856   setTargetDAGCombine(ISD::ZERO_EXTEND);  in PPCTargetLowering()
2271         Zext = DAG.getNode(ISD::ZERO_EXTEND, dl, VT, Op.getOperand(0));  in LowerSETCC()
4664         Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::i32, Arg);  in LowerCall_32SVR4()
4955       unsigned ExtOp = Flags.isSExt() ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND;  in LowerCall_64SVR4()
5526       unsigned ExtOp = Flags.isSExt() ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND;  in LowerCall_Darwin()
5593           Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, PtrVT, Arg);  in LowerCall_Darwin()
5805       Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, VA.getLocVT(), Arg);  in LowerReturn()
5995   Value = DAG.getNode(ISD::ZERO_EXTEND, dl, getPointerTy(DAG.getDataLayout()),  in LowerSTORE()
6459                  SINT.getOpcode() == ISD::ZERO_EXTEND)) &&  in LowerINT_TO_FP()
6485       Bits = DAG.getMemIntrinsicNode(SINT.getOpcode() == ISD::ZERO_EXTEND ?  in LowerINT_TO_FP()
6636                       ISD::TRUNCATE : ISD::ZERO_EXTEND), dl, VT, RetVal);  in LowerFLT_ROUNDS_()
9513       N->getOperand(0).getOpcode() != ISD::ZERO_EXTEND &&  in DAGCombineTruncBoolExt()
9525       N->getOperand(1).getOpcode() != ISD::ZERO_EXTEND &&  in DAGCombineTruncBoolExt()
9535           N->getOperand(i).getOpcode() == ISD::ZERO_EXTEND ||  in DAGCombineTruncBoolExt()
9566             BinOp.getOperand(i).getOpcode() == ISD::ZERO_EXTEND ||  in DAGCombineTruncBoolExt()
9578                  BinOp.getOperand(i).getOpcode() == ISD::ZERO_EXTEND ||  in DAGCombineTruncBoolExt()
9664         PromOp.getOpcode() == ISD::ZERO_EXTEND ||  in DAGCombineTruncBoolExt()
9867       if ((N->getOpcode() == ISD::ZERO_EXTEND &&  in DAGCombineExtBoolTrunc()
9895     else if (N->getOpcode() == ISD::ZERO_EXTEND)  in DAGCombineExtBoolTrunc()
9955       else if (N->getOpcode() == ISD::ZERO_EXTEND)  in DAGCombineExtBoolTrunc()
9983   if (N->getOpcode() == ISD::ZERO_EXTEND)  in DAGCombineExtBoolTrunc()
10196   case ISD::ZERO_EXTEND:  in PerformDAGCombine()