556     AddPromotedToType(ISD::SIGN_EXTEND, MVT::i16, MVT::i32);  in SITargetLowering()
561     setOperationAction({ISD::SIGN_EXTEND, ISD::SDIV, ISD::UDIV, ISD::SREM,  in SITargetLowering()
734     setOperationAction({ISD::ANY_EXTEND, ISD::ZERO_EXTEND, ISD::SIGN_EXTEND},  in SITargetLowering()
738     setOperationAction({ISD::ANY_EXTEND, ISD::ZERO_EXTEND, ISD::SIGN_EXTEND},  in SITargetLowering()
741     setOperationAction({ISD::ANY_EXTEND, ISD::ZERO_EXTEND, ISD::SIGN_EXTEND},  in SITargetLowering()
3208       Arg = DAG.getNode(ISD::SIGN_EXTEND, DL, VA.getLocVT(), Arg);  in LowerReturn()
3770       Arg = DAG.getNode(ISD::SIGN_EXTEND, DL, VA.getLocVT(), Arg);  in LowerCall()
6030       ISD::SIGN_EXTEND : ISD::ZERO_EXTEND;  in lowerICMPIntrinsic()
10160     return DAG.getNode(ISD::SIGN_EXTEND, SL, VT, Op);  in getLoadExtOrTrunc()
11631       (RHS.getOpcode() == ISD::SIGN_EXTEND || LHS.getOpcode() == ISD::SIGN_EXTEND)) {  in performAndCombine()
11633     if (RHS.getOpcode() != ISD::SIGN_EXTEND)  in performAndCombine()
11749   case ISD::SIGN_EXTEND:  in calculateSrcByte()
11937   case ISD::SIGN_EXTEND:  in calculateByteProvider()
12065   case ISD::SIGN_EXTEND:  in isExtendedFrom16Bits()
14207   if (Opc == ISD::ZERO_EXTEND || Opc == ISD::SIGN_EXTEND ||  in performAddCombine()
14215   case ISD::SIGN_EXTEND:  in performAddCombine()
14224     Opc = (Opc == ISD::SIGN_EXTEND) ? ISD::USUBO_CARRY : ISD::UADDO_CARRY;  in performAddCombine()
14256   case ISD::SIGN_EXTEND:  in performSubCombine()
14265     Opc = (Opc == ISD::SIGN_EXTEND) ? ISD::UADDO_CARRY : ISD::USUBO_CARRY;  in performSubCombine()
14523     if (VT == MVT::i32 && LHS.getOpcode() == ISD::SIGN_EXTEND &&  in performSetCCCombine()