Is there any api to get fcompute function of a relay operator?

Questions
1

For example, I define a relay operator like this:

x = tvm.relay.Var(‘x’, tvm.relay.TensorType([1, 3, 16, 16]) y = tvm.relay.nn.relu(x)

Then, how can I get the fcompute function of y? I searched the Python API list and did not find that.