ATen DerivedType is dead, long live ATen RegisterDispatchKey (#47011)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/47011
smessmer has complained about how it is difficult to find generated
code. Well hopefully this diffs helps a bit with that.
There are three components to this refactor:
- Rename TypeDerived (CPUType) to RegisterDispatchKey (RegisterCPU).
The 'Type' nomenclature is vestigial and I think Register says
what these files do a lot more clearly. I also got rid of
the CPUType namespace; everything just goes in anonymous
namespace now, less moving parts this way.
- Give Math and DefaultBackend their own files (RegisterMath and
RegisterDefaultBackend)
- Restructure code generation so that schema definition is done
completely separately from RegisterDispatchKey
I decided to name the files RegisterCPU rather than the old convention
BackendSelectRegister, because it seems better to me if these
files clump together in an alphabetical listing rather than being
spread out everywhere. There are a few manual registration files
which should probably get similar renaming.
I also did a little garden cleaning about how we identify if a
dispatch key is a cuda key or a generic key (previously called
KEYWORD_ALL_BACKENDS but I like my naming better).
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Differential Revision: D24600806
Test Plan: Imported from OSS
Reviewed By: smessmer
Pulled By: ezyang
fbshipit-source-id: c1b510dd7515bd95e3ad25b8edf961b2fb30a25a
