[llvm] [VPlan] Implement mayHaveSideEffects/mayWriteToMemory for VPInterleav… (PR #71360)

[Florian Hahn via llvm-commits]

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@@ -74,6 +74,10 @@ for.body14.i.i:                                   ; preds = %for.body14.i.i, %en
   %loadf = load float, ptr %arrayidx15.i.i1427, align 4
   %next19.i.i = getelementptr inbounds %struct.CvNode1D, ptr undef, i32 %i.1424.i.i, i32 1
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fhahn wrote:

While you are here, could you also replace the `undef` pointer operands here and elsewhere to make the test defined properly? The new stores are needed to avoid the loads being optimized away, which would be good to do separately.


https://github.com/llvm/llvm-project/pull/71360