Allow functions to have custom construct stubs that are called...

src/x64/builtins-x64.cc

 // Copyright 2009 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 153 matching lines @@
 }
 
 void Builtins::Generate_FunctionCall(MacroAssembler* masm) {
   masm->int3();  // UNIMPLEMENTED.
 }
 
 void Builtins::Generate_JSConstructCall(MacroAssembler* masm) {
   masm->int3();  // UNIMPLEMENTED.
 }
 
+void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) {
+  masm->int3();  // UNIMPLEMENTED.
+}
+
 static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm,
                                              bool is_construct) {
   // Expects five C++ function parameters.
   // - Address entry (ignored)
   // - JSFunction* function (
   // - Object* receiver
   // - int argc
   // - Object*** argv
   // (see Handle::Invoke in execution.cc).
 
@@ skipping 102 matching lines @@
 void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) {
   Generate_JSEntryTrampolineHelper(masm, false);
 }
 
 
 void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) {
   Generate_JSEntryTrampolineHelper(masm, true);
 }
 
 } }  // namespace v8::internal