[C++ API] AdaptiveLogSoftmaxWithLoss (#29076)
Summary:
Implemented AdaptiveLogSoftmaxWithLoss and some tests for modules. Reference https://github.com/pytorch/pytorch/issues/25883
Pull Request resolved: https://github.com/pytorch/pytorch/pull/29076
Differential Revision: D20404588
Pulled By: yf225
fbshipit-source-id: edbadf432b8173cbcc6caf83c9c03dd92dc31a37
