Extract feature length information from SigridTransforms op (#20384)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20384
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20171
Extract feature length information from SigridTransforms op
Reviewed By: ipiszy
Differential Revision: D15219408
fbshipit-source-id: 307d2b65b208d3af6977d90246d0372795c45815
