389       if (!ConstElt->isNullValue() && !isa<UndefValue>(Elt))  in trimTrailingZerosInVector()
416       if (!Elt || (Elt != FirstComponent && !isa<UndefValue>(Elt)))  in defaultComponentBroadcast()
451     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
510     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
594     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
595       return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
650     if (isa<UndefValue>(Src0) && isa<UndefValue>(Src1)) {  in instCombineIntrinsic()
651       return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
663     if (isa<UndefValue>(Src0) && isa<UndefValue>(Src1)) {  in instCombineIntrinsic()
664       return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
673     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
746         if (!isa<UndefValue>(Src)) {  in instCombineIntrinsic()
747           IC.replaceOperand(II, I + 2, UndefValue::get(Src->getType()));  in instCombineIntrinsic()
771     if (match(Src0, PatternMatch::m_NaN()) || isa<UndefValue>(Src0)) {  in instCombineIntrinsic()
773     } else if (match(Src1, PatternMatch::m_NaN()) || isa<UndefValue>(Src1)) {  in instCombineIntrinsic()
775     } else if (match(Src2, PatternMatch::m_NaN()) || isa<UndefValue>(Src2)) {  in instCombineIntrinsic()
1029         BM->getZExtValue() != 0xF || isa<UndefValue>(Old))  in instCombineIntrinsic()
1033     return IC.replaceOperand(II, 0, UndefValue::get(Old->getType()));  in instCombineIntrinsic()
1041     if (isa<UndefValue>(VDstIn))  in instCombineIntrinsic()
1060     return IC.replaceOperand(II, 0, UndefValue::get(VDstIn->getType()));  in instCombineIntrinsic()
1116     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
1226     if (isa<UndefValue>(II.getArgOperand(0)))  in instCombineIntrinsic()
1227       return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()