37   explicit CommonDominator(HBasicBlock* block)  in CommonDominator()  argument
38       : dominator_(block), chain_length_(ChainLength(block)) {  in CommonDominator()
42   void Update(HBasicBlock* block) {  in Update()  argument
43     DCHECK(block != nullptr);  in Update()
45       dominator_ = block;  in Update()
46       chain_length_ = ChainLength(block);  in Update()
51     if (block == block2) {  in Update()
54     size_t chain_length = ChainLength(block);  in Update()
58       block = block->GetDominator();  in Update()
59       DCHECK(block != nullptr);  in Update()
66     while (block != block2) {  in Update()
68       block = block->GetDominator();  in Update()
69       DCHECK(block != nullptr);  in Update()
73     dominator_ = block;  in Update()
82   static size_t ChainLength(HBasicBlock* block) {  in ChainLength()  argument
84     while (block != nullptr) {  in ChainLength()
86       block = block->GetDominator();  in ChainLength()