void LoopFinder::compute_loop_exits_and_entries(LoopList* loops) {
// create loop exits for each loop
int loop_index = loops->length() - 1;
for (; loop_index >= 0; loop_index--) {
Loop* loop = loops->at(loop_index);
int n = loop->nof_blocks() - 1;
// mark all nodes belonging to this loop
for (; n >= 0; n --) {
BlockBegin* bb = loop->block_no(n);
bb->set_loop_index(loop_index);
}
find_loop_entries(loop->start(), loop);
// search for blocks that have successors outside the loop
n = loop->nof_blocks() - 1;
for (; n >= 0; n--) {
BlockBegin* bb = loop->block_no(n);
find_loop_exits(bb, loop);
}
}
}
