pytorch

fa184c35 - [JIT][to-backend] Fix compilation unit and name mangling of generated module (#38679)

[JIT][to-backend] Fix compilation unit and name mangling of generated module (#38679) Summary: **Summary** This commit gets rid of the separate compilation unit that is currently being created for every backend-specific module generated by `jit::backend::generateToBackendFn` and mangles the name properly to allow multiple backend-specific modules to coexist in the same compilation unit. **Test Plan** `python test/test_jit.py TestBackends` **Fixes** This pull request fixes part of https://github.com/pytorch/pytorch/issues/37841. Pull Request resolved: https://github.com/pytorch/pytorch/pull/38679 Differential Revision: D21744620 Pulled By: SplitInfinity fbshipit-source-id: ac85b8ce0d179c057991e9299fd53a4e13ba02a9