fix bugs to enable key_value cache for generation #36
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The
prepare_inputs_for_generation()method is used at each decoding step for auto-regressive generation. The default name for the keyword argument of key-value caches ispast_key_valuesinstead ofpast. Renamingpasttopast_key_valuesfits the Huggingface Transformer interface and enables the key-value cache for the generation.Please refer to https://github.com/huggingface/transformers/blob/main/src/transformers/generation/utils.py#L751.