[PyTorch Edge][Model Loading] Operator Call De-dup at TorchScript Serialization Level [1/2] (#64268)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64268
If the same pair of operator name and num inputs have been used to add an instruction to the operator table previously (and the operator's schema is not vararg), use the same index as that instruction rather than creating a new one.
ghstack-source-id: 138014905
Test Plan: Phabricator tests, and test performance changes in next diff
Reviewed By: iseeyuan, tugsbayasgalan
Differential Revision: D30615434
fbshipit-source-id: f442f557f12412693a73004ce44733ccef063b82
