[turbofan] Properly optimize instanceof (even in the presence of @@hasInstance).

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index ab41f8899e3cba48c71195852f6a4d93a0c1814c..ba5f4d5c1dc499c10852bbb42f229a67dc155812 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1257,6 +1257,7 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
         JSObject::kHeaderSize, MaybeHandle<JSObject>(),
         Builtins::kFunctionPrototypeHasInstance,
         static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY));
+    has_instance->shared()->set_builtin_function_id(kFunctionHasInstance);
     native_context()->set_function_has_instance(*has_instance);
 
     // Set the expected parameters for @@hasInstance to 1; required by builtin.