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| author | Evan Cheng <evan.cheng@apple.com> | 2006-05-31 06:08:35 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2006-05-31 06:08:35 +0000 |
| commit | 7b336a87466da67cbd528d124e38c12390707a24 (patch) | |
| tree | 0ac51bf12e4cadd3b8c572d4b8a249ee104e871c | |
| parent | 25edc3565cfdcc161bc3d2b0a7bfc607fcc0d1ba (diff) | |
visitVBinOp: Can't fold divide by zero!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28584 91177308-0d34-0410-b5e6-96231b3b80d8
| -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 || |