import tvm
import tvm.relay as relay

x = relay.var("x", shape=(16,), dtype='float32')
y = relay.var("y", shape=(16,), dtype='float32')
c = relay.Let(x, y, x)

f =  relay.Function([y], relay.expr.Tuple([c, c]))
mod = relay.Module.from_expr(f)
mod = relay.transform.PartialEvaluate()(mod)