How to verify that default_decompositions successfully reduce operators to the Core ATen IR set?

torch.compile FX (Functional Transformations)
1

Is there a way to test if all ops in default_decompositions can be fully decomposed into the Core ATen IR (~180 ops) using ep.run_decompositions, as specified in the Export IR documentation (https://docs.pytorch.org/docs/stable/export.html#export-ir-decompositions)?