[PATCH] D63216: [AMDGPU] ImmArg and SourceOfDivergence for permlane/dpp

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

Needs tests in test/Analysis/DivergenceAnalysis, and test/Verifier/AMDGPU/intrinsic-immarg.ll



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Comment at: lib/Target/AMDGPU/AMDGPUSearchableTables.td:102-104
+def : SourceOfDivergence<int_amdgcn_mov_dpp>;
+def : SourceOfDivergence<int_amdgcn_mov_dpp8>;
+def : SourceOfDivergence<int_amdgcn_update_dpp>;
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I'm not 100% sure on DPP. If it's called with uniform arguments, even though you read from another lane, every lane should read the same value? Is this not the case with some of the source types?


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https://reviews.llvm.org/D63216