diff options
Diffstat (limited to 'lib/Analysis/InstructionSimplify.cpp')
| -rw-r--r-- | lib/Analysis/InstructionSimplify.cpp | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/lib/Analysis/InstructionSimplify.cpp b/lib/Analysis/InstructionSimplify.cpp index f6632020b8fc..b4f3b87e1846 100644 --- a/lib/Analysis/InstructionSimplify.cpp +++ b/lib/Analysis/InstructionSimplify.cpp @@ -1745,14 +1745,11 @@ static Value *SimplifyAndInst(Value *Op0, Value *Op1, const SimplifyQuery &Q, return Constant::getNullValue(Op0->getType()); // (A | ?) & A = A - Value *A = nullptr, *B = nullptr; - if (match(Op0, m_Or(m_Value(A), m_Value(B))) && - (A == Op1 || B == Op1)) + if (match(Op0, m_c_Or(m_Specific(Op1), m_Value()))) return Op1; // A & (A | ?) = A - if (match(Op1, m_Or(m_Value(A), m_Value(B))) && - (A == Op0 || B == Op0)) + if (match(Op1, m_c_Or(m_Specific(Op0), m_Value()))) return Op0; // A mask that only clears known zeros of a shifted value is a no-op. @@ -1852,26 +1849,22 @@ static Value *SimplifyOrInst(Value *Op0, Value *Op1, const SimplifyQuery &Q, return Constant::getAllOnesValue(Op0->getType()); // (A & ?) | A = A - Value *A = nullptr, *B = nullptr; - if (match(Op0, m_And(m_Value(A), m_Value(B))) && - (A == Op1 || B == Op1)) + if (match(Op0, m_c_And(m_Specific(Op1), m_Value()))) return Op1; // A | (A & ?) = A - if (match(Op1, m_And(m_Value(A), m_Value(B))) && - (A == Op0 || B == Op0)) + if (match(Op1, m_c_And(m_Specific(Op0), m_Value()))) return Op0; // ~(A & ?) | A = -1 - if (match(Op0, m_Not(m_And(m_Value(A), m_Value(B)))) && - (A == Op1 || B == Op1)) + if (match(Op0, m_Not(m_c_And(m_Specific(Op1), m_Value())))) return Constant::getAllOnesValue(Op1->getType()); // A | ~(A & ?) = -1 - if (match(Op1, m_Not(m_And(m_Value(A), m_Value(B)))) && - (A == Op0 || B == Op0)) + if (match(Op1, m_Not(m_c_And(m_Specific(Op1), m_Value())))) return Constant::getAllOnesValue(Op0->getType()); + Value *A, *B; // (A & ~B) | (A ^ B) -> (A ^ B) // (~B & A) | (A ^ B) -> (A ^ B) // (A & ~B) | (B ^ A) -> (B ^ A) |