358     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
385     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
413     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
414       return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
441       if (isa<UndefValue>(Src0)) {  in instCombineIntrinsic()
442         return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
445       if (isa<UndefValue>(Src1)) {  in instCombineIntrinsic()
488       if (isa<UndefValue>(Src0)) {  in instCombineIntrinsic()
489         return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
541     if (isa<UndefValue>(Src0) && isa<UndefValue>(Src1)) {  in instCombineIntrinsic()
542       return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
554     if (isa<UndefValue>(Src0) && isa<UndefValue>(Src1)) {  in instCombineIntrinsic()
555       return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
564     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
637         if (!isa<UndefValue>(Src)) {  in instCombineIntrinsic()
638           IC.replaceOperand(II, I + 2, UndefValue::get(Src->getType()));  in instCombineIntrinsic()
662     if (match(Src0, PatternMatch::m_NaN()) || isa<UndefValue>(Src0)) {  in instCombineIntrinsic()
664     } else if (match(Src1, PatternMatch::m_NaN()) || isa<UndefValue>(Src1)) {  in instCombineIntrinsic()
666     } else if (match(Src2, PatternMatch::m_NaN()) || isa<UndefValue>(Src2)) {  in instCombineIntrinsic()
903         BM->getZExtValue() != 0xF || isa<UndefValue>(Old))  in instCombineIntrinsic()
907     return IC.replaceOperand(II, 0, UndefValue::get(Old->getType()));  in instCombineIntrinsic()
913     if (isa<UndefValue>(VDstIn))  in instCombineIntrinsic()
921     return IC.replaceOperand(II, 0, UndefValue::get(VDstIn->getType()));  in instCombineIntrinsic()
974     if (isa<UndefValue>(Op0)) {  in instCombineIntrinsic()
1009     if (isa<UndefValue>(Op1) || match(Op1, PatternMatch::m_ZeroInt())) {  in instCombineIntrinsic()
1064     if (isa<UndefValue>(II.getArgOperand(0)))  in instCombineIntrinsic()
1065       return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
1176     return UndefValue::get(II.getType());  in simplifyAMDGCNMemoryIntrinsicDemanded()
1204     return IC.Builder.CreateInsertElement(UndefValue::get(II.getType()),  in simplifyAMDGCNMemoryIntrinsicDemanded()