Migrate le/gt/ge/eq/ne from the TH to Aten. Added support of type promotion. (#26981)
Summary:
https://github.com/pytorch/pytorch/issues/24606 Migrate ne and ne_ from the TH to Aten (CUDA)
https://github.com/pytorch/pytorch/issues/24740 Migrate ne and ne_ from the TH to Aten (CPU)
https://github.com/pytorch/pytorch/issues/24573 Migrate gt and gt_ from the TH to Aten (CUDA)
https://github.com/pytorch/pytorch/issues/24709 Migrate gt and gt_ from the TH to Aten (CPU)
https://github.com/pytorch/pytorch/issues/24556 Migrate eq and eq_ from the TH to Aten (CUDA)
https://github.com/pytorch/pytorch/issues/24696 Migrate eq and eq_ from the TH to Aten (CPU)
https://github.com/pytorch/pytorch/issues/24568 Migrate ge and ge_ from the TH to Aten (CUDA)
https://github.com/pytorch/pytorch/issues/24703 Migrate ge and ge_ from the TH to Aten (CPU)
https://github.com/pytorch/pytorch/issues/24582 Migrate le and le_ from the TH to Aten (CUDA)
https://github.com/pytorch/pytorch/issues/24719 Migrate le and le_ from the TH to Aten (CPU)
Performance characteristics are similar to https://github.com/pytorch/pytorch/issues/25998
This PR migrates comparison ops from TH to ATen and adds type promotion in the same way as in https://github.com/pytorch/pytorch/issues/25998
Pull Request resolved: https://github.com/pytorch/pytorch/pull/26981
Differential Revision: D17635651
Pulled By: ifedan
fbshipit-source-id: 6ec7615207f5c248a6dd85fc54c25bd5e6d328e6
