if (DAG.SignBitIsZero(N1) && DAG.SignBitIsZero(N0))
return DAG.getNode(ISD::UREM, DL, VT, N0, N1);
} else {
- SDValue NegOne = DAG.getAllOnesConstant(DL, VT);
if (DAG.isKnownToBeAPowerOfTwo(N1)) {
// fold (urem x, pow2) -> (and x, pow2-1)
+ SDValue NegOne = DAG.getAllOnesConstant(DL, VT);
SDValue Add = DAG.getNode(ISD::ADD, DL, VT, N1, NegOne);
AddToWorklist(Add.getNode());
return DAG.getNode(ISD::AND, DL, VT, N0, Add);
if (N1.getOpcode() == ISD::SHL &&
DAG.isKnownToBeAPowerOfTwo(N1.getOperand(0))) {
// fold (urem x, (shl pow2, y)) -> (and x, (add (shl pow2, y), -1))
+ SDValue NegOne = DAG.getAllOnesConstant(DL, VT);
SDValue Add = DAG.getNode(ISD::ADD, DL, VT, N1, NegOne);
AddToWorklist(Add.getNode());
return DAG.getNode(ISD::AND, DL, VT, N0, Add);