[PyTorch][easy] Avoid allocating OperatorName strings in append_operator (#66134)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66134
No reason to do the comparison the old way when we could do it this way and avoid copying into std::string.
ghstack-source-id: 142065423
Test Plan: AIBench Milan run shows neutral to slight regression, but I think we should probably just make this change anyway.
Reviewed By: dhruvbird
Differential Revision: D31319669
fbshipit-source-id: dde329a4f2c4054f275eb98fb6556f5341e7533a
