pytorch

3ab30753 - Make autogen functions correct for multiple outputs and views (#31990)

Make autogen functions correct for multiple outputs and views (#31990) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/31990 This PR does three things: - Add a new `allow_rebase_history` flag to the differentiable views. If set, trying to rebase their history will raise an error. - Make sure that the codegen functions verify this flag before doing inplace operations so that they fail before doing the inplace modification. - Make sure the codegen functions set this flag properly when we don't support rebasing the history of the output. The codegen change can be found [here](https://github.com/pytorch/pytorch/commit/4bf180caa0e655111b036c8b0419da89fc75671b). Test Plan: Imported from OSS Differential Revision: D19409649 Pulled By: albanD fbshipit-source-id: a2b41c2d231e952ecfe162bdb6bad620ac595703