pytorch

a7ae73a2 - BUG Fixes regression for nllloss gradcheck (#64203)

BUG Fixes regression for nllloss gradcheck (#64203) Summary: Fixes https://github.com/pytorch/pytorch/issues/64163 This PR includes the fix and the opinfo from https://github.com/pytorch/pytorch/pull/63854/ for non-regression testing. cc albanD mruberry jbschlosser Pull Request resolved: https://github.com/pytorch/pytorch/pull/64203 Reviewed By: albanD Differential Revision: D30647522 Pulled By: jbschlosser fbshipit-source-id: 2974d299763505908fa93532aca2bd5d5b71f2e9