735 Instruction* InstructionSequence::GetBlockStart(RpoNumber rpo) const {  in GetBlockStart()
736   const InstructionBlock* block = InstructionBlockAt(rpo);  in GetBlockStart()
741 void InstructionSequence::StartBlock(RpoNumber rpo) {  in StartBlock()  argument
743   current_block_ = InstructionBlockAt(rpo);  in StartBlock()
749 void InstructionSequence::EndBlock(RpoNumber rpo) {  in EndBlock()  argument
751   DCHECK_EQ(current_block_->rpo_number(), rpo);  in EndBlock()
887   RpoNumber rpo = RpoNumber::FromInt(block_id);  in PrintBlock()  local
888   const InstructionBlock* block = InstructionBlockAt(rpo);  in PrintBlock()
889   CHECK(block->rpo_number() == rpo);  in PrintBlock()
1002 std::ostream& operator<<(std::ostream& os, const RpoNumber& rpo) {  in operator <<()  argument
1003   return os << rpo.ToSize();  in operator <<()