MachineLoopRange::MachineLoopRange(const MachineLoop *loop,
MachineLoopRange::Allocator &alloc,
SlotIndexes &Indexes)
- : Loop(loop), Intervals(alloc) {
+ : Loop(loop), Intervals(alloc), Area(0) {
// Compute loop coverage.
for (MachineLoop::block_iterator I = Loop->block_begin(),
E = Loop->block_end(); I != E; ++I) {
const std::pair<SlotIndex, SlotIndex> &Range = Indexes.getMBBRange(*I);
Intervals.insert(Range.first, Range.second, 1u);
+ Area += Range.first.distance(Range.second);
}
}
/// overlaps - Return true if this loop overlaps the given range of machine
/// instructions.
bool MachineLoopRange::overlaps(SlotIndex Start, SlotIndex Stop) {
- RangeMap::const_iterator I = Intervals.find(Start);
+ Map::const_iterator I = Intervals.find(Start);
return I.valid() && Stop > I.start();
}
+unsigned MachineLoopRange::getNumber() const {
+ return Loop->getHeader()->getNumber();
+}
+
+/// byNumber - Comparator for array_pod_sort that sorts a list of
+/// MachineLoopRange pointers by number.
+int MachineLoopRange::byNumber(const void *pa, const void *pb) {
+ const MachineLoopRange *a = *static_cast<MachineLoopRange *const *>(pa);
+ const MachineLoopRange *b = *static_cast<MachineLoopRange *const *>(pb);
+ unsigned na = a->getNumber();
+ unsigned nb = b->getNumber();
+ if (na < nb)
+ return -1;
+ if (na > nb)
+ return 1;
+ return 0;
+}
+
+/// byAreaDesc - Comparator for array_pod_sort that sorts a list of
+/// MachineLoopRange pointers by:
+/// 1. Descending area.
+/// 2. Ascending number.
+int MachineLoopRange::byAreaDesc(const void *pa, const void *pb) {
+ const MachineLoopRange *a = *static_cast<MachineLoopRange *const *>(pa);
+ const MachineLoopRange *b = *static_cast<MachineLoopRange *const *>(pb);
+ if (a->getArea() != b->getArea())
+ return a->getArea() > b->getArea() ? -1 : 1;
+ return byNumber(pa, pb);
+}
+
void MachineLoopRange::print(raw_ostream &OS) const {
- OS << "Loop#" << Loop->getHeader()->getNumber() << " =";
- for (RangeMap::const_iterator I = Intervals.begin(); I.valid(); ++I)
+ OS << "Loop#" << getNumber() << " =";
+ for (Map::const_iterator I = Intervals.begin(); I.valid(); ++I)
OS << " [" << I.start() << ';' << I.stop() << ')';
}