957 class RpoNumber final {
969   static RpoNumber FromInt(int index) { return RpoNumber(index); }  in FromInt()
970   static RpoNumber Invalid() { return RpoNumber(kInvalidRpoNumber); }  in Invalid()
972   bool IsNext(const RpoNumber other) const {  in IsNext()
978   bool operator==(RpoNumber other) const { return index_ == other.index_; }
979   bool operator!=(RpoNumber other) const { return index_ != other.index_; }
980   bool operator>(RpoNumber other) const { return index_ > other.index_; }
981   bool operator<(RpoNumber other) const { return index_ < other.index_; }
982   bool operator<=(RpoNumber other) const { return index_ <= other.index_; }
983   bool operator>=(RpoNumber other) const { return index_ >= other.index_; }
986   explicit RpoNumber(int32_t index) : index_(index) {}  in RpoNumber()  function
991 std::ostream& operator<<(std::ostream&, const RpoNumber&);
1014   explicit Constant(RpoNumber rpo) : type_(kRpoNumber), value_(rpo.ToInt()) {}  in Constant()
1050   RpoNumber ToRpoNumber() const {  in ToRpoNumber()
1052     return RpoNumber::FromInt(static_cast<int>(value_));  in ToRpoNumber()
1195   InstructionBlock(Zone* zone, RpoNumber rpo_number, RpoNumber loop_header,
1196                    RpoNumber loop_end, bool deferred, bool handler);
1221   RpoNumber ao_number() const { return ao_number_; }  in ao_number()
1222   RpoNumber rpo_number() const { return rpo_number_; }  in rpo_number()
1223   RpoNumber loop_header() const { return loop_header_; }  in loop_header()
1224   RpoNumber loop_end() const {  in loop_end()
1230   typedef ZoneVector<RpoNumber> Predecessors;
1234   size_t PredecessorIndexOf(RpoNumber rpo_number) const;
1236   typedef ZoneVector<RpoNumber> Successors;
1245   void set_ao_number(RpoNumber ao_number) { ao_number_ = ao_number; }  in set_ao_number()
1256   void set_last_deferred(RpoNumber last) { last_deferred_ = last; }  in set_last_deferred()
1257   RpoNumber last_deferred() const { return last_deferred_; }  in last_deferred()
1263   RpoNumber ao_number_;  // Assembly order number.
1264   const RpoNumber rpo_number_;
1265   const RpoNumber loop_header_;
1266   const RpoNumber loop_end_;
1274   RpoNumber last_deferred_;
1313   InstructionBlock* InstructionBlockAt(RpoNumber rpo_number) {  in InstructionBlockAt()
1322   const InstructionBlock* InstructionBlockAt(RpoNumber rpo_number) const {  in InstructionBlockAt()
1350   Instruction* GetBlockStart(RpoNumber rpo) const;
1372   void StartBlock(RpoNumber rpo);
1373   void EndBlock(RpoNumber rpo);
1435   RpoNumber InputRpo(Instruction* instr, size_t index);