default proxy, we need maps indicating callable and
@@ -2976,6 +2983,7 @@ bool Genesis::InstallExperimentalNatives() {
   static const char* harmony_do_expressions_natives[] = {nullptr};
   static const char* harmony_regexp_subclass_natives[] = {nullptr};
   static const char* harmony_regexp_lookbehind_natives[] = {nullptr};
+  static const char* harmony_instanceof_natives[] = {nullptr};
   static const char* harmony_regexp_property_natives[] = {nullptr};
   static const char* harmony_function_name_natives[] = {nullptr};
   static const char* harmony_function_sent_natives[] = {nullptr};