Index into a tuple with non constant integer (#20081)
Summary:
Fix for https://github.com/pytorch/pytorch/issues/16962
This needs fixing because we turn lists into tuples when constantify a module, so indexing into a Tuple of one type with a non-constant integer is quite common.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20081
Differential Revision: D15205893
Pulled By: eellison
fbshipit-source-id: 61d74ee071ad0aad98e46fe807d6f6cc5f6abd2f
