HANDLE_TH_ERRORS: Move exception translation out of line (#69974)
Summary:
I've noticed that the `HANDLE_TH_ERRORS` macros are actually very expensive in terms of compile time. Moving the bulk of the catch statements out of line using a lippincott function significantly improves compile times and object file binary sizes. For just the generated autograd bindings, this halves serial build time from 8 minutes to 4 and binary size is more than halved for most files with the biggest difference being `python_variable_methods.cpp` which went from 126 MB to 43 MB.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/69974
Reviewed By: mruberry
Differential Revision: D33160899
Pulled By: albanD
fbshipit-source-id: fc35fa86f69ffe5a0752557be30b438c8564e998
