Extend subgraph utils to cover merging a node following a subgraph (#52513)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/52513
Subgraph Utils previously only worked with merging a node into a subgraph if the node was before the subgraph; extend the logic for the case where the subgraph is first.
Test Plan: Imported from OSS
Reviewed By: navahgar
Differential Revision: D26696697
Pulled By: eellison
fbshipit-source-id: b0595b7d400161b0972321c55718b67103c7bbcd
