diff options
Diffstat (limited to 'llvm/lib/CodeGen')
-rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 7768d12c75c..ceb7e482603 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -15698,8 +15698,13 @@ SDValue DAGCombiner::visitEXTRACT_VECTOR_ELT(SDNode *N) { if (CstElt->getAPIntValue().ult(VT.getVectorNumElements())) DemandedElts.setBit(CstElt->getZExtValue()); } - if (SimplifyDemandedVectorElts(InVec, DemandedElts, true)) + if (SimplifyDemandedVectorElts(InVec, DemandedElts, true)) { + // We simplified the vector operand of this extract element. If this + // extract is not dead, visit it again so it is folded properly. + if (N->getOpcode() != ISD::DELETED_NODE) + AddToWorklist(N); return SDValue(N, 0); + } } bool BCNumEltsChanged = false; |