-bool LiveIntervalUnion::Query::checkLoopInterference(MachineLoopRange *Loop) {
- // VirtReg is likely live throughout the loop, so start by checking LIU-Loop
- // overlaps.
- IntervalMapOverlaps<LiveIntervalUnion::Map, MachineLoopRange::Map>
- Overlaps(LiveUnion->getMap(), Loop->getMap());
- if (!Overlaps.valid())
- return false;
-
- // The loop is overlapping an LIU assignment. Check VirtReg as well.
- LiveInterval::iterator VRI = VirtReg->find(Overlaps.start());
+void LiveIntervalUnion::Array::init(LiveIntervalUnion::Allocator &Alloc,
+ unsigned NSize) {
+ // Reuse existing allocation.
+ if (NSize == Size)
+ return;
+ clear();
+ Size = NSize;
+ LIUs = static_cast<LiveIntervalUnion*>(
+ malloc(sizeof(LiveIntervalUnion)*NSize));
+ for (unsigned i = 0; i != Size; ++i)
+ new(LIUs + i) LiveIntervalUnion(Alloc);
+}