285       if (first_range_->GetEnd() == first_use_->GetPosition()) {
286         first_range_->end_ = position;
306     if (first_range_ == nullptr) {
308       first_range_ = last_range_ = range_search_start_ =
310     } else if (first_range_->GetStart() == start_block_position) {
315       DCHECK_LE(position, first_range_->GetEnd());
317       DCHECK(first_range_->GetStart() > position);
324       first_range_ = range_search_start_ =
325           new (allocator_) LiveRange(start_block_position, position, first_range_);
339     if (first_range_ == nullptr) {  in AddRange()
340       first_range_ = last_range_ = range_search_start_ =  in AddRange()
341           new (allocator_) LiveRange(start, end, first_range_);  in AddRange()
342     } else if (first_range_->GetStart() == end) {  in AddRange()
344       first_range_->start_ = start;  in AddRange()
345     } else if (first_range_->GetStart() == start && first_range_->GetEnd() == end) {  in AddRange()
348       DCHECK_GT(first_range_->GetStart(), end);  in AddRange()
350       first_range_ = range_search_start_ = new (allocator_) LiveRange(start, end, first_range_);  in AddRange()
355     DCHECK(first_range_ != nullptr);  in AddLoopRange()
356     DCHECK_LE(start, first_range_->GetStart());  in AddLoopRange()
358     LiveRange* after_loop = first_range_;  in AddLoopRange()
367       first_range_ = last_range_ = range_search_start_ =  in AddLoopRange()
370       first_range_ = range_search_start_ = after_loop;  in AddLoopRange()
372       first_range_->start_ = start;  in AddLoopRange()
376       first_range_ = range_search_start_ = last_in_loop;  in AddLoopRange()
377       first_range_->start_ = start;  in AddLoopRange()
378       first_range_->end_ = end;  in AddLoopRange()
391     if (first_range_ != nullptr) {  in SetFrom()
392       first_range_->start_ = from;  in SetFrom()
397       first_range_ = last_range_ = range_search_start_ =  in SetFrom()
408   LiveRange* GetFirstRange() const { return first_range_; }  in GetFirstRange()
436     LiveRange* candidate = FindRangeAtOrAfter(position, first_range_);  in CoversSlow()
446     LiveRange* other_range = current->first_range_;  in FirstIntersectionWith()
473     return first_range_->GetStart();  in GetStart()
591     LiveRange* current = first_range_;  in SplitAt()
605         DCHECK(current != first_range_);  in SplitAt()
609         new_interval->first_range_ = current;  in SplitAt()
615         new_interval->range_search_start_ = new_interval->first_range_;  in SplitAt()
627           first_range_ = last_range_;  in SplitAt()
629         new_interval->first_range_ = current;  in SplitAt()
636         new_interval->range_search_start_ = new_interval->first_range_;  in SplitAt()
655     LiveRange* current = first_range_;  in Dump()
768     if (first_range_ != nullptr) {
769       high_or_low_interval_->first_range_ = first_range_->Dup(allocator_);
770       high_or_low_interval_->last_range_ = high_or_low_interval_->first_range_->GetLastRange();
771       high_or_low_interval_->range_search_start_ = high_or_low_interval_->first_range_;
858     range_search_start_ = first_range_;  in ResetSearchCache()
871         first_range_(nullptr),  in allocator_()
895       if (search_start != first_range_) {  in FindRangeAtOrAfter()
901           DCHECK_EQ(search_start, FindRangeAtOrAfter(position, first_range_));  in FindRangeAtOrAfter()
1020   LiveRange* first_range_;  variable