[PATCH] D124385: AMDGPU: Special case divergence analysis for wave ID computation

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added a comment.

Description speaks about 1D, while code targets multidimensional grids. In fact for 1D you would not need a wg to be uniform, it is only needed for 2D and 3D.



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Comment at: llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp:943
+  return match(PtrBase, m_Intrinsic<Intrinsic::amdgcn_dispatch_ptr>()) &&
+         Offset == 4 + 2 * GroupIdx;
+}
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Can this constant be defined somewhere?


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  https://reviews.llvm.org/D124385/new/

https://reviews.llvm.org/D124385