[inductor] Minifier fixes (#87062)
Fixes https://github.com/pytorch/torchdynamo/issues/1690
This fixes the error seen in the minifiers. But does not repro the original issue that prompted the above issue.
Fx minifiers work at the level of Fx-graphs, and the original issue lies outside of the Fx graph and is only visible on the second iteration. Therefore, the original issue escapes the abstraction of our existing Fx-based minifiers.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/87062
Approved by: https://github.com/eellison
