[Relay][Frontend][Onnx] Add RNN operation for ONNX frontend#12213

Merged

AndrewZhaoLuo merged 6 commits intoapache:mainfrom

zhang-yi-chi:add-frontend-onnx-rnn

Aug 4, 2022

Commits on Jul 28, 2022

Add RNN operation for ONNX frontend.
张亦驰
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link checks
张亦驰
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Commits on Aug 2, 2022

rm test_rnn_batchwise in unsupported_onnx_tests
张亦驰
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merge similar codes to class methods
张亦驰
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implement opset 14 and refactor test_forward
张亦驰
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Commits on Aug 3, 2022

reformat verify_rnn_helper
张亦驰
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