diff options
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp index 7204bf51768..ed6386cd689 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp @@ -991,8 +991,9 @@ static Instruction *foldAddWithConstant(BinaryOperator &Add, // Shifts and add used to flip and mask off the low bit: // add (ashr (shl i32 X, 31), 31), 1 --> and (not X), 1 const APInt *C3; - if (*C == 1 && match(Op0, m_OneUse(m_AShr(m_Shl(m_Value(X), m_APInt(C2)), - m_APInt(C3)))) && + if (C->isOneValue() && + match(Op0, + m_OneUse(m_AShr(m_Shl(m_Value(X), m_APInt(C2)), m_APInt(C3)))) && C2 == C3 && *C2 == Ty->getScalarSizeInBits() - 1) { Value *NotX = Builder.CreateNot(X); return BinaryOperator::CreateAnd(NotX, ConstantInt::get(Ty, 1)); @@ -1554,7 +1555,7 @@ Instruction *InstCombiner::visitSub(BinaryOperator &I) { // -(X >>u 31) -> (X >>s 31) // -(X >>s 31) -> (X >>u 31) - if (*Op0C == 0) { + if (Op0C->isNullValue()) { Value *X; const APInt *ShAmt; if (match(Op1, m_LShr(m_Value(X), m_APInt(ShAmt))) && |
