[LLVMdev] LegalizeDAG Error?
Bill Wendling
wendling at apple.com
Tue Dec 22 14:38:01 PST 2009
The LegalizeDAG.cpp file has this code in SelectionDAGLegalize::PromoteNode:
case ISD::BSWAP: {
unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits();
Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Tmp1);
Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1);
Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1,
DAG.getConstant(DiffBits, TLI.getShiftAmountTy()));
Results.push_back(Tmp1);
break;
}
Notice the first DAG.getNode() call. It's using "Tmp1", which at this point isn't initialized. What should it be instead?
-bw
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