[libc-commits] [libc] [libc] Implement 'atexit' on the GPU correctly (PR #83037)

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lntue wrote:

> > Can you split the GPU's `atexit` implementation to `src/stdlib/gpu/atexit.cpp` similar to `malloc` and `free` there? So that they won't have maybe-unused non-overlapping dependency.
> 
> Somewhat of a pain because it required adding some "generic/" directory only for a single file.

You don't need the `generic` folder for that.  I'm thinking more about putting `atexit` entry point creation under the switch https://github.com/llvm/llvm-project/blob/main/libc/src/stdlib/CMakeLists.txt#L400, where you simply alias it with the `.gpu.atexit` target when building for GPU.

https://github.com/llvm/llvm-project/pull/83037