transformers

ccc7d90b - Prefill-related logic in input preparation for generation (#42088)

Prefill-related logic in input preparation for generation (#42088) * add prefill arg in generation * add a slow test * fix copies * can be like this but checking special tokens isn't good * ig this solves the issue with assisted_gen+prefill * update overwritten `prepare_inpits_for_generation` * prefill is actually when we have no cache at all.. Try this for now * first iteration is not always techincally same as prefill * fix? * fix now? * update bloom * fix smth * make style * fix copies and skip test * fix copies * tiny updates after a review * fix other slow tests * fix copies * do not pass the same kwargs twice in prefill * oops * have to revert? prob fails only on dgx * adjust slow test again * address comments * fix copies