6037   HeapObject* heap_obj = HeapObject::cast(obj);  in RUNTIME_FUNCTION()  local
6040   if (heap_obj->map()->is_undetectable()) {  in RUNTIME_FUNCTION()
6044   InstanceType instance_type = heap_obj->map()->instance_type();  in RUNTIME_FUNCTION()
6051       if (heap_obj->IsTrue() || heap_obj->IsFalse()) {  in RUNTIME_FUNCTION()
6054       if (heap_obj->IsNull()) {  in RUNTIME_FUNCTION()
6059       ASSERT(heap_obj->IsUndefined());  in RUNTIME_FUNCTION()
12942   HeapObject* heap_obj = NULL;  in DebugReferencedBy()  local
12943   while (((heap_obj = iterator->next()) != NULL) &&  in DebugReferencedBy()
12946     if (heap_obj->IsJSObject()) {  in DebugReferencedBy()
12949       JSObject* obj = JSObject::cast(heap_obj);  in DebugReferencedBy()
13073   HeapObject* heap_obj = NULL;  in DebugConstructedBy()  local
13074   while (((heap_obj = iterator->next()) != NULL) &&  in DebugConstructedBy()
13077     if (heap_obj->IsJSObject()) {  in DebugConstructedBy()
13078       JSObject* obj = JSObject::cast(heap_obj);  in DebugConstructedBy()