[PATCH] D115559: AMDGPU: Propagate amdgpu-waves-per-eu with attributor

[Joseph Huber via Phabricator via llvm-commits]

jhuber6 added a comment.

In D115559#4407258 <https://reviews.llvm.org/D115559#4407258>, @arsenm wrote:

> In D115559#4396025 <https://reviews.llvm.org/D115559#4396025>, @jhuber6 wrote:
>
>> There is actually an assumption propagation AA in the Attributor already https://github.com/llvm/llvm-project/blob/main/llvm/lib/Transforms/IPO/AttributorAttributes.cpp#L11609. I don't know if that's relevant to what the AMDGPUAttributor wants to do however.
>
> Don't see how assumes are involved. There isn't a way to introspect waves-per-eu

I was just wondering out loud if you could model this as "assume one thread" and then treat it the same way in the backend.


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