pytorch

aaffcfe9 - implement "xy" indexing for torch.meshgrid (#62724)

implement "xy" indexing for torch.meshgrid (#62724) Summary: This is step 4/7 of https://github.com/pytorch/pytorch/issues/50276. This allows the use of `"xy"` indexing but doesn't change any defaults. Pull Request resolved: https://github.com/pytorch/pytorch/pull/62724 Reviewed By: heitorschueroff Differential Revision: D30995290 Pulled By: dagitses fbshipit-source-id: 08a6a6144b20bc019f68bc3c52e3bbf967976d8f