[regexp] Port RegExp.prototype.exec to TurboFan

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 2852e8f4152d9665d9d2eda137f2e12e6b7dff40..d31c7d9c6ff07cc641c9b60fa44766a1bb411df1 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1663,6 +1663,19 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
     initial_map->set_unused_property_fields(0);
     initial_map->set_instance_size(initial_map->instance_size() +
                                    num_fields * kPointerSize);
+
+    {
+      // RegExp.prototype setup.
+
+      Handle<JSObject> proto =
+          factory->NewJSObject(isolate->object_function(), TENURED);
+      JSObject::AddProperty(proto, factory->constructor_string(), regexp_fun,
+                            DONT_ENUM);
+      Accessors::FunctionSetPrototype(regexp_fun, proto).Assert();

[Igor Sheludko, 2016/09/29 12:55:28]

I think you can pass the right prototype object to InstallFunction that it
creates regexp_fun. See Date initialization for example.

[jgruber, 2016/09/29 14:40:26]

Done.

+
+      SimpleInstallFunction(proto, "exec", Builtins::kRegExpPrototypeExec, 1,
+                            true, DONT_ENUM);
+    }
   }
 
   {  // -- E r r o r