add c2 benchmark runs in cpp (#20108)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20108
Add cpp runs for c2, hooked up via pybinds. Print output to terminal. This is not hooked up with the pep output yet because I'd like to verify the numbers first.
Note that this isn't quite the same mechanism as the pytorch cpp hookup, which uses cpp_python_extensions. If I can use the same mechanism to pull all the inputs for c2 through cpp and do FeedBlobs in cpp, then I'll switch to that.
Reviewed By: zheng-xq
Differential Revision: D15155976
fbshipit-source-id: 708079dacd3e19aacfe43d70c5e5bc54da2cf9e3
