49 class Interval {
51   Interval() : from_(kNone), to_(kNone - 1) {}  // '- 1' for branchless size().  in Interval()  function
52   Interval(int from, int to) : from_(from), to_(to) {}  in Interval()  function
53   Interval Union(Interval that) {  in Union()
56     return Interval(std::min(from_, that.from_), std::max(to_, that.to_));  in Union()
59   static Interval Empty() { return Interval(); }  in Empty()
174   virtual Interval CaptureRegisters() { return Interval::Empty(); }  in CaptureRegisters()
191   Interval CaptureRegisters() override;
214   Interval CaptureRegisters() override;
431   Interval CaptureRegisters() override;
467   Interval CaptureRegisters() override;
503   Interval CaptureRegisters() override { return body_->CaptureRegisters(); }  in CaptureRegisters()
526   Interval CaptureRegisters() override;