Revert "[heap] Move even more objects into RO_SPACE"

This reverts commit b19d123f.

Reason for revert: It breaks the more important change: https://chromium-review.googlesource.com/c/v8/v8/+/1042145
(Because it adds mutable objects to RO_SPACE).

Original change's description:
> [heap] Move even more objects into RO_SPACE
> 
> Moves all Oddballs, empty_feedback_metadata, lots of symbols and
> immortal heap numbers and several other empty collection objects.
> 
>       RO_SPACE  NEW_SPACE  OLD_SPACE  CODE_SPACE  MAP_SPACE  LO_SPACE
> old      31592          0     221160       33280        176         0
> new      35016          0     217736       33280        176         0
> diff     +3424                 -3424
> 
> Bug: v8:7464
> Change-Id: Ic99411bcbcb9c9a48b33c59dddb68359278fb0b3
> Reviewed-on: https://chromium-review.googlesource.com/1025996
> Commit-Queue: Dan Elphick <delphick@chromium.org>
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#53053}

TBR=hpayer@chromium.org,mlippautz@chromium.org,delphick@chromium.org

Change-Id: Ieb81f88fe348fcffb67c153c0b116670318814f5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7464
Reviewed-on: https://chromium-review.googlesource.com/1049555Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53056}

src/heap/factory.cc

@@ -177,17 +177,16 @@ Handle<TemplateObjectDescription> Factory::NewTemplateObjectDescription(
 
 Handle<Oddball> Factory::NewOddball(Handle<Map> map, const char* to_string,
                                     Handle<Object> to_number,
-                                    const char* type_of, byte kind,
-                                    PretenureFlag pretenure) {
-  Handle<Oddball> oddball(Oddball::cast(New(map, pretenure)), isolate());
+                                    const char* type_of, byte kind) {
+  Handle<Oddball> oddball(Oddball::cast(New(map, TENURED)), isolate());
   Oddball::Initialize(isolate(), oddball, to_string, to_number, type_of, kind);
   return oddball;
 }
 
-Handle<Oddball> Factory::NewSelfReferenceMarker(PretenureFlag pretenure) {
+Handle<Oddball> Factory::NewSelfReferenceMarker() {
   return NewOddball(self_reference_marker_map(), "self_reference_marker",
                     handle(Smi::FromInt(-1), isolate()), "undefined",
-                    Oddball::kSelfReferenceMarker, pretenure);
+                    Oddball::kSelfReferenceMarker);
 }
 
 Handle<PropertyArray> Factory::NewPropertyArray(int length,
@@ -402,12 +401,11 @@ Handle<FixedArrayBase> Factory::NewFixedDoubleArrayWithHoles(
   return array;
 }
 
-Handle<FeedbackMetadata> Factory::NewFeedbackMetadata(int slot_count,
-                                                      PretenureFlag tenure) {
+Handle<FeedbackMetadata> Factory::NewFeedbackMetadata(int slot_count) {
   DCHECK_LE(0, slot_count);
   int size = FeedbackMetadata::SizeFor(slot_count);
   HeapObject* result =
-      AllocateRawWithImmortalMap(size, tenure, *feedback_metadata_map());
+      AllocateRawWithImmortalMap(size, TENURED, *feedback_metadata_map());
   Handle<FeedbackMetadata> data(FeedbackMetadata::cast(result), isolate());
   data->set_slot_count(slot_count);
 
@@ -1228,13 +1226,12 @@ Handle<JSStringIterator> Factory::NewJSStringIterator(Handle<String> string) {
   return iterator;
 }
 
-Handle<Symbol> Factory::NewSymbol(PretenureFlag flag) {
-  DCHECK(flag != NOT_TENURED);
+Handle<Symbol> Factory::NewSymbol() {
   // Statically ensure that it is safe to allocate symbols in paged spaces.
   STATIC_ASSERT(Symbol::kSize <= kMaxRegularHeapObjectSize);
 
