Introduce a special kind of frames for construct frames, e.g....

src/builtins.cc

 // Copyright 2006-2008 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 76 matching lines @@
 
 
 // TODO(1238487): Get rid of this function that determines if the
 // builtin is called as a constructor. This may be a somewhat slow
 // operation due to the stack frame iteration.
 static inline bool CalledAsConstructor() {
   StackFrameIterator it;
   ASSERT(it.frame()->is_exit());
   it.Advance();
   StackFrame* frame = it.frame();
-  return frame->is_internal() &&
-      InternalFrame::cast(frame)->is_construct_trampoline();
+  return frame->is_construct();
 }
 
 
 // ----------------------------------------------------------------------------
 
 
-int Builtins::construct_call_pc_offset_ = 0;
-int Builtins::arguments_adaptor_call_pc_offset_ = 0;
-
-
-// Check if the builtin was called in a 'new' call.
-bool Builtins::IsConstructCall(Address pc) {
-  ASSERT(construct_call_pc_offset_ > 0);
-  int offset = pc - builtin(JSConstructCall)->address();
-  return offset == construct_call_pc_offset_;
-}
-
-
-bool Builtins::IsArgumentsAdaptorCall(Address pc) {
-  ASSERT(arguments_adaptor_call_pc_offset_ > 0);
-  int offset = pc - builtin(ArgumentsAdaptorTrampoline)->address();
-  return offset == arguments_adaptor_call_pc_offset_;
-}
-
-
 Handle<Code> Builtins::GetCode(JavaScript id, bool* resolved) {
   Code* code = Builtins::builtin(Builtins::Illegal);
   *resolved = false;
 
   if (Top::security_context() != NULL) {
     Object* object = Top::security_context_builtins()->javascript_builtin(id);
     if (object->IsJSFunction()) {
       Handle<JSFunction> function(JSFunction::cast(object));
       // Make sure the number of parameters match the formal parameter count.
       ASSERT(function->shared()->formal_parameter_count() ==
@@ skipping 592 matching lines @@
       if (entry->contains(pc)) {
         return names_[i];
       }
     }
   }
   return NULL;
 }
 
 
 } }  // namespace v8::internal