Phi3
Author: xadupre
Pull request: yes

# What does this PR do?

Function ``_prepare_4d_causal_attention_mask_with_cache_position`` only uses ``sliding_window`` from the text config. This PR replaces config by sliding_window for better clarity. It is also necessary to make the model go through torch.export.export.


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Comments:
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Hi @xadupre, we normally prefer to pass config objects around than to extract attributes from them and pass them to submodules! Can you explain why `torch.export` fails with the current code? Is it the use of `get_text_config()`?