Load original SourceRanges on import (#22180)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/22180
ghimport-source-id: efa46dcb845c099f0a746f523901ab2c2cd3b004
Test Plan: Imported from OSS
Differential Revision: D15981425
Pulled By: jamesr66a
fbshipit-source-id: bef682bd13c1a5be95bdb97e025690c6f2d523d3
