pytorch

1589ede8 - [quant][graphmode][fx] insert_observer_for_input_arg_of_observed_node (#47785)

[quant][graphmode][fx] insert_observer_for_input_arg_of_observed_node (#47785) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/47785 Test Plan: Imported from OSS Reviewed By: vkuzo Differential Revision: D24900302 fbshipit-source-id: 61d6287c462898837aed85d5c3a48b6e47b4a41b