pytorch

c1879b57 - [PyTorch] Use .sizes() instead of .size() in _cat_out_cpu (#49368)

[PyTorch] Use .sizes() instead of .size() in _cat_out_cpu (#49368) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/49368 The former is faster because it doesn't allow negative indexing (which we don't use). ghstack-source-id: 118624598 Test Plan: internal benchmark Reviewed By: hlu1 Differential Revision: D25545777 fbshipit-source-id: b2714fac95c801fd735fac25b238b4a79b012993