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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 | 64d28460170910ae7dddcc4e227d5b46d3135d49 (patch) | |
| tree | 1da13eea231e4715c44623cfc1739940087f042c /llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | |
| parent | 03977ec9b179ffbbc7b66505a9071547e9bb5e29 (diff) | |
| download | bcm5719-llvm-64d28460170910ae7dddcc4e227d5b46d3135d49.tar.gz bcm5719-llvm-64d28460170910ae7dddcc4e227d5b46d3135d49.zip | |
visitVBinOp: Can't fold divide by zero!
llvm-svn: 28584
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index c05c976f390..938e17a084f 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/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 || |
