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legalize copytoreg and copyfromreg nodes that have flag operands correctly. 

llvm-svn: 24826
This commit is contained in:
Chris Lattner 2005-12-18 15:27:43 +00:00
parent a0be18c9a4
commit e3c67e97c7
1 changed files with 34 additions and 11 deletions
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45
llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -567,13 +567,21 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
return LegalizeOp(Node->getOperand(Op.ResNo));
case ISD::CopyFromReg:
Tmp1 = LegalizeOp(Node->getOperand(0));
if (Tmp1 != Node->getOperand(0))
Result = DAG.getCopyFromReg(Tmp1,
Result = Op.getValue(0);
if (Node->getNumOperands() == 2) {
if (Tmp1 != Node->getOperand(0))
Result = DAG.getCopyFromReg(Tmp1,
cast<RegisterSDNode>(Node->getOperand(1))->getReg(),
Node->getValueType(0));
else
Result = Op.getValue(0);
Node->getValueType(0));
} else {
assert(Node->getNumOperands() == 3 && "Invalid copyfromreg!");
Tmp2 = LegalizeOp(Node->getOperand(2));
if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(2))
Result = DAG.getCopyFromReg(Tmp1,
cast<RegisterSDNode>(Node->getOperand(1))->getReg(),
Node->getValueType(0), Tmp2);
AddLegalizedOperand(Op.getValue(2), Result.getValue(2));
}
// Since CopyFromReg produces two values, make sure to remember that we
// legalized both of them.
AddLegalizedOperand(Op.getValue(0), Result);
@ -1130,11 +1138,27 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
assert(isTypeLegal(Node->getOperand(2).getValueType()) &&
"Register type must be legal!");
// Legalize the incoming value (must be legal).
// Legalize the incoming value (must be a legal type).
Tmp2 = LegalizeOp(Node->getOperand(2));
if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(2))
Result = DAG.getNode(ISD::CopyToReg, MVT::Other, Tmp1,
Node->getOperand(1), Tmp2);
if (Node->getNumOperands() == 3) {
if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(2))
Result = DAG.getNode(ISD::CopyToReg, MVT::Other, Tmp1,
Node->getOperand(1), Tmp2);
} else {
assert(Node->getNumOperands() == 4 && "Unknown CopyToReg");
Tmp3 = LegalizeOp(Node->getOperand(3));
if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(2) ||
Tmp3 != Node->getOperand(3)) {
unsigned Reg = cast<RegisterSDNode>(Node->getOperand(1))->getReg();
Result = DAG.getCopyToReg(Tmp1, Reg, Tmp2, Tmp3);
}
// Since this produces two values, make sure to remember that we legalized
// both of them.
AddLegalizedOperand(SDOperand(Node, 0), Result);
AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1));
return Result.getValue(Op.ResNo);
}
break;
case ISD::RET:
@ -1278,7 +1302,6 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
AddLegalizedOperand(SDOperand(Node, 0), Result);
AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1));
return Result.getValue(Op.ResNo);
break;
case ISD::TRUNCSTORE:
Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain.