return BO;
}
- if (match(Op1, m_Shl(m_Power2(), m_Value()))) {
+ if (isKnownToBeAPowerOfTwo(Op1, /*OrZero*/true, 0, AT, &I, DT)) {
// X sdiv (1 << Y) -> X udiv (1 << Y) ( -> X u>> Y)
// Safe because the only negative value (1 << Y) can take on is
// INT_MIN, and X sdiv INT_MIN == X udiv INT_MIN == 0 if X doesn't have
// the sign bit set.
- return BinaryOperator::CreateUDiv(Op0, Op1, I.getName());
+ auto *BO = BinaryOperator::CreateUDiv(Op0, Op1, I.getName());
+ BO->setIsExact(I.isExact());
+ return BO;
}
}
}