Tutorial / example script for RNNs with LSTM cells

I wonder if there are some tutorials / example scripts available for feeding RNNs with LSTM cells from pytorch or ONNX to TVM and to compile them with auto-tuning or auto-scheduling.

At the moment, I am not even sure in how far LSTMs are supported by TVM and if it is worth the effort to spend much time in trying to get it to work. Maybe someone could provide an overview what is currently supported by TVM. If this information / documentation already exists, I would appreciate it a lot, if someone could post the respective links.