[PATCH] D151341: AMDGPU: Special case uniformity info for single lane workgroups

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


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Comment at: llvm/test/Analysis/UniformityAnalysis/AMDGPU/workitem-intrinsics.ll:44-50
+; CHECK-LABEL: UniformityInfo for function 'workitem_id_x_singlethreaded':
+; CHECK-NOT: DIVERGENT
+define amdgpu_kernel void @workitem_id_x_singlethreaded() #2 {
+  %id.x = call i32 @llvm.amdgcn.workitem.id.x()
+  store volatile i32 %id.x, ptr addrspace(1) undef
+  ret void
+}
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yassingh wrote:
> Same as above, equivalent GMIR test?
Can't test MIR as-is, the TTI based machine uniformity query is broken as mentioned in the last patch


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D151341/new/

https://reviews.llvm.org/D151341