Split anonymous and namespaced definitions in RegisterDispatchKey (#51585)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/51585
Some payoff from the stack of refactors. When I initially landed
at::cpu, Brian asked me why I couldn't just separate the anonymous
and namespaced definitions. Well, it used to be annoying. Now it's
not annoying anymore, so go ahead and split them up.
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Test Plan: Imported from OSS
Reviewed By: zou3519
Differential Revision: D26209873
Pulled By: ezyang
fbshipit-source-id: 63057d22acfaa0c17229947d9e65ec1193e360ec
