diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index c05c976f39..938e17a084 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -2778,6 +2778,14 @@ SDOperand DAGCombiner::visitVBinOp(SDNode *N, ISD::NodeType IntOp, RHSOp.getOpcode() != ISD::Constant && RHSOp.getOpcode() != ISD::ConstantFP)) break; + // Can't fold divide by zero. + if (N->getOpcode() == ISD::VSDIV || N->getOpcode() == ISD::VUDIV) { + if ((RHSOp.getOpcode() == ISD::Constant && + cast<ConstantSDNode>(RHSOp.Val)->isNullValue()) || + (RHSOp.getOpcode() == ISD::ConstantFP && + !cast<ConstantFPSDNode>(RHSOp.Val)->getValue())) + break; + } Ops.push_back(DAG.getNode(ScalarOp, EltType, LHSOp, RHSOp)); AddToWorkList(Ops.back().Val); assert((Ops.back().getOpcode() == ISD::UNDEF || |