pytorch

8bdda03a - optimize RNN on CPU (#22512)

optimize RNN on CPU (#22512) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/22512 optimize RNN on CPU Reviewed By: llyfacebook Differential Revision: D16113360 fbshipit-source-id: 9ee53b3b4bb9b636e7be1ccdf25420e2caa60762