Where does Relay OP & TOPI OP connect?

Questions
#1

Hello! I have a question about Relay op & TOPI op. such as [conv] op,where does both op connect in TVM？I saw in python/tvm/relay/op/nn/_nn.py,this file only has other conv op,not just conv2d,can anyone help me?

#2

You can find the platform specific strategy here

You also register you OP via following the tutorial

https://tvm.apache.org/docs/arch/relay_op_strategy.html?highlight=strategy

#3

Thank you very much! I will study this two tutorials,thanks!