Can you please support Split and Slice as well?

[daweili1226]

I mean our tensorflow frontend now doesn't support Gather now.

I see "take" operator is added to tvm already and nnvm operator for the same is pending.
We could use this to support Gather.

Originally posted by @srkreddy1238 in #1188 (comment)

[daweili1226]

Traceback (most recent call last):
File "x.py", line 125, in
sym, params = nnvm.frontend.from_tensorflow(graph_def, layout=layout)
File "/homed/lidw/tvm/nnvm/python/nnvm/frontend/tensorflow.py", line 1411, in from_tensorflow
sym, params = g.from_tensorflow(graph, layout)
File "/homed/lidw/tvm/nnvm/python/nnvm/frontend/tensorflow.py", line 1096, in from_tensorflow
"The following operators are not implemented: {}".format(missing_operators))
NotImplementedError: The following operators are not implemented: set([u'Slice', u'Split'])