pytorch

fd72ec53 - [JIT] Optimize hot path in ProfilingGraphExecutorImpl::getPlanFor. (#47465)

[JIT] Optimize hot path in ProfilingGraphExecutorImpl::getPlanFor. (#47465) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/47465 This results in a ~10% improvement on a DeepAndWide model: 10 runs of a benchmark before the change: ``` 1.480785621330142 1.430812582373619 1.3845220785588026 1.4510653037577868 1.4827174227684736 1.3679781593382359 1.4239587392657995 1.5069784726947546 1.3988622818142176 1.4533461946994066 ``` 10 runs of the same benchmark after the change: ``` 1.3221493270248175 1.3624659553170204 1.3415213637053967 1.3560577500611544 1.3064174111932516 1.2934542261064053 1.379274770617485 1.3850531745702028 1.26725466363132 1.3738237638026476 ``` Link to benchmark: https://gist.github.com/ZolotukhinM/2308732eabb47685c6f7786e5a13b3d1 Test Plan: Imported from OSS Reviewed By: eellison Differential Revision: D24767247 Pulled By: ZolotukhinM fbshipit-source-id: a77e89fdfb54286e6463533c86b3a4ba606ca1c7