} else if (VecInT.getSizeInBits() == VT.getSizeInBits() * 2) {
// If the input vector is too large, try to split it.
// We don't support having two input vectors that are too large.
- if (VecIn2.getNode())
+ // If the zero vector was used, we can not split the vector,
+ // since we'd need 3 inputs.
+ if (UsesZeroVector || VecIn2.getNode())
return SDValue();
if (!TLI.isExtractSubvectorCheap(VT, VT.getVectorNumElements()))
DAG.getConstant(VT.getVectorNumElements(), TLI.getVectorIdxTy()));
VecIn1 = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, VT, VecIn1,
DAG.getConstant(0, TLI.getVectorIdxTy()));
- UsesZeroVector = false;
} else
return SDValue();
}