Generate derived extension backend Type classes for each scalar type (#17278)
Summary:
Previously we only generate one class for each extension backend. This caused issues with scalarType() calls and mapping from variable Types to non-variable types. With this change we generate one Type for each scalar type.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/17278
Reviewed By: ezyang
Differential Revision: D14161489
Pulled By: li-roy
fbshipit-source-id: 91e6a8f73d19a45946c43153ea1d7bc9d8fb2409
