heliqi removed a comment on issue #4969: [RFC] Enhance TensorFlow Frontend Control Flow Support URL: https://github.com/apache/incubator-tvm/issues/4969#issuecomment-607026858 Have you try the nlp model? I use latest code, dynamic sahpe don't working. recursively find the input to the control flow nodes , have some problems with fixed dynamic input. For example, I set the 'Placeholder' op(the original shape is dynamic (-1,-1)) shape as (1,30) in the from_tensorflow interface.First, for each control flow node, we backtrack all its ancestor nodes until input nodes.But all the nodes we first backtracked do not necessarily contain 'Placeholder' node, then the shape of these nodes is dynamic.until some control node search for and get the 'Placeholder' node.
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