pytorch

07e98d28 - [pytorch][codegen] migrate gen_variable_factories.py to the new data model (#47818)

[pytorch][codegen] migrate gen_variable_factories.py to the new data model (#47818) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/47818 This is another relatively small codegen. Ideally we should CppSignature.decl() to generate the c++ function declaration. We didn't because it needs to add 'at::' to the types defined in ATen namespace. E.g.: - standard declaration: ``` Tensor eye(int64_t n, int64_t m, const TensorOptions & options={}) ``` - expected: ``` at::Tensor eye(int64_t n, int64_t m, const at::TensorOptions & options = {}) ``` Kept the hacky fully_qualified_type() method to keep compatibility with old codegen. We could clean up by: - Using these types in torch namespace - but this is a user facing header file, not sure if it will cause problem; - Update cpp.argument_type() method to take optional namespace argument; Confirmed byte-for-byte compatible with the old codegen: ``` Run it before and after this PR: .jenkins/pytorch/codegen-test.sh <baseline_output_dir> .jenkins/pytorch/codegen-test.sh <test_output_dir> Then run diff to compare the generated files: diff -Naur <baseline_output_dir> <test_output_dir> ``` Test Plan: Imported from OSS Reviewed By: bhosmer Differential Revision: D24909478 Pulled By: ljk53 fbshipit-source-id: a0ceaa60cc765c526908fee39f151cd7ed5ec923