pytorch

08b431f5 - Add trace_backward, masked_select_backward, and take_backward as ops (#44408)

Add trace_backward, masked_select_backward, and take_backward as ops (#44408) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/44408 See #44052 for context. Test Plan: - `pytest test/test_autograd.py -v` Reviewed By: mrshenli Differential Revision: D23605504 Pulled By: zou3519 fbshipit-source-id: b9b1646d13caa6e536d08669c29bfc2ad8ff89a3