   HeapObject* result =
-      AllocateRawWithImmortalMap(Symbol::kSize, flag, *symbol_map());
+      AllocateRawWithImmortalMap(Symbol::kSize, TENURED, *symbol_map());
 
   // Generate a random hash value.
   int hash = isolate()->GenerateIdentityHash(Name::kHashBitMask);
@@ -1248,9 +1245,8 @@ Handle<Symbol> Factory::NewSymbol(PretenureFlag flag) {
   return symbol;
 }
 
-Handle<Symbol> Factory::NewPrivateSymbol(PretenureFlag flag) {
-  DCHECK(flag != NOT_TENURED);
-  Handle<Symbol> symbol = NewSymbol(flag);
+Handle<Symbol> Factory::NewPrivateSymbol() {
+  Handle<Symbol> symbol = NewSymbol();
   symbol->set_is_private(true);
   return symbol;
 }
@@ -1430,11 +1426,10 @@ Handle<AccessorInfo> Factory::NewAccessorInfo() {
   return info;
 }
 
-Handle<Script> Factory::NewScript(Handle<String> source, PretenureFlag tenure) {
-  DCHECK(tenure == TENURED || tenure == TENURED_READ_ONLY);
+Handle<Script> Factory::NewScript(Handle<String> source) {
   // Create and initialize script object.
   Heap* heap = isolate()->heap();
-  Handle<Script> script = Handle<Script>::cast(NewStruct(SCRIPT_TYPE, tenure));
+  Handle<Script> script = Handle<Script>::cast(NewStruct(SCRIPT_TYPE, TENURED));
   script->set_source(*source);
   script->set_name(heap->undefined_value());
   script->set_id(isolate()->heap()->NextScriptId());
@@ -1621,12 +1616,11 @@ Handle<FeedbackCell> Factory::NewManyClosuresCell(Handle<HeapObject> value) {
   return cell;
 }
 
-Handle<PropertyCell> Factory::NewPropertyCell(Handle<Name> name,
-                                              PretenureFlag pretenure) {
+Handle<PropertyCell> Factory::NewPropertyCell(Handle<Name> name) {
   DCHECK(name->IsUniqueName());
   STATIC_ASSERT(PropertyCell::kSize <= kMaxRegularHeapObjectSize);
-  HeapObject* result = AllocateRawWithImmortalMap(
-      PropertyCell::kSize, pretenure, *global_property_cell_map());
+  HeapObject* result = AllocateRawWithImmortalMap(PropertyCell::kSize, TENURED,
+                                                  *global_property_cell_map());
   Handle<PropertyCell> cell(PropertyCell::cast(result), isolate());
   cell->set_dependent_code(DependentCode::cast(*empty_fixed_array()),
                            SKIP_WRITE_BARRIER);

src/heap/factory.h

@@ -88,11 +88,10 @@ class V8_EXPORT_PRIVATE Factory {
  public:
   Handle<Oddball> NewOddball(Handle<Map> map, const char* to_string,
                              Handle<Object> to_number, const char* type_of,
-                             byte kind,
-                             PretenureFlag pretenure = TENURED_READ_ONLY);
+                             byte kind);
 
   // Marks self references within code generation.
-  Handle<Oddball> NewSelfReferenceMarker(PretenureFlag pretenure = TENURED);
+  Handle<Oddball> NewSelfReferenceMarker();
 
   // Allocates a fixed array-like object with given map and initialized with
   // undefined values.
@@ -159,8 +158,7 @@ class V8_EXPORT_PRIVATE Factory {
       int size, PretenureFlag pretenure = NOT_TENURED);
 
   // Allocates a FeedbackMedata object and zeroes the data section.
-  Handle<FeedbackMetadata> NewFeedbackMetadata(int slot_count,
-                                               PretenureFlag tenure = TENURED);
+  Handle<FeedbackMetadata> NewFeedbackMetadata(int slot_count);
 
