86   UseInterval* current_interval = first_interval_;  in HasOverlap()
108       first_interval_(NULL),  in LiveRange()
230   if (current_interval_ == NULL) return first_interval_;  in FirstSearchIntervalForPosition()
233     return first_interval_;  in FirstSearchIntervalForPosition()
268     current = first_interval_;  in SplitAt()
290   result->first_interval_ = after;  in SplitAt()
360   DCHECK(first_interval_ != NULL);  in ShortenTo()
361   DCHECK(first_interval_->start().Value() <= start.Value());  in ShortenTo()
362   DCHECK(start.Value() < first_interval_->end().Value());  in ShortenTo()
363   first_interval_->set_start(start);  in ShortenTo()
375   while (first_interval_ != NULL &&  in EnsureInterval()
376          first_interval_->start().Value() <= end.Value()) {  in EnsureInterval()
377     if (first_interval_->end().Value() > end.Value()) {  in EnsureInterval()
378       new_end = first_interval_->end();  in EnsureInterval()
380     first_interval_ = first_interval_->next();  in EnsureInterval()
384   new_interval->next_ = first_interval_;  in EnsureInterval()
385   first_interval_ = new_interval;  in EnsureInterval()
399   if (first_interval_ == NULL) {  in AddUseInterval()
401     first_interval_ = interval;  in AddUseInterval()
404     if (end.Value() == first_interval_->start().Value()) {  in AddUseInterval()
405       first_interval_->set_start(start);  in AddUseInterval()
406     } else if (end.Value() < first_interval_->start().Value()) {  in AddUseInterval()
408       interval->set_next(first_interval_);  in AddUseInterval()
409       first_interval_ = interval;  in AddUseInterval()
414       DCHECK(start.Value() < first_interval_->end().Value());  in AddUseInterval()
415       first_interval_->start_ = Min(start, first_interval_->start_);  in AddUseInterval()
416       first_interval_->end_ = Max(end, first_interval_->end_);  in AddUseInterval()