print position of the operator that failed to onnxifi (#40232)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/40232
if an operator failed to onnxifi due to lack of support (not because of missing shapes), print out the position of such op, which can be used to feed net runner
Test Plan: I0618 09:25:06.299002 1570804 onnxifi_transformer.cc:1232] Don't support c2 op SparseLengthsSumFused4BitRowwise at pos 246 (1030)
Reviewed By: hl475
Differential Revision: D22120055
fbshipit-source-id: a3c68b93b7e38dfda5d70168e7541021a8e16dcb
