yongwww commented on a change in pull request #4372: [Relay][Frontend][TF] Fix 
slice when begin or size is not Const
URL: https://github.com/apache/incubator-tvm/pull/4372#discussion_r348083252
 
 

 ##########
 File path: python/tvm/relay/frontend/tensorflow.py
 ##########
 @@ -626,8 +626,14 @@ def _impl(inputs, attr, params):
 
 def _slice():
     def _impl(inputs, attr, params):
-        begin = _get_list_param(params, inputs[1])
-        size = _get_list_param(params, inputs[2])
+        try:
+            begin = _get_list_param(params, inputs[1])
+        except:
+            begin = _infer_value_simulated(inputs[1], params).asnumpy()[0]
 
 Review comment:
   it might be `begin = _infer_value(inputs[1], params).asnumpy().tolist()`. 

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