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print and fold BRCONDTWOWAY correctly 

llvm-svn: 21165
This commit is contained in:
Chris Lattner 2005-04-09 03:27:28 +00:00
parent a3a135a9f7
commit b0713c74a2
1 changed files with 25 additions and 11 deletions
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36
llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@ -992,18 +992,31 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
case 1: return getNode(Opcode, VT, Children[0]);
case 2: return getNode(Opcode, VT, Children[0], Children[1]);
case 3: return getNode(Opcode, VT, Children[0], Children[1], Children[2]);
default:
// FIXME: MEMOIZE!!
SDNode *N = new SDNode(Opcode, Children);
if (Opcode != ISD::ADD_PARTS && Opcode != ISD::SUB_PARTS) {
N->setValueTypes(VT);
} else {
std::vector<MVT::ValueType> V(N->getNumOperands()/2, VT);
N->setValueTypes(V);
}
AllNodes.push_back(N);
return SDOperand(N, 0);
default: break;
}
ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(Children[1].Val);
switch (Opcode) {
default: break;
case ISD::BRCONDTWOWAY:
if (N1C)
if (N1C->getValue()) // Unconditional branch to true dest.
return getNode(ISD::BR, MVT::Other, Children[0], Children[2]);
else // Unconditional branch to false dest.
return getNode(ISD::BR, MVT::Other, Children[0], Children[3]);
break;
}
// FIXME: MEMOIZE!!
SDNode *N = new SDNode(Opcode, Children);
if (Opcode != ISD::ADD_PARTS && Opcode != ISD::SUB_PARTS) {
N->setValueTypes(VT);
} else {
std::vector<MVT::ValueType> V(N->getNumOperands()/2, VT);
N->setValueTypes(V);
}
AllNodes.push_back(N);
return SDOperand(N, 0);
}
SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,SDOperand N1,
@ -1243,6 +1256,7 @@ const char *SDNode::getOperationName() const {
// Control flow instructions
case ISD::BR: return "br";
case ISD::BRCOND: return "brcond";
case ISD::BRCONDTWOWAY: return "brcondtwoway";
case ISD::RET: return "ret";
case ISD::CALL: return "call";
case ISD::ADJCALLSTACKDOWN: return "adjcallstackdown";