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DAG: Use poison when splitting vector_shuffle results (#168176)

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Matt Arsenault
2025-11-19 12:27:08 -05:00
committed by GitHub
parent e9b11ae837
commit 0b921f52cc
1 changed files with 1 additions and 1 deletions
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2
llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
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@@ -2922,7 +2922,7 @@ void DAGTypeLegalizer::SplitVecRes_VECTOR_SHUFFLE(ShuffleVectorSDNode *N,
Input2->getOpcode() == ISD::BUILD_VECTOR &&
"Expected build vector node.");
EVT EltVT = NewVT.getVectorElementType();
SmallVector<SDValue> Ops(NewElts, DAG.getUNDEF(EltVT));
SmallVector<SDValue> Ops(NewElts, DAG.getPOISON(EltVT));
for (unsigned I = 0; I < NewElts; ++I) {
if (Mask[I] == PoisonMaskElem)
continue;