983       Op.getValueType().isByteSized() ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND;  in PromoteOperand()
1395   case ISD::SIGN_EXTEND:        return visitSIGN_EXTEND(N);  in visit()
1484     case ISD::SIGN_EXTEND:  in combine()
1758   if (N0.getOpcode() == ISD::SIGN_EXTEND &&  in visitADD()
1760       !TLI.isOperationLegal(ISD::SIGN_EXTEND, MVT::i1)) {  in visitADD()
2495       N0 = DAG.getNode(ISD::SIGN_EXTEND, DL, NewVT, N0);  in visitMULHS()
2496       N1 = DAG.getNode(ISD::SIGN_EXTEND, DL, NewVT, N1);  in visitMULHS()
2609       SDValue Lo = DAG.getNode(ISD::SIGN_EXTEND, DL, NewVT, N->getOperand(0));  in visitSMUL_LOHI()
2610       SDValue Hi = DAG.getNode(ISD::SIGN_EXTEND, DL, NewVT, N->getOperand(1));  in visitSMUL_LOHI()
2722        N0.getOpcode() == ISD::SIGN_EXTEND ||  in SimplifyBinOpWithSameOpcodeHands()
4102   if ((LHSShiftAmt.getOpcode() == ISD::SIGN_EXTEND ||  in MatchRotate()
4106       (RHSShiftAmt.getOpcode() == ISD::SIGN_EXTEND ||  in MatchRotate()
4486               N0.getOpcode() == ISD::SIGN_EXTEND) &&  in visitSHL()
4695           TLI.isOperationLegalOrCustom(ISD::SIGN_EXTEND, TruncVT) &&  in visitSRA()
4706         return DAG.getNode(ISD::SIGN_EXTEND, DL,  in visitSRA()
5786   assert((Opcode == ISD::SIGN_EXTEND || Opcode == ISD::ZERO_EXTEND ||  in tryToFoldExtendOfConstant()
5824     if (Opcode == ISD::SIGN_EXTEND || Opcode == ISD::SIGN_EXTEND_VECTOR_INREG)  in tryToFoldExtendOfConstant()
5924   assert((N->getOpcode() == ISD::SIGN_EXTEND ||  in CombineExtLoad()
5960       N->getOpcode() == ISD::SIGN_EXTEND ? ISD::SEXTLOAD : ISD::ZEXTLOAD;  in CombineExtLoad()
6024   if (N0.getOpcode() == ISD::SIGN_EXTEND || N0.getOpcode() == ISD::ANY_EXTEND)  in visitSIGN_EXTEND()
6025     return DAG.getNode(ISD::SIGN_EXTEND, SDLoc(N), VT,  in visitSIGN_EXTEND()
6058         return DAG.getNode(ISD::SIGN_EXTEND, SDLoc(N), VT, Op);  in visitSIGN_EXTEND()
6088       DoXform = ExtendUsesToFormExtLoad(N, N0, ISD::SIGN_EXTEND, SetCCs, TLI);  in visitSIGN_EXTEND()
6102                       ISD::SIGN_EXTEND);  in visitSIGN_EXTEND()
6146         DoXform = ExtendUsesToFormExtLoad(N, N0.getOperand(0), ISD::SIGN_EXTEND,  in visitSIGN_EXTEND()
6164                         ISD::SIGN_EXTEND);  in visitSIGN_EXTEND()
6583       N0.getOpcode() == ISD::SIGN_EXTEND)  in visitANY_EXTEND()
6968   if (N0.getOpcode() == ISD::SIGN_EXTEND || N0.getOpcode() == ISD::ANY_EXTEND) {  in visitSIGN_EXTEND_INREG()
6971         (!LegalOperations || TLI.isOperationLegal(ISD::SIGN_EXTEND, VT)))  in visitSIGN_EXTEND_INREG()
6972       return DAG.getNode(ISD::SIGN_EXTEND, SDLoc(N), VT, N00, N1);  in visitSIGN_EXTEND_INREG()
7091       N0.getOpcode() == ISD::SIGN_EXTEND ||  in visitTRUNCATE()
7529         X = DAG.getNode(ISD::SIGN_EXTEND, SDLoc(N), VT, X);  in visitBITCAST()
9104       unsigned ExtOp = IsInputSigned && IsOutputSigned ? ISD::SIGN_EXTEND  in FoldIntToFPToInt()
11111     if (IndexOffset->getOpcode() == ISD::SIGN_EXTEND) {  in match()
11128     if (Index->getOpcode() == ISD::SIGN_EXTEND) {  in match()