pytorch

de902b5d - [FX] Add a default_value arg to Graph.placeholder and fix split_module (#71016)

[FX] Add a default_value arg to Graph.placeholder and fix split_module (#71016) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/71016 I found out that `split_module` doesn't preserve default values for arguments. In trying to fix that, I noticed that `Graph.placeholder` doesn't make it easy to add a default argument when making a placeholder. This PR addresses both of those issues Test Plan: Imported from OSS Reviewed By: ansley Differential Revision: D33482218 Pulled By: jamesr66a fbshipit-source-id: 57ebcdab25d267333fb1034994e08fc1bdb128ee