578   if (match(Op1, m_Undef()))  in SimplifyAddInst()
720   if (match(Op0, m_Undef()) || match(Op1, m_Undef()))  in SimplifySubInst()
855   if (match(Op1, m_CombineOr(m_Undef(), m_Zero())))  in SimplifyMulInst()
913   if (match(Op1, m_Undef()))  in simplifyDivRem()
936   if (match(Op0, m_Undef()))  in simplifyDivRem()
1274   if (match(Op0, m_Undef()))  in SimplifyRightShift()
1296   if (match(Op0, m_Undef()))  in SimplifyShlInst()
1787   if (match(Op1, m_Undef()))  in SimplifyAndInst()
1927   if (match(Op1, m_Undef()) || match(Op1, m_AllOnes()))  in SimplifyOrInst()
2061   if (match(Op1, m_Undef()))  in SimplifyXorInst()
4176   if (match(Val, m_Undef()))  in SimplifyInsertValueInst()
4184       if (match(Agg, m_Undef()))  in SimplifyInsertValueInst()
4982     if (match(Op0, m_Undef()) || match(Op1, m_Undef()))  in simplifyBinaryIntrinsic()
4996     if (match(Op0, m_Undef()) || match(Op1, m_Undef()))  in simplifyBinaryIntrinsic()
5013     if (Op0 == Op1 || match(Op0, m_Undef()) || match(Op1, m_Undef()))  in simplifyBinaryIntrinsic()
5042     if (match(Op0, m_Undef()))  in simplifyBinaryIntrinsic()
5044     if (match(Op1, m_Undef()))  in simplifyBinaryIntrinsic()
5118     if (match(Op0, m_Undef()) && match(Op1, m_Undef()))  in simplifyIntrinsic()
5122     if (match(ShAmtArg, m_Undef()))  in simplifyIntrinsic()