[Openmp-commits] [PATCH] D130030: [OpenMP][DeviceRTL] Use `__atomic_exchange_n` to implement atomicStore

[Shilei Tian via Phabricator via Openmp-commits]

tianshilei1992 planned changes to this revision.
tianshilei1992 added a comment.

In D130030#3660553 <https://reviews.llvm.org/D130030#3660553>, @jdoerfert wrote:

> LG, though the backend should be able to handle this, IMHO

Yeah, `__atomic_exchange_n` is expanded based on the ordering, and one of the expansion is still atomic store, which goes back to current situation. `atomic::store` is only being used by AMDGPU to implement named barrier. I'm wondering if we want to drop `atomic::store` and use the `__atomic_store_n` wherever it needs?


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