Add support for generating faithful at::cpu signatures (#51499)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/51499
I'm going to turn on at::cpu signatures on for all operators; before
I do it I want to make sure I'm at feature parity everywhere.
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Test Plan: Imported from OSS
Reviewed By: bhosmer
Differential Revision: D26187855
Pulled By: ezyang
fbshipit-source-id: 8fdfd9d843fc98435b1f1df8b475d3184d87dc96