   Handle<FrameArray> NewFrameArray(int number_of_frames,
                                    PretenureFlag pretenure = NOT_TENURED);
@@ -348,9 +346,9 @@ class V8_EXPORT_PRIVATE Factory {
   Handle<ExternalOneByteString> NewNativeSourceString(
       const ExternalOneByteString::Resource* resource);
 
-  // Create a symbol in old or read-only space.
-  Handle<Symbol> NewSymbol(PretenureFlag pretenure = TENURED);
-  Handle<Symbol> NewPrivateSymbol(PretenureFlag pretenure = TENURED);
+  // Create a symbol in old space.
+  Handle<Symbol> NewSymbol();
+  Handle<Symbol> NewPrivateSymbol();
   Handle<Symbol> NewPrivateFieldSymbol();
 
   // Create a global (but otherwise uninitialized) context.
@@ -399,8 +397,7 @@ class V8_EXPORT_PRIVATE Factory {
 
   Handle<AccessorInfo> NewAccessorInfo();
 
-  Handle<Script> NewScript(Handle<String> source,
-                           PretenureFlag tenure = TENURED);
+  Handle<Script> NewScript(Handle<String> source);
 
   Handle<BreakPointInfo> NewBreakPointInfo(int source_position);
   Handle<BreakPoint> NewBreakPoint(int id, Handle<String> condition);
@@ -440,8 +437,7 @@ class V8_EXPORT_PRIVATE Factory {
 
   Handle<Cell> NewCell(Handle<Object> value);
 
-  Handle<PropertyCell> NewPropertyCell(Handle<Name> name,
-                                       PretenureFlag pretenure = TENURED);
+  Handle<PropertyCell> NewPropertyCell(Handle<Name> name);
 
   Handle<WeakCell> NewWeakCell(Handle<HeapObject> value,
                                PretenureFlag pretenure = TENURED);

src/heap/heap.h

@@ -2173,8 +2173,8 @@ class Heap {
   void FinalizePartialMap(Map* map);
 
   // Allocate empty fixed typed array of given type.
-  V8_WARN_UNUSED_RESULT AllocationResult
-  AllocateEmptyFixedTypedArray(ExternalArrayType array_type);
+  V8_WARN_UNUSED_RESULT AllocationResult AllocateEmptyFixedTypedArray(
+      ExternalArrayType array_type, AllocationSpace space = OLD_SPACE);
 
   void set_force_oom(bool value) { force_oom_ = value; }
 

src/heap/setup-heap-internal.cc

@@ -177,12 +177,12 @@ AllocationResult Heap::Allocate(Map* map, AllocationSpace space) {
 }
 
 AllocationResult Heap::AllocateEmptyFixedTypedArray(
-    ExternalArrayType array_type) {
+    ExternalArrayType array_type, AllocationSpace space) {
   int size = OBJECT_POINTER_ALIGN(FixedTypedArrayBase::kDataOffset);
 
   HeapObject* object = nullptr;
   AllocationResult allocation = AllocateRaw(
-      size, RO_SPACE,
+      size, space,
       array_type == kExternalFloat64Array ? kDoubleAligned : kWordAligned);
   if (!allocation.To(&object)) return allocation;
 
@@ -247,7 +247,7 @@ bool Heap::CreateInitialMaps() {
   set_empty_fixed_array(FixedArray::cast(obj));
 
   {
-    AllocationResult alloc = AllocateRaw(WeakFixedArray::SizeFor(0), RO_SPACE);
+    AllocationResult alloc = AllocateRaw(WeakFixedArray::SizeFor(0), OLD_SPACE);
     if (!alloc.To(&obj)) return false;
     obj->set_map_after_allocation(weak_fixed_array_map(), SKIP_WRITE_BARRIER);
     WeakFixedArray::cast(obj)->set_length(0);
@@ -256,7 +256,7 @@ bool Heap::CreateInitialMaps() {
 
