// Merge a LiveInterval's segments. Guarantee no overlaps.
-void LiveIntervalUnion::unify(LiveInterval &VirtReg) {
- if (VirtReg.empty())
+void LiveIntervalUnion::unify(LiveInterval &VirtReg, const LiveRange &Range) {
+ if (Range.empty())
return;
++Tag;
// Insert each of the virtual register's live segments into the map.
- LiveInterval::iterator RegPos = VirtReg.begin();
- LiveInterval::iterator RegEnd = VirtReg.end();
+ LiveRange::const_iterator RegPos = Range.begin();
+ LiveRange::const_iterator RegEnd = Range.end();
SegmentIter SegPos = Segments.find(RegPos->start);
while (SegPos.valid()) {
}
// Remove a live virtual register's segments from this union.
-void LiveIntervalUnion::extract(LiveInterval &VirtReg) {
- if (VirtReg.empty())
+void LiveIntervalUnion::extract(LiveInterval &VirtReg, const LiveRange &Range) {
+ if (Range.empty())
return;
++Tag;
// Remove each of the virtual register's live segments from the map.
- LiveInterval::iterator RegPos = VirtReg.begin();
- LiveInterval::iterator RegEnd = VirtReg.end();
+ LiveRange::const_iterator RegPos = Range.begin();
+ LiveRange::const_iterator RegEnd = Range.end();
SegmentIter SegPos = Segments.find(RegPos->start);
for (;;) {
return;
// Skip all segments that may have been coalesced.
- RegPos = VirtReg.advanceTo(RegPos, SegPos.start());
+ RegPos = Range.advanceTo(RegPos, SegPos.start());
if (RegPos == RegEnd)
return;