82       HPhi* phi = block->phis()->at(j);  in MarkLiveInstructions()  local
83       if (phi->CannotBeEliminated()) MarkLive(phi, &worklist);  in MarkLiveInstructions()
109       HPhi* phi = block->phis()->at(j);  in RemoveDeadInstructions()  local
110       if (!phi->CheckFlag(HValue::kIsLive)) {  in RemoveDeadInstructions()
111         worklist.Add(phi, zone());  in RemoveDeadInstructions()
113         phi->ClearFlag(HValue::kIsLive);  in RemoveDeadInstructions()
120     HPhi* phi = worklist.RemoveLast();  in RemoveDeadInstructions()  local
121     HBasicBlock* block = phi->block();  in RemoveDeadInstructions()
122     phi->DeleteAndReplaceWith(NULL);  in RemoveDeadInstructions()
123     if (phi->HasMergedIndex()) {  in RemoveDeadInstructions()
124       block->RecordDeletedPhi(phi->merged_index());  in RemoveDeadInstructions()