migrate export_caffe2_op_to_c10.h macros to the new dispatcher registration API, update code_analyzer regex (#48308)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/48308
The original regex that I added didn't correctly match namespaces that started with an underscore (e.g. `_test`), which caused a master-only test to fail.
The only change from the previous commit is that I updated the regex like so:
before: `^.*TORCH_LIBRARY_IMPL_init_([^_]+)_([^_]+)_[0-9]+(\(.*)?$`
after: `^.*TORCH_LIBRARY_IMPL_init_([_]*[^_]+)_([^_]+)_[0-9]+(\(.*)?$`
I added in a `[_]*` to the beginning of the namespace capture. I did the same for the `_FRAGMENT` regex.
Verified that running `ANALYZE_TEST=1 tools/code_analyzer/build.sh` (as the master-only test does) produces no diff in the output.
Fixing regex pattern to allow for underscores at the beginning of the
namespace
This reverts commit 3c936ecd3c68f395dad01f42935f20ed8068da02.
Test Plan: Imported from OSS
Reviewed By: ezyang
Differential Revision: D25123295
Pulled By: bdhirsh
fbshipit-source-id: 54bd1e3f0c8e28145e736142ad62a18806bb9672
