37   SegmentIter SegPos = Segments.find(RegPos->start);  in unify()  local
39   while (SegPos.valid()) {  in unify()
40     SegPos.insert(RegPos->start, RegPos->end, &VirtReg);  in unify()
43     SegPos.advanceTo(RegPos->start);  in unify()
50   SegPos.insert(RegEnd->start, RegEnd->end, &VirtReg);  in unify()
51   for (; RegPos != RegEnd; ++RegPos, ++SegPos)  in unify()
52     SegPos.insert(RegPos->start, RegPos->end, &VirtReg);  in unify()
65   SegmentIter SegPos = Segments.find(RegPos->start);  in extract()  local
68     assert(SegPos.value() == &VirtReg && "Inconsistent LiveInterval");  in extract()
69     SegPos.erase();  in extract()
70     if (!SegPos.valid())  in extract()
74     RegPos = Range.advanceTo(RegPos, SegPos.start());  in extract()
78     SegPos.advanceTo(RegPos->start);  in extract()