Add benchmark for performance comparison (#43221)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/43221
Test Plan: Example: https://www.internalfb.com/intern/paste/P139226521/
Reviewed By: kimishpatel
Differential Revision: D23197567
Pulled By: kimishpatel
fbshipit-source-id: 7d0f8e653c62f0bee5795618e712d07effbd460a
