[Relay] Global reduce fails to compile #2411

def test_relay_sum():
    ctx = tvm.cpu()
    target = tvm.target.create('llvm')
    shape = (3, 4)
    x = relay.var('x', shape=shape)
    y = relay.sum(x)
    func = relay.Function([x], y)
    x_data = np.random.rand(*shape).astype('float32')
    intrp = relay.create_executor("debug", ctx=ctx, target=target)
    ret = intrp.evaluate(func)(x_data)
    print(ret)