Rename AT_ASSERT to TORCH_INTERNAL_ASSERT; other macro updates (#20321)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20321
First part of https://github.com/pytorch/pytorch/issues/20287
- Rename `AT_ASSERT` to `TORCH_INTERNAL_ASSERT`
- Make `TORCH_INTERNAL_ASSERT` work with variadic inputs
- Deprecated `AT_ASSERT` and `AT_ASSERTM`
- Rename `AT_CHECK` to `TORCH_CHECK`
- Make `TORCH_CHECK` give a better error message when no arguments are
provided
- Deprecate `AT_ERROR` in favor of `TORCH_CHECK(false, ...)`
- Deprecate `AT_INDEX_ERROR` in favor of `TORCH_CHECK_INDEX(false, ...)`
- Rename `AT_WARN` to `TORCH_WARN`
No use sites are changed; I'll work on that in follow up patches
(or disable the deprecation, if necessary.)
Differential Revision: D15278439
fbshipit-source-id: 7e0ed489d4e89e5f56b8ad7eafa72cb9a06065ee
