Update aliasing in tensorexpr fuser (#43743)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/43743
Test Plan: Imported from OSS
Reviewed By: Krovatkin
Differential Revision: D23385205
Pulled By: eellison
fbshipit-source-id: 097a15d5bcf216453e1dd144d6117108b3deae4d
