Fix torch.triu / torch.tril on contiguous tensors with non-default st… (#22730)
Summary:
…rides
Changelog:
- Fix behavior of `torch.triu` / `torch.tril` on certain unsqueezed tensors that lead to uninitialized values on CPU
Pull Request resolved: https://github.com/pytorch/pytorch/pull/22730
Test Plan:
- Add tests for these cases in test_triu_tril in test_torch
Fixes https://github.com/pytorch/pytorch/issues/22581
Differential Revision: D16222897
Pulled By: zou3519
fbshipit-source-id: b86b060187797e5cd2a7731421dff1ba2b5c9596
