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Implement splitting of UNDEF nodes. This is the first step towards fixing PR1811

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44239 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-11-19 20:21:32 +00:00
parent f4bc9b1802
commit daf9bc8eee
1 changed files with 4 additions and 0 deletions
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4
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -6265,6 +6265,10 @@ void SelectionDAGLegalize::SplitVectorOp(SDOperand Op, SDOperand &Lo,
Node->dump(&DAG);
#endif
assert(0 && "Unhandled operation in SplitVectorOp!");
case ISD::UNDEF:
Lo = DAG.getNode(ISD::UNDEF, NewVT_Lo);
Hi = DAG.getNode(ISD::UNDEF, NewVT_Hi);
break;
case ISD::BUILD_PAIR:
Lo = Node->getOperand(0);
Hi = Node->getOperand(1);