501     bool IsUnknown() const {  in IsUnknown()  function in art::LSEVisitor::Value
654     DCHECK(replacement.IsUnknown() || replacement.IsInstruction());  in Replacement()
655     DCHECK(replacement.IsUnknown() ||  in Replacement()
1042       if (stored_by->IsUnknown()) {  in VisitDeoptimize()
1407     return !IsUnknown();  in Equals()
1505   if (pre_header_value.IsUnknown()) {  in PrepareLoopValue()
1584     } else if (pred_value.IsUnknown() || merged_value.IsUnknown()) {  in MergePredecessorValues()
1639       if ((!stored_by.IsUnknown() || !merged_stored_by.IsUnknown()) &&  in MergePredecessorRecords()
1752   DCHECK(record.value.IsUnknown() || record.value.Equals(ReplacementOrValue(record.value)));  in VisitGetLocation()
1770   } else if (record.value.IsUnknown()) {  in VisitGetLocation()
1848         heap_values[i].value.IsUnknown() ||  in VisitSetLocation()
2103       if (value.IsUnknown()) {  in FindLoopPhisToMaterialize()
2114               !heap_values[i].stored_by.IsUnknown() &&  in FindLoopPhisToMaterialize()
2472     DCHECK(value.IsUnknown() || ReplacementOrValue(value).Equals(value));  in ProcessLoopPhiWithUnknownInput()
2521               replacement.IsUnknown() ? stored_value : replacement.GetInstruction());  in ProcessLoopPhiWithUnknownInput()
2529           if (local_heap_values[idx].IsUnknown()) {  in ProcessLoopPhiWithUnknownInput()
2566         if (heap_values[idx].value.IsUnknown()) {  in ProcessLoopPhiWithUnknownInput()
2604     DCHECK(record.value.IsUnknown() || record.value.IsInstruction() || record.value.NeedsLoopPhi());  in ProcessLoadsRequiringLoopPhis()
2654         if (!stored_by.IsUnknown() && (i == idx || MayAliasOnBackEdge(block, idx, i))) {  in SearchPhiPlaceholdersForKeptStores()
2748   DCHECK_EQ(phi_placeholder_replacements_[PhiPlaceholderIndex(phi_placeholder)].IsUnknown(),  in FindOldValueForPhiPlaceholder()
2810     if (!phi_placeholder_replacements_[i].IsUnknown() &&  in FindStoresWritingOldValues()