std::unique_ptr<Expression> divide(Expression *dividend, SignedConstantValue divisor) {
assert(divisor != 0);
if (auto constant = dividend->as<IntegerConstant>()) {
if (constant->value().signedValue() % divisor == 0) {
return std::make_unique<IntegerConstant>(
SizedValue(constant->value().size(), constant->value().signedValue() / divisor),
constant->type());
}
} else if (auto binary = dividend->as<BinaryOperator>()) {
if (binary->operatorKind() == BinaryOperator::MUL) {
if (auto result = divide(binary->left().get(), divisor)) {
return std::make_unique<BinaryOperator>(BinaryOperator::MUL, std::move(result),
std::move(binary->right()));
} else if (auto result = divide(binary->right().get(), divisor)) {
return std::make_unique<BinaryOperator>(BinaryOperator::MUL, std::move(binary->left()),
std::move(result));
}
}
}
return nullptr;
}
IntegerConstant::IntegerConstant(ConstantValue value, const IntegerType *type):
Expression(INTEGER_CONSTANT), value_(SizedValue(type->size(), value)), type_(type)
{}
