LoOps[1] = RHSL;
HiOps[0] = LHSH;
HiOps[1] = RHSH;
- if(TLI.isOperationLegal(ISD::ADDC, NVT)) {
+ //cascaded check to see if any smaller size has a a carry flag.
+ unsigned OpV = Node->getOpcode() == ISD::ADD ? ISD::ADDC : ISD::SUBC;
+ bool hasCarry = false;
+ if (NVT == MVT::i64)
+ hasCarry |= TLI.isOperationLegal(OpV, MVT::i32)
+ | TLI.isOperationLegal(OpV, MVT::i16)
+ | TLI.isOperationLegal(OpV, MVT::i8);
+ if (NVT == MVT::i32)
+ hasCarry |= TLI.isOperationLegal(OpV, MVT::i16)
+ | TLI.isOperationLegal(OpV, MVT::i8);
+ if (NVT == MVT::i16)
+ hasCarry |= TLI.isOperationLegal(OpV, MVT::i8);
+
+ if(hasCarry) {
if (Node->getOpcode() == ISD::ADD) {
Lo = DAG.getNode(ISD::ADDC, VTList, LoOps, 2);
HiOps[2] = Lo.getValue(1);
if (Node->getOpcode() == ISD::ADD) {
Lo = DAG.getNode(ISD::ADD, VTList, LoOps, 2);
Hi = DAG.getNode(ISD::ADD, VTList, HiOps, 2);
- SDValue Cmp1 = DAG.getSetCC(NVT, Lo, LoOps[0], ISD::SETULT);
+ SDValue Cmp1 = DAG.getSetCC(TLI.getSetCCResultType(Lo),
+ Lo, LoOps[0], ISD::SETULT);
SDValue Carry1 = DAG.getNode(ISD::SELECT, NVT, Cmp1,
DAG.getConstant(1, NVT),
DAG.getConstant(0, NVT));
- SDValue Cmp2 = DAG.getSetCC(NVT, Lo, LoOps[1], ISD::SETULT);
+ SDValue Cmp2 = DAG.getSetCC(TLI.getSetCCResultType(Lo),
+ Lo, LoOps[1], ISD::SETULT);
SDValue Carry2 = DAG.getNode(ISD::SELECT, NVT, Cmp2,
DAG.getConstant(1, NVT),
Carry1);