199     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
226     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
254     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
255       return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
282       if (isa<UndefValue>(Src0)) {  in instCombineIntrinsic()
283         return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
286       if (isa<UndefValue>(Src1)) {  in instCombineIntrinsic()
329       if (isa<UndefValue>(Src0)) {  in instCombineIntrinsic()
330         return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
382     if (isa<UndefValue>(Src0) && isa<UndefValue>(Src1)) {  in instCombineIntrinsic()
383       return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
395     if (isa<UndefValue>(Src0) && isa<UndefValue>(Src1)) {  in instCombineIntrinsic()
396       return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));  in instCombineIntrinsic()
405     if (isa<UndefValue>(Src)) {  in instCombineIntrinsic()
477         if (!isa<UndefValue>(Src)) {  in instCombineIntrinsic()
478           IC.replaceOperand(II, I + 2, UndefValue::get(Src->getType()));  in instCombineIntrinsic()
502     if (match(Src0, PatternMatch::m_NaN()) || isa<UndefValue>(Src0)) {  in instCombineIntrinsic()
504     } else if (match(Src1, PatternMatch::m_NaN()) || isa<UndefValue>(Src1)) {  in instCombineIntrinsic()
506     } else if (match(Src2, PatternMatch::m_NaN()) || isa<UndefValue>(Src2)) {  in instCombineIntrinsic()
745         BM->getZExtValue() != 0xF || isa<UndefValue>(Old))  in instCombineIntrinsic()
749     return IC.replaceOperand(II, 0, UndefValue::get(Old->getType()));  in instCombineIntrinsic()
755     if (isa<UndefValue>(VDstIn))  in instCombineIntrinsic()
763     return IC.replaceOperand(II, 0, UndefValue::get(VDstIn->getType()));  in instCombineIntrinsic()
810     if (isa<UndefValue>(Op0)) {  in instCombineIntrinsic()
845     if (isa<UndefValue>(Op1) || match(Op1, PatternMatch::m_ZeroInt())) {  in instCombineIntrinsic()
1003     return UndefValue::get(II.getType());  in simplifyAMDGCNMemoryIntrinsicDemanded()
1031     return IC.Builder.CreateInsertElement(UndefValue::get(II.getType()),  in simplifyAMDGCNMemoryIntrinsicDemanded()