6672   SDValue N0 = N->getOperand(0);  in combineZERO_EXTEND()  local
6674   if (N0.getOpcode() == SystemZISD::SELECT_CCMASK) {  in combineZERO_EXTEND()
6675     auto *TrueOp = dyn_cast<ConstantSDNode>(N0.getOperand(0));  in combineZERO_EXTEND()
6676     auto *FalseOp = dyn_cast<ConstantSDNode>(N0.getOperand(1));  in combineZERO_EXTEND()
6678       SDLoc DL(N0);  in combineZERO_EXTEND()
6681                         N0.getOperand(2), N0.getOperand(3), N0.getOperand(4) };  in combineZERO_EXTEND()
6684       if (!N0.hasOneUse()) {  in combineZERO_EXTEND()
6686           DAG.getNode(ISD::TRUNCATE, DL, N0.getValueType(), NewSelect);  in combineZERO_EXTEND()
6687         DCI.CombineTo(N0.getNode(), TruncSelect);  in combineZERO_EXTEND()
6695   if (N0.getOpcode() == ISD::XOR &&  in combineZERO_EXTEND()
6696       N0.hasOneUse() && N0.getOperand(0).hasOneUse() &&  in combineZERO_EXTEND()
6697       N0.getOperand(0).getOpcode() == ISD::TRUNCATE &&  in combineZERO_EXTEND()
6698       N0.getOperand(1).getOpcode() == ISD::Constant) {  in combineZERO_EXTEND()
6699     SDValue X = N0.getOperand(0).getOperand(0);  in combineZERO_EXTEND()
6703                                               N0.getValueSizeInBits(),  in combineZERO_EXTEND()
6707         APInt Mask = N0.getConstantOperandAPInt(1).zext(VT.getSizeInBits());  in combineZERO_EXTEND()
6708         return DAG.getNode(ISD::XOR, SDLoc(N0), VT,  in combineZERO_EXTEND()
6709                            X, DAG.getConstant(Mask, SDLoc(N0), VT));  in combineZERO_EXTEND()
6723   SDValue N0 = N->getOperand(0);  in combineSIGN_EXTEND_INREG()  local
6726   if (N0.hasOneUse() && N0.getOpcode() == ISD::ANY_EXTEND)  in combineSIGN_EXTEND_INREG()
6727     N0 = N0.getOperand(0);  in combineSIGN_EXTEND_INREG()
6728   if (EVT == MVT::i1 && N0.hasOneUse() && N0.getOpcode() == ISD::SETCC) {  in combineSIGN_EXTEND_INREG()
6729     SDLoc DL(N0);  in combineSIGN_EXTEND_INREG()
6730     SDValue Ops[] = { N0.getOperand(0), N0.getOperand(1),  in combineSIGN_EXTEND_INREG()
6732                       DAG.getConstant(0, DL, VT), N0.getOperand(2) };  in combineSIGN_EXTEND_INREG()
6744   SDValue N0 = N->getOperand(0);  in combineSIGN_EXTEND()  local
6746   if (N0.hasOneUse() && N0.getOpcode() == ISD::SRA) {  in combineSIGN_EXTEND()
6747     auto *SraAmt = dyn_cast<ConstantSDNode>(N0.getOperand(1));  in combineSIGN_EXTEND()
6748     SDValue Inner = N0.getOperand(0);  in combineSIGN_EXTEND()
6751         unsigned Extra = (VT.getSizeInBits() - N0.getValueSizeInBits());  in combineSIGN_EXTEND()
6754         EVT ShiftVT = N0.getOperand(1).getValueType();  in combineSIGN_EXTEND()
6760         return DAG.getNode(ISD::SRA, SDLoc(N0), VT, Shl,  in combineSIGN_EXTEND()
6761                            DAG.getConstant(NewSraAmt, SDLoc(N0), ShiftVT));  in combineSIGN_EXTEND()