Bin Bao ed48ea9997 [AOTI] Refine the C shim autogen mechanism (#125589) ...

Summary: Based on the discussions in https://github.com/pytorch/pytorch/pull/120513. Instead of auto-generate C shim fallback ops for thousands of ops, we maintain a list of fallback ops based on torch/_inductor/lowering.py, and only generate C shim functions for those ops. At the torchgen time, we will re-generate C shim files and compare the header file contents against the existing C shim headers. If there is any change, the compilation will fail with prompt on how to proceed. This makes sure the ABI-compatible C shim layer is small enough to maintain in the long run.

Differential Revision: [D57004046](https://our.internmc.facebook.com/intern/diff/D57004046)

Pull Request resolved: https://github.com/pytorch/pytorch/pull/125589
Approved by: https://github.com/frank-wei, https://github.com/chenyang78, https://github.com/albanD, https://github.com/ezyang

2024-05-09 02:48:16 +00:00

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