pytorch

16c166e2 - Add XLAPreAutograd key for XLA use cases that need custom autograd. (#32788)

Add XLAPreAutograd key for XLA use cases that need custom autograd. (#32788) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/32788 Signed-off-by: Edward Z. Yang <ezyang@fb.com> Test Plan: Imported from OSS Differential Revision: D19628643 Pulled By: ezyang fbshipit-source-id: 7099b08eff37913144b961dda00b070bd4b939d4