[PATCH] D157437: AMDGPU: Expand remaining system atomic operations

[Yaxun Liu via Phabricator via llvm-commits]

yaxunl added a comment.

In D157437#4614101 <https://reviews.llvm.org/D157437#4614101>, @arsenm wrote:

> ping, I think we just need to go with this and add in the new thing later. Also would like clarification on whether add/xchg at system scope are supposed to work

This will cause perf regression for XGMI users. We cannot afford that.

Maybe add another option -amdgpu-safe-pcie-atomics to enable the new changes (default off).


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https://reviews.llvm.org/D157437