What does InferBound do in tvm source code?

Questions
#1

I am studying the implementation of Schedule in TVM. I come across two concepts “Range” and “IterVar”. Can anyone tell me what “Range” and “IterVar” mean in computation graph, and what does InferBound do in tvm? many thanks

#2

IterVar refers to the iteration variable of an axis (aka For loop). An IterVar maps to a Range which contains the starting integer of the For loop and the extent (aka number of iterations).

There’s a detailed write up of InferBound https://docs.tvm.ai/dev/inferbound.html

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