884 Instruction* InstructionSequence::GetBlockStart(RpoNumber rpo) const {  in GetBlockStart()
885   const InstructionBlock* block = InstructionBlockAt(rpo);  in GetBlockStart()
889 void InstructionSequence::StartBlock(RpoNumber rpo) {  in StartBlock()  argument
891   current_block_ = InstructionBlockAt(rpo);  in StartBlock()
896 void InstructionSequence::EndBlock(RpoNumber rpo) {  in EndBlock()  argument
898   DCHECK_EQ(current_block_->rpo_number(), rpo);  in EndBlock()
1016   RpoNumber rpo = RpoNumber::FromInt(block_id);  in PrintBlock()  local
1017   const InstructionBlock* block = InstructionBlockAt(rpo);  in PrintBlock()
1018   CHECK(block->rpo_number() == rpo);  in PrintBlock()
1187 std::ostream& operator<<(std::ostream& os, const RpoNumber& rpo) {  in operator <<()  argument
1188   return os << rpo.ToSize();  in operator <<()