diff options
| -rw-r--r-- | llvm/lib/Analysis/InstructionSimplify.cpp | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/llvm/lib/Analysis/InstructionSimplify.cpp b/llvm/lib/Analysis/InstructionSimplify.cpp index dace55a1c09..29c0d0afe31 100644 --- a/llvm/lib/Analysis/InstructionSimplify.cpp +++ b/llvm/lib/Analysis/InstructionSimplify.cpp @@ -565,10 +565,8 @@ static Value *SimplifyAddInst(Value *Op0, Value *Op1, bool isNSW, bool isNUW, // add nsw/nuw (xor Y, signbit), signbit --> Y // The no-wrapping add guarantees that the top bit will be set by the add. // Therefore, the xor must be clearing the already set sign bit of Y. - Constant *SignBit = - ConstantInt::get(Ty, APInt::getSignBit(Ty->getScalarSizeInBits())); - if ((isNSW || isNUW) && match(Op1, m_Specific(SignBit)) && - match(Op0, m_Xor(m_Value(Y), m_Specific(SignBit)))) + if ((isNSW || isNUW) && match(Op1, m_SignBit()) && + match(Op0, m_Xor(m_Value(Y), m_SignBit()))) return Y; /// i1 add -> xor. |