   {
     AllocationResult allocation =
-        AllocateRaw(WeakArrayList::SizeForCapacity(0), RO_SPACE);
+        AllocateRaw(WeakArrayList::SizeForCapacity(0), OLD_SPACE);
     if (!allocation.To(&obj)) return false;
     obj->set_map_after_allocation(weak_array_list_map(), SKIP_WRITE_BARRIER);
     WeakArrayList::cast(obj)->set_capacity(0);
@@ -496,7 +496,7 @@ bool Heap::CreateInitialMaps() {
   }
 
   {
-    AllocationResult alloc = AllocateRaw(FixedArray::SizeFor(0), RO_SPACE);
+    AllocationResult alloc = AllocateRaw(FixedArray::SizeFor(0), OLD_SPACE);
     if (!alloc.To(&obj)) return false;
     obj->set_map_after_allocation(scope_info_map(), SKIP_WRITE_BARRIER);
     FixedArray::cast(obj)->set_length(0);
@@ -504,7 +504,7 @@ bool Heap::CreateInitialMaps() {
   set_empty_scope_info(ScopeInfo::cast(obj));
 
   {
-    AllocationResult alloc = AllocateRaw(FixedArray::SizeFor(0), RO_SPACE);
+    AllocationResult alloc = AllocateRaw(FixedArray::SizeFor(0), OLD_SPACE);
     if (!alloc.To(&obj)) return false;
     obj->set_map_after_allocation(boilerplate_description_map(),
                                   SKIP_WRITE_BARRIER);
@@ -535,7 +535,7 @@ bool Heap::CreateInitialMaps() {
   }
 
   {
-    if (!AllocateRaw(FixedArray::SizeFor(0), RO_SPACE).To(&obj)) {
+    if (!AllocateRaw(FixedArray::SizeFor(0), OLD_SPACE).To(&obj)) {
       return false;
     }
     obj->set_map_after_allocation(property_array_map(), SKIP_WRITE_BARRIER);
@@ -565,7 +565,7 @@ void Heap::CreateApiObjects() {
   set_message_listeners(*TemplateList::New(isolate, 2));
 
   Handle<InterceptorInfo> info = Handle<InterceptorInfo>::cast(
-      isolate->factory()->NewStruct(INTERCEPTOR_INFO_TYPE, TENURED_READ_ONLY));
+      isolate->factory()->NewStruct(INTERCEPTOR_INFO_TYPE, TENURED));
   info->set_flags(0);
   set_noop_interceptor_info(*info);
 }
@@ -575,18 +575,16 @@ void Heap::CreateInitialObjects() {
   Factory* factory = isolate()->factory();
 
   // The -0 value must be set before NewNumber works.
-  set_minus_zero_value(
-      *factory->NewHeapNumber(-0.0, IMMUTABLE, TENURED_READ_ONLY));
+  set_minus_zero_value(*factory->NewHeapNumber(-0.0, IMMUTABLE, TENURED));
   DCHECK(std::signbit(minus_zero_value()->Number()));
 
   set_nan_value(*factory->NewHeapNumber(
       std::numeric_limits<double>::quiet_NaN(), IMMUTABLE, TENURED_READ_ONLY));
   set_hole_nan_value(*factory->NewHeapNumberFromBits(kHoleNanInt64, IMMUTABLE,
                                                      TENURED_READ_ONLY));
-  set_infinity_value(
-      *factory->NewHeapNumber(V8_INFINITY, IMMUTABLE, TENURED_READ_ONLY));
+  set_infinity_value(*factory->NewHeapNumber(V8_INFINITY, IMMUTABLE, TENURED));
   set_minus_infinity_value(
-      *factory->NewHeapNumber(-V8_INFINITY, IMMUTABLE, TENURED_READ_ONLY));
+      *factory->NewHeapNumber(-V8_INFINITY, IMMUTABLE, TENURED));
 
   // Allocate cache for single character one byte strings.
   set_single_character_string_cache(
@@ -655,8 +653,7 @@ void Heap::CreateInitialObjects() {
                            Oddball::kStaleRegister));
 
   // Initialize the self-reference marker.
-  set_self_reference_marker(
-      *factory->NewSelfReferenceMarker(TENURED_READ_ONLY));
+  set_self_reference_marker(*factory->NewSelfReferenceMarker());
 
   // Create the code_stubs dictionary. The initial size is set to avoid
   // expanding the dictionary during bootstrapping.
@@ -664,11 +661,10 @@ void Heap::CreateInitialObjects() {
 
   {
     HandleScope scope(isolate());
-#define SYMBOL_INIT(name)                                           \
-  {                                                                 \
-    Handle<Symbol> symbol(                                          \
-        isolate()->factory()->NewPrivateSymbol(TENURED_READ_ONLY)); \
-    roots_[k##name##RootIndex] = *symbol;                           \
+#define SYMBOL_INIT(name)                                              \
+  {                                                                    \
+    Handle<Symbol> symbol(isolate()->factory()->NewPrivateSymbol());   \
+    roots_[k##name##RootIndex] = *symbol;                              \
   }
     PRIVATE_SYMBOL_LIST(SYMBOL_INIT)
 #undef SYMBOL_INIT
@@ -676,21 +672,19 @@ void Heap::CreateInitialObjects() {
 
   {
     HandleScope scope(isolate());
-#define SYMBOL_INIT(name, description)                                    \
-  Handle<Symbol> name = factory->NewSymbol(TENURED_READ_ONLY);            \
-  Handle<String> name##d =                                                \
-      factory->NewStringFromStaticChars(#description, TENURED_READ_ONLY); \
-  name->set_name(*name##d);                                               \
+#define SYMBOL_INIT(name, description)                                      \
+  Handle<Symbol> name = factory->NewSymbol();                               \
+  Handle<String> name##d = factory->NewStringFromStaticChars(#description); \
+  name->set_name(*name##d);                                                 \
   roots_[k##name##RootIndex] = *name;
     PUBLIC_SYMBOL_LIST(SYMBOL_INIT)
 #undef SYMBOL_INIT
 
-#define SYMBOL_INIT(name, description)                                    \
-  Handle<Symbol> name = factory->NewSymbol(TENURED_READ_ONLY);            \
-  Handle<String> name##d =                                                \
-      factory->NewStringFromStaticChars(#description, TENURED_READ_ONLY); \
-  name->set_is_well_known_symbol(true);                                   \
-  name->set_name(*name##d);                                               \
+#define SYMBOL_INIT(name, description)                                      \
+  Handle<Symbol> name = factory->NewSymbol();                               \
+  Handle<String> name##d = factory->NewStringFromStaticChars(#description); \
+  name->set_is_well_known_symbol(true);                                     \
+  name->set_name(*name##d);                                                 \
   roots_[k##name##RootIndex] = *name;
     WELL_KNOWN_SYMBOL_LIST(SYMBOL_INIT)
 #undef SYMBOL_INIT
@@ -699,8 +693,8 @@ void Heap::CreateInitialObjects() {
     to_string_tag_symbol->set_is_interesting_symbol(true);
   }
 
-  Handle<NameDictionary> empty_property_dictionary = NameDictionary::New(
-      isolate(), 1, TENURED_READ_ONLY, USE_CUSTOM_MINIMUM_CAPACITY);
+  Handle<NameDictionary> empty_property_dictionary =
+      NameDictionary::New(isolate(), 1, TENURED, USE_CUSTOM_MINIMUM_CAPACITY);
   DCHECK(!empty_property_dictionary->HasSufficientCapacityToAdd(1));
   set_empty_property_dictionary(*empty_property_dictionary);
 
@@ -728,15 +722,14 @@ void Heap::CreateInitialObjects() {
 
   {
     Handle<FixedArray> empty_sloppy_arguments_elements =
-        factory->NewFixedArray(2, TENURED_READ_ONLY);
+        factory->NewFixedArray(2, TENURED);
     empty_sloppy_arguments_elements->set_map_after_allocation(
         sloppy_arguments_elements_map(), SKIP_WRITE_BARRIER);
     set_empty_sloppy_arguments_elements(*empty_sloppy_arguments_elements);
   }
 
   {
-    Handle<WeakCell> cell =
-        factory->NewWeakCell(factory->undefined_value(), TENURED_READ_ONLY);
+    Handle<WeakCell> cell = factory->NewWeakCell(factory->undefined_value());
     set_empty_weak_cell(*cell);
     cell->clear();
   }
@@ -749,8 +742,8 @@ void Heap::CreateInitialObjects() {
 
   set_script_list(Smi::kZero);
 
-  Handle<NumberDictionary> slow_element_dictionary = NumberDictionary::New(
-      isolate(), 1, TENURED_READ_ONLY, USE_CUSTOM_MINIMUM_CAPACITY);
+  Handle<NumberDictionary> slow_element_dictionary =
+      NumberDictionary::New(isolate(), 1, TENURED, USE_CUSTOM_MINIMUM_CAPACITY);
   DCHECK(!slow_element_dictionary->HasSufficientCapacityToAdd(1));
   slow_element_dictionary->set_requires_slow_elements();
   set_empty_slow_element_dictionary(*slow_element_dictionary);
@@ -763,8 +756,8 @@ void Heap::CreateInitialObjects() {
   set_next_template_serial_number(Smi::kZero);
 
   // Allocate the empty OrderedHashMap.
-  Handle<FixedArray> empty_ordered_hash_map = factory->NewFixedArray(
-      OrderedHashMap::kHashTableStartIndex, TENURED_READ_ONLY);
+  Handle<FixedArray> empty_ordered_hash_map =
+      factory->NewFixedArray(OrderedHashMap::kHashTableStartIndex, TENURED);
   empty_ordered_hash_map->set_map_no_write_barrier(
       *factory->ordered_hash_map_map());
   for (int i = 0; i < empty_ordered_hash_map->length(); ++i) {
@@ -773,8 +766,8 @@ void Heap::CreateInitialObjects() {
   set_empty_ordered_hash_map(*empty_ordered_hash_map);
 
   // Allocate the empty OrderedHashSet.
-  Handle<FixedArray> empty_ordered_hash_set = factory->NewFixedArray(
-      OrderedHashSet::kHashTableStartIndex, TENURED_READ_ONLY);
+  Handle<FixedArray> empty_ordered_hash_set =
+      factory->NewFixedArray(OrderedHashSet::kHashTableStartIndex, TENURED);
   empty_ordered_hash_set->set_map_no_write_barrier(
       *factory->ordered_hash_set_map());
   for (int i = 0; i < empty_ordered_hash_set->length(); ++i) {
@@ -784,7 +777,7 @@ void Heap::CreateInitialObjects() {
 
   // Allocate the empty FeedbackMetadata.
   Handle<FeedbackMetadata> empty_feedback_metadata =
-      factory->NewFeedbackMetadata(0, TENURED_READ_ONLY);
+      factory->NewFeedbackMetadata(0);
   set_empty_feedback_metadata(*empty_feedback_metadata);
 
   // Allocate the empty script.
@@ -800,7 +793,7 @@ void Heap::CreateInitialObjects() {
   cell->set_value(Smi::FromInt(Isolate::kProtectorValid));
   set_no_elements_protector(*cell);
 
-  cell = factory->NewPropertyCell(factory->empty_string(), TENURED_READ_ONLY);
+  cell = factory->NewPropertyCell(factory->empty_string());
   cell->set_value(the_hole_value());
   set_empty_property_cell(*cell);
 

test/cctest/heap/test-heap.cc

@@ -2416,7 +2416,7 @@ TEST(OptimizedPretenuringDoubleArrayProperties) {
     return;
   v8::HandleScope scope(CcTest::isolate());
 
-  // Grow new space until maximum capacity reached.
+  // Grow new space unitl maximum capacity reached.
   while (!CcTest::heap()->new_space()->IsAtMaximumCapacity()) {
     CcTest::heap()->new_space()->Grow();
   }
@@ -2443,7 +2443,7 @@ TEST(OptimizedPretenuringDoubleArrayProperties) {
       v8::Utils::OpenHandle(*v8::Local<v8::Object>::Cast(res)));
 
   CHECK(CcTest::heap()->InOldSpace(*o));
-  CHECK_EQ(o->property_array(), CcTest::heap()->empty_property_array());
+  CHECK(CcTest::heap()->InOldSpace(o->property_array()));
 }
 
 

tools/v8heapconst.py

@@ -167,131 +167,131 @@ KNOWN_MAPS = {
   ("RO_SPACE", 0x02429): (211, "WeakCellMap"),
   ("RO_SPACE", 0x024d1): (152, "OnePointerFillerMap"),
   ("RO_SPACE", 0x02539): (152, "TwoPointerFillerMap"),
-  ("RO_SPACE", 0x025d1): (131, "UninitializedMap"),
-  ("RO_SPACE", 0x02661): (8, "OneByteInternalizedStringMap"),
-  ("RO_SPACE", 0x02721): (131, "UndefinedMap"),
-  ("RO_SPACE", 0x02799): (129, "HeapNumberMap"),
-  ("RO_SPACE", 0x02831): (131, "TheHoleMap"),
-  ("RO_SPACE", 0x028f9): (131, "BooleanMap"),
-  ("RO_SPACE", 0x02a09): (136, "ByteArrayMap"),
-  ("RO_SPACE", 0x02a71): (183, "FixedCOWArrayMap"),
-  ("RO_SPACE", 0x02ad9): (186, "HashTableMap"),
-  ("RO_SPACE", 0x02b41): (128, "SymbolMap"),
-  ("RO_SPACE", 0x02ba9): (72, "OneByteStringMap"),
-  ("RO_SPACE", 0x02c11): (187, "ScopeInfoMap"),
-  ("RO_SPACE", 0x02c79): (207, "SharedFunctionInfoMap"),
-  ("RO_SPACE", 0x02ce1): (133, "CodeMap"),
-  ("RO_SPACE", 0x02d49): (192, "FunctionContextMap"),
-  ("RO_SPACE", 0x02db1): (200, "CellMap"),
-  ("RO_SPACE", 0x02e19): (206, "GlobalPropertyCellMap"),
-  ("RO_SPACE", 0x02e81): (135, "ForeignMap"),
-  ("RO_SPACE", 0x02ee9): (198, "TransitionArrayMap"),
-  ("RO_SPACE", 0x02f51): (203, "FeedbackVectorMap"),
-  ("RO_SPACE", 0x02ff9): (131, "ArgumentsMarkerMap"),
-  ("RO_SPACE", 0x030b9): (131, "ExceptionMap"),
-  ("RO_SPACE", 0x03179): (131, "TerminationExceptionMap"),
-  ("RO_SPACE", 0x03241): (131, "OptimizedOutMap"),
-  ("RO_SPACE", 0x03301): (131, "StaleRegisterMap"),
-  ("RO_SPACE", 0x03391): (194, "NativeContextMap"),
-  ("RO_SPACE", 0x033f9): (193, "ModuleContextMap"),
-  ("RO_SPACE", 0x03461): (191, "EvalContextMap"),
-  ("RO_SPACE", 0x034c9): (195, "ScriptContextMap"),
-  ("RO_SPACE", 0x03531): (188, "BlockContextMap"),
-  ("RO_SPACE", 0x03599): (189, "CatchContextMap"),
-  ("RO_SPACE", 0x03601): (196, "WithContextMap"),
-  ("RO_SPACE", 0x03669): (190, "DebugEvaluateContextMap"),
-  ("RO_SPACE", 0x036d1): (183, "ScriptContextTableMap"),
-  ("RO_SPACE", 0x03739): (151, "FeedbackMetadataArrayMap"),
-  ("RO_SPACE", 0x037a1): (183, "ArrayListMap"),
-  ("RO_SPACE", 0x03809): (130, "BigIntMap"),
-  ("RO_SPACE", 0x03871): (184, "BoilerplateDescriptionMap"),
-  ("RO_SPACE", 0x038d9): (137, "BytecodeArrayMap"),
-  ("RO_SPACE", 0x03941): (201, "CodeDataContainerMap"),
-  ("RO_SPACE", 0x039a9): (150, "FixedDoubleArrayMap"),
-  ("RO_SPACE", 0x03a11): (186, "GlobalDictionaryMap"),
-  ("RO_SPACE", 0x03a79): (202, "ManyClosuresCellMap"),
-  ("RO_SPACE", 0x03ae1): (183, "ModuleInfoMap"),
-  ("RO_SPACE", 0x03b49): (134, "MutableHeapNumberMap"),
-  ("RO_SPACE", 0x03bb1): (186, "NameDictionaryMap"),
-  ("RO_SPACE", 0x03c19): (202, "NoClosuresCellMap"),
-  ("RO_SPACE", 0x03c81): (186, "NumberDictionaryMap"),
-  ("RO_SPACE", 0x03ce9): (202, "OneClosureCellMap"),
-  ("RO_SPACE", 0x03d51): (186, "OrderedHashMapMap"),
-  ("RO_SPACE", 0x03db9): (186, "OrderedHashSetMap"),
-  ("RO_SPACE", 0x03e21): (205, "PropertyArrayMap"),
-  ("RO_SPACE", 0x03e89): (199, "SideEffectCallHandlerInfoMap"),
-  ("RO_SPACE", 0x03ef1): (199, "SideEffectFreeCallHandlerInfoMap"),
-  ("RO_SPACE", 0x03f59): (199, "NextCallSideEffectFreeCallHandlerInfoMap"),
-  ("RO_SPACE", 0x03fc1): (186, "SimpleNumberDictionaryMap"),
-  ("RO_SPACE", 0x04029): (183, "SloppyArgumentsElementsMap"),
-  ("RO_SPACE", 0x04091): (208, "SmallOrderedHashMapMap"),
-  ("RO_SPACE", 0x040f9): (209, "SmallOrderedHashSetMap"),
-  ("RO_SPACE", 0x04161): (186, "StringTableMap"),
-  ("RO_SPACE", 0x041c9): (197, "WeakFixedArrayMap"),
-  ("RO_SPACE", 0x04231): (212, "WeakArrayListMap"),
-  ("RO_SPACE", 0x04299): (106, "NativeSourceStringMap"),
-  ("RO_SPACE", 0x04301): (64, "StringMap"),
-  ("RO_SPACE", 0x04369): (73, "ConsOneByteStringMap"),
-  ("RO_SPACE", 0x043d1): (65, "ConsStringMap"),
-  ("RO_SPACE", 0x04439): (77, "ThinOneByteStringMap"),
-  ("RO_SPACE", 0x044a1): (69, "ThinStringMap"),
-  ("RO_SPACE", 0x04509): (67, "SlicedStringMap"),
-  ("RO_SPACE", 0x04571): (75, "SlicedOneByteStringMap"),
-  ("RO_SPACE", 0x045d9): (66, "ExternalStringMap"),
-  ("RO_SPACE", 0x04641): (82, "ExternalStringWithOneByteDataMap"),
-  ("RO_SPACE", 0x046a