/// Construct based on a block
explicit LocalInstrList(const std::vector<Block> &block_list) : cur(block_list.begin()), end(block_list.end()) {
if (cur != end) {
if (not cur->isInstr()) {
increment(); // Get to the first instruction
}
}
}
// Deference the iterator
InstrPtr const &dereference() const {
assert(cur != end);
assert(cur->isInstr());
return cur->getInstr();
}
// Increase iterator
void increment() {
assert(cur != end);
while(++cur != end and not cur->isInstr()) {}
}