Improvements for FX tracer (#52232)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/52232
Pull Request resolved: https://github.com/pytorch/glow/pull/5327
Reviewed By: gcatron
Differential Revision: D26355583
fbshipit-source-id: f062e0b3a9cadf1584738bed85e9964b9a63efaf
