[PATCH] D98888: [AMDGPU] SIOptimizeExecMaskingPreRA should check constant bus constraint when folds EXEC copy

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


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Comment at: llvm/test/CodeGen/AMDGPU/opt_exec_copy_fold.mir:16
+    %2:vreg_64 = COPY $exec
+    %3:sreg_64 = V_CMP_EQ_U64_e64 %1, %2, implicit $exec
+    $scc = COPY %3
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Is exec + implicit exec + other SGPR really a constant bus violation?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D98888/new/

https://reviews.llvm.org/D98888