Allow generic containers as module inputs (#16482)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/16326
Previously we didn't handle module inputs which included Generic Lists. When checking whether a generic list if a subvalue of the input arg type, I currently recurse on every element of the list. This shouldn't be too slow since the innermost list will be specialized and we won't have to check it's elements.
E.g. Tensor[][] -> GenericList [TensorList ].
The error message could be improved, but extracting the complete type of nested lists would have to deal with unifying types across lists / empty lists & typevars so I'm going to save that for a follow up PR.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/16482
Differential Revision: D13882582
Pulled By: eellison
fbshipit-source-id: 3609bc572f0ee9ebf20a77ea5ebc8fa3b165e24b
