NewCst = getLogBase2Vector(CV);
if (NewCst) {
+ unsigned Width = NewCst->getType()->getPrimitiveSizeInBits();
BinaryOperator *Shl = BinaryOperator::CreateShl(NewOp, NewCst);
if (I.hasNoUnsignedWrap())
Shl->setHasNoUnsignedWrap();
- if (I.hasNoSignedWrap() && NewCst->isNotMinSignedValue())
- Shl->setHasNoSignedWrap();
+ if (I.hasNoSignedWrap()) {
+ uint64_t V;
+ if (match(NewCst, m_ConstantInt(V)) && V != Width - 1)
+ Shl->setHasNoSignedWrap();
+ }
return Shl;
}