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[DAGCombiner] When combining EXTRACT_SUBVECTOR of a BUILD_VECTOR, make sure we don't create a BUILD_VECTOR with an illegal type after type legalization.
llvm-svn: 312621
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@ -15180,8 +15180,9 @@ SDValue DAGCombiner::visitEXTRACT_SUBVECTOR(SDNode* N) {
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unsigned NumElems = ExtractSize / EltSize;
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EVT ExtractVT = EVT::getVectorVT(*DAG.getContext(),
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InVT.getVectorElementType(), NumElems);
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if (!LegalOperations ||
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TLI.isOperationLegal(ISD::BUILD_VECTOR, ExtractVT)) {
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if ((!LegalOperations ||
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TLI.isOperationLegal(ISD::BUILD_VECTOR, ExtractVT)) &&
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(!LegalTypes || TLI.isTypeLegal(ExtractVT))) {
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unsigned IdxVal = (Idx->getZExtValue() * NVT.getScalarSizeInBits()) /
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EltSize;
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