In Invoke get JSEntryStub and JSConstructEntryStub directly through roots.

src/execution.cc

Index: src/execution.cc
diff --git a/src/execution.cc b/src/execution.cc
index aa154df179b762863abbc7eaa973296d413772ed..c1cb04380475c416384e92c06cdc96dbaa2051ce 100644
--- a/src/execution.cc
+++ b/src/execution.cc
@@ -88,11 +88,9 @@ static Handle<Object> Invoke(bool construct,
 
   Handle<Code> code;
   if (construct) {
-    JSConstructEntryStub stub;
-    code = stub.GetCode();
+    code = isolate->factory()->js_construct_entry_code();
   } else {
-    JSEntryStub stub;
-    code = stub.GetCode();
+    code = isolate->factory()->js_entry_code();
   }
 
   // Convert calls on global objects to be calls on the global