AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1));
return Result.getValue(Op.ResNo);
case TargetLowering::Expand:
- Tmp1 = DAG.getNode(ISD::UNDEF, Node->getValueType(0));
- AddLegalizedOperand(SDOperand(Node, 0), Tmp1);
- AddLegalizedOperand(SDOperand(Node, 1), Node->getOperand(0));
- return Op.ResNo ? Node->getOperand(0) : Tmp1;
+ // Expand to CopyFromReg if the target set
+ // StackPointerRegisterToSaveRestore.
+ if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) {
+ Tmp1 = DAG.getCopyFromReg(Node->getOperand(0), SP,
+ Node->getValueType(0));
+ AddLegalizedOperand(SDOperand(Node, 0), Tmp1);
+ AddLegalizedOperand(SDOperand(Node, 1), Tmp1.getValue(1));
+ return Tmp1.getValue(Op.ResNo);
+ } else {
+ Tmp1 = DAG.getNode(ISD::UNDEF, Node->getValueType(0));
+ AddLegalizedOperand(SDOperand(Node, 0), Tmp1);
+ AddLegalizedOperand(SDOperand(Node, 1), Node->getOperand(0));
+ return Op.ResNo ? Node->getOperand(0) : Tmp1;
+ }
}
case ISD::STACKRESTORE:
case TargetLowering::Legal:
break;
case TargetLowering::Expand:
- Result = Tmp1;
+ // Expand to CopyToReg if the target set
+ // StackPointerRegisterToSaveRestore.
+ if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) {
+ Result = DAG.getCopyToReg(Tmp1, SP, Tmp2);
+ } else {
+ Result = Tmp1;
+ }
break;
}
break;