// Iterate `it` to the next instruction
inline void _next(std::vector<bh_view>::const_iterator &it) {
assert(it != end);
while (++it != end and it->isConstant()) {}
}
// Deference the iterator
const bh_base *dereference() const {
assert(cur != end);
assert(not cur->isConstant());
return cur->base;
}