if ((A == C && B == D) || (A == D && B == C))
return BinaryOperator::CreateXor(A, B);
}
+ // (A | ~B) ^ (~A | B) -> A ^ B
+ if (match(Op0I, m_Or(m_Value(A), m_Not(m_Value(B)))) &&
+ match(Op1I, m_Or(m_Not(m_Specific(A)), m_Specific(B)))) {
+ return BinaryOperator::CreateXor(A, B);
+ }
+ // (~A | B) ^ (A | ~B) -> A ^ B
+ if (match(Op0I, m_Or(m_Not(m_Value(A)), m_Value(B))) &&
+ match(Op1I, m_Or(m_Specific(A), m_Not(m_Specific(B))))) {
+ return BinaryOperator::CreateXor(A, B);
+ }
// (A ^ B)^(A | B) -> A & B
if (match(Op0I, m_Xor(m_Value(A), m_Value(B))) &&
match(Op1I, m_Or(m_Value(C), m_Value(D)))) {