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Lines Matching refs:IsUndef

750     if (UseMO.isUndef())
874 if (Op.getSubReg() == 0 || Op.isUndef())
919 if (DstOperand.getSubReg() && !DstOperand.isUndef())
1190 if (MO.isDef() /*|| MO.isUndef()*/)
1221 bool IsUndef = true;
1226 IsUndef = false;
1230 if (IsUndef) {
1251 if (SubReg == 0 || MO.isUndef())
2786 if (Copy->getOperand(1).isUndef())