Is it possible to do a deep copy of Relay expression in C++?
atm we don’t have a util to do so but can be implemented via a Functor. However, given that most of the nodes are immutable, it is not necessary to do a deep copy
I was having some issues with CallNode attrs which is mutable.
As far as i understand the attrs of CallNode should not be mutable, so perhaps we can double check what was going on in our logic and fix that instead
Very possible. I will look at it again. I was hacking around and was not using right SW practices 
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