tqchen edited a comment on pull request #7108:
URL: https://github.com/apache/tvm/pull/7108#issuecomment-744864004


   Thanks @tkonolige . First of all, I think it is very useful to be able to 
support additional meta data like names when the user can provid eit.
   
   On the other hand, attaching a String that defaults to a concrete value 
would mean additional overhead for PackedFunc creation, and may be prohibitive 
if we want to create PackedFunc on the fly(with a goal to gain std::function 
level speed).
   
   It would be good put more thoughts into this and think about how to improve  
the impl in general. As a first step, it certainly does not hurt to make the 
name Optional and default to nullptr, which reduces the string construction 
cost. 
   
   We can alternatively think about the future path of bringing in PackedFunc 
as a sub-class of Object, and potentially sub-class PackedFunc. So the default 
one remains un-named, while there is a named subclass.
   
   Finally, it would be great to discuss the API itself, for example, set_name 
is a mutable API, while in most cases we would prefer things to be immutable.
   
   Given it is quite a core change, an RFC would be great.
   


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