pytorch

78a00d72 - Revert D18899127: resubmit polish up overloads on free functions

Revert D18899127: resubmit polish up overloads on free functions Test Plan: revert-hammer Differential Revision: D18899127 Original commit changeset: 9049b8718926 fbshipit-source-id: c70a8aa4120aa757dce0926a8ab3cc5c92cd6041