pytorch

8f1445c4 - Add is_mkldnn to at::Tensor

Add is_mkldnn to at::Tensor Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/19633 Reviewed By: dzhulgakov Differential Revision: D15053320 fbshipit-source-id: 12b9f85a025a9e957e1b7b3014ba44ae71bfd7a5