212     if (input->IsSymbol()) {  in ConvertToNumberOrNumeric()
280   if (key->IsSymbol()) return key;  in ConvertToPropertyKey()
304     if (input->IsSymbol()) {  in ConvertToString()
389   } else if (input->IsSymbol()) {  in NoSideEffectsToString()
667     } else if (x->IsSymbol()) {  in Equals()
668       if (y->IsSymbol()) {  in Equals()
725   if (object->IsSymbol()) return isolate->factory()->symbol_string();  in TypeOf()
1822   DCHECK_IMPLIES(!it->IsElement() && it->name()->IsSymbol(),  in GetPropertyAttributesWithInterceptorInternal()
1979   if (name->IsSymbol() && Symbol::cast(*name)->is_well_known_symbol()) {  in GetPropertyWithFailedAccessCheck()
3729     if (value->IsSymbol()) return roots.Symbol_string();  in class_name()
7707   if (key->IsSymbol() && Handle<Symbol>::cast(key)->IsPrivate()) {  in DefineOwnProperty()
17989     if (key->IsSymbol()) continue;  in CopyEnumKeysTo()
18099     if (key->IsSymbol()) {  in CollectKeysTo()
18109       if (!key->IsSymbol()) continue;  in CollectKeysTo()
18319   DCHECK(key->IsJSReceiver() || key->IsSymbol());  in Set()
18336   DCHECK(key->IsJSReceiver() || key->IsSymbol());  in Delete()