Fix an invalid peephole transformation if input/output values are written to (#28455)
Summary:
fixes https://github.com/pytorch/pytorch/issues/28360
Pull Request resolved: https://github.com/pytorch/pytorch/pull/28455
Differential Revision: D19374601
Pulled By: Krovatkin
fbshipit-source-id: 622f24b40aba03e79e55a6b8d25d88417f7d8bad
