[1/3] [JIT] Make sure fusion occurs in test_tensorexpr file (#45788)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/45788
We were only running the traced graph once, which would not yet have been fused at that point. We should run for num_profiled_runs + 1, and also assert that all nodes in the graph were fused.
Test Plan: Imported from OSS
Reviewed By: bertmaher
Differential Revision: D24169537
Pulled By: eellison
fbshipit-source-id: 8499bb1a5bd9d2221b1f1c54d6352558cf07ba9a
