if (match(Op1, m_Or(m_Not(m_Specific(Op0)), m_Value(A))) ||
match(Op1, m_Or(m_Value(A), m_Not(m_Specific(Op0)))))
return BinaryOperator::CreateAnd(A, Op0);
+
+ // (A ^ B) & ((B ^ C) ^ A) -> (A ^ B) & ~C
+ if (match(Op0, m_Xor(m_Value(A), m_Value(B))))
+ if (match(Op1, m_Xor(m_Xor(m_Specific(B), m_Value(C)), m_Specific(A))))
+ if (Op1->hasOneUse() || cast<BinaryOperator>(Op1)->hasOneUse())
+ return BinaryOperator::CreateAnd(Op0, Builder->CreateNot(C));
+
+ // ((A ^ C) ^ B) & (B ^ A) -> (B ^ A) & ~C
+ if (match(Op0, m_Xor(m_Xor(m_Value(A), m_Value(C)), m_Value(B))))
+ if (match(Op1, m_Xor(m_Specific(B), m_Specific(A))))
+ if (Op0->hasOneUse() || cast<BinaryOperator>(Op0)->hasOneUse())
+ return BinaryOperator::CreateAnd(Op1, Builder->CreateNot(C));
+
+ // (A | B) & ((~A) ^ B) -> (A & B)
+ if (match(Op0, m_Or(m_Value(A), m_Value(B))) &&
+ match(Op1, m_Xor(m_Not(m_Specific(A)), m_Specific(B))))
+ return BinaryOperator::CreateAnd(A, B);
+
+ // ((~A) ^ B) & (A | B) -> (A & B)
+ if (match(Op0, m_Xor(m_Not(m_Value(A)), m_Value(B))) &&
+ match(Op1, m_Or(m_Specific(A), m_Specific(B))))
+ return BinaryOperator::CreateAnd(A, B);
}
if (ICmpInst *RHS = dyn_cast<ICmpInst>(Op1))
return BinaryOperator::CreateXor(NOr, C1);
}
+ // ((~A & B) | A) -> (A | B)
+ if (match(Op0, m_And(m_Not(m_Value(A)), m_Value(B))) &&
+ match(Op1, m_Specific(A)))
+ return BinaryOperator::CreateOr(A, B);
+
+ // ((A & B) | ~A) -> (~A | B)
+ if (match(Op0, m_And(m_Value(A), m_Value(B))) &&
+ match(Op1, m_Not(m_Specific(A))))
+ return BinaryOperator::CreateOr(Builder->CreateNot(A), B);
+
+ // (A & (~B)) | (A ^ B) -> (A ^ B)
+ if (match(Op0, m_And(m_Value(A), m_Not(m_Value(B)))) &&
+ match(Op1, m_Xor(m_Specific(A), m_Specific(B))))
+ return BinaryOperator::CreateXor(A, B);
+
+ // (A ^ B) | ( A & (~B)) -> (A ^ B)
+ if (match(Op0, m_Xor(m_Value(A), m_Value(B))) &&
+ match(Op1, m_And(m_Specific(A), m_Not(m_Specific(B)))))
+ return BinaryOperator::CreateXor(A, B);
+
// (A & C)|(B & D)
Value *C = nullptr, *D = nullptr;
if (match(Op0, m_And(m_Value(A), m_Value(C))) &&
}
}
+ // (A ^ B) | ((B ^ C) ^ A) -> (A ^ B) | C
+ if (match(Op0, m_Xor(m_Value(A), m_Value(B))))
+ if (match(Op1, m_Xor(m_Xor(m_Specific(B), m_Value(C)), m_Specific(A))))
+ if (Op1->hasOneUse() || cast<BinaryOperator>(Op1)->hasOneUse())
+ return BinaryOperator::CreateOr(Op0, C);
+
+ // ((A ^ C) ^ B) | (B ^ A) -> (B ^ A) | C
+ if (match(Op0, m_Xor(m_Xor(m_Value(A), m_Value(C)), m_Value(B))))
+ if (match(Op1, m_Xor(m_Specific(B), m_Specific(A))))
+ if (Op0->hasOneUse() || cast<BinaryOperator>(Op0)->hasOneUse())
+ return BinaryOperator::CreateOr(Op1, C);
+
// (X >> Z) | (Y >> Z) -> (X|Y) >> Z for all shifts.
if (BinaryOperator *SI1 = dyn_cast<BinaryOperator>(Op1)) {
if (BinaryOperator *SI0 = dyn_cast<BinaryOperator>(Op0))
return BinaryOperator::CreateOr(Not, Op0);
}
+ // (A & B) | ((~A) ^ B) -> (~A ^ B)
+ if (match(Op0, m_And(m_Value(A), m_Value(B))) &&
+ match(Op1, m_Xor(m_Not(m_Specific(A)), m_Specific(B))))
+ return BinaryOperator::CreateXor(Builder->CreateNot(A), B);
+
+ // ((~A) ^ B) | (A & B) -> (~A ^ B)
+ if (match(Op0, m_Xor(m_Not(m_Value(A)), m_Value(B))) &&
+ match(Op1, m_And(m_Specific(A), m_Specific(B))))
+ return BinaryOperator::CreateXor(Builder->CreateNot(A), B);
+
if (SwappedForXor)
std::swap(Op0, Op1);
if ((A == C && B == D) || (A == D && B == C))
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)))) {
+ if ((A == C && B == D) || (A == D && B == C))
+ return BinaryOperator::CreateAnd(A, B);
+ }
+ // (A | B)^(A ^ B) -> A & B
+ if (match(Op0I, m_Or(m_Value(A), m_Value(B))) &&
+ match(Op1I, m_Xor(m_Value(C), m_Value(D)))) {
+ if ((A == C && B == D) || (A == D && B == C))
+ return BinaryOperator::CreateAnd(A, B);
+ }
+ // (A & B) ^ (A ^ B) -> (A | B)
+ if (match(Op0I, m_And(m_Value(A), m_Value(B))) &&
+ match(Op1I, m_Xor(m_Specific(A), m_Specific(B))))
+ return BinaryOperator::CreateOr(A, B);
+ // (A ^ B) ^ (A & B) -> (A | B)
+ if (match(Op0I, m_Xor(m_Value(A), m_Value(B))) &&
+ match(Op1I, m_And(m_Specific(A), m_Specific(B))))
+ return BinaryOperator::CreateOr(A, B);
}
+ // (A | B)^(~A) -> (A | ~B)
+ Value *A = nullptr, *B = nullptr;
+ if (match(Op0, m_Or(m_Value(A), m_Value(B))) &&
+ match(Op1, m_Not(m_Specific(A))))
+ return BinaryOperator::CreateOr(A, Builder->CreateNot(B));
+
+ // (A & ~B) ^ (~A) -> ~(A & B)
+ if (match(Op0, m_And(m_Value(A), m_Not(m_Value(B)))) &&
+ match(Op1, m_Not(m_Specific(A))))
+ return BinaryOperator::CreateNot(Builder->CreateAnd(A, B));
+
// (icmp1 A, B) ^ (icmp2 A, B) --> (icmp3 A, B)
if (ICmpInst *RHS = dyn_cast<ICmpInst>(I.getOperand(1)))
if (ICmpInst *LHS = dyn_cast<ICmpInst>(I.getOperand(0)))