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Allow custom lowering of ADDE/ADDC/SUBE/SUBC operations. 

llvm-svn: 60102
This commit is contained in:
Sanjiv Gupta 2008-11-26 11:19:00 +00:00
parent 5b4e3b88eb
commit 80810f8c6b
1 changed files with 36 additions and 6 deletions
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42
llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -3299,11 +3299,26 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
Tmp1 = LegalizeOp(Node->getOperand(0));
Tmp2 = LegalizeOp(Node->getOperand(1));
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2);
Tmp3 = Result.getValue(0);
Tmp4 = Result.getValue(1);
switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) {
default: assert(0 && "This action is not supported yet!");
case TargetLowering::Legal:
break;
case TargetLowering::Custom:
Tmp1 = TLI.LowerOperation(Tmp3, DAG);
if (Tmp1.getNode() != NULL) {
Tmp3 = LegalizeOp(Tmp1);;
Tmp4 = LegalizeOp(Tmp1.getValue(1));
}
break;
}
// Since this produces two values, make sure to remember that we legalized
// both of them.
AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0));
AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1));
return Result;
AddLegalizedOperand(SDValue(Node, 0), Tmp3);
AddLegalizedOperand(SDValue(Node, 1), Tmp4);
return Op.getResNo() ? Tmp4 : Tmp3;
case ISD::ADDE:
case ISD::SUBE:
@ -3311,11 +3326,26 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
Tmp2 = LegalizeOp(Node->getOperand(1));
Tmp3 = LegalizeOp(Node->getOperand(2));
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, Tmp3);
Tmp3 = Result.getValue(0);
Tmp4 = Result.getValue(1);
switch (TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0))) {
default: assert(0 && "This action is not supported yet!");
case TargetLowering::Legal:
break;
case TargetLowering::Custom:
Tmp1 = TLI.LowerOperation(Tmp3, DAG);
if (Tmp1.getNode() != NULL) {
Tmp3 = LegalizeOp(Tmp1);;
Tmp4 = LegalizeOp(Tmp1.getValue(1));
}
break;
}
// Since this produces two values, make sure to remember that we legalized
// both of them.
AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0));
AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1));
return Result;
AddLegalizedOperand(SDValue(Node, 0), Tmp3);
AddLegalizedOperand(SDValue(Node, 1), Tmp4);
return Op.getResNo() ? Tmp4 : Tmp3;
case ISD::BUILD_PAIR: {
MVT PairTy = Node->getValueType(0);