241   for (const Use* use = first_use_; use; use = use->next) {  in UseCount()
249   DCHECK(this->first_use_ == nullptr || this->first_use_->prev == nullptr);  in ReplaceUses()
250   DCHECK(that->first_use_ == nullptr || that->first_use_->prev == nullptr);  in ReplaceUses()
254   for (Use* use = this->first_use_; use; use = use->next) {  in ReplaceUses()
260     last_use->next = that->first_use_;  in ReplaceUses()
261     if (that->first_use_) that->first_use_->prev = last_use;  in ReplaceUses()
262     that->first_use_ = this->first_use_;  in ReplaceUses()
264   first_use_ = nullptr;  in ReplaceUses()
270   for (Use* use = first_use_; use; use = use->next) {  in OwnedBy()
296       first_use_(nullptr) {  in Node()
304   DCHECK(first_use_ == nullptr || first_use_->prev == nullptr);  in AppendUse()
306   use->next = first_use_;  in AppendUse()
308   if (first_use_) first_use_->prev = use;  in AppendUse()
309   first_use_ = use;  in AppendUse()
314   DCHECK(first_use_ == nullptr || first_use_->prev == nullptr);  in RemoveUse()
316     DCHECK_NE(first_use_, use);  in RemoveUse()
319     DCHECK_EQ(first_use_, use);  in RemoveUse()
320     first_use_ = use->next;  in RemoveUse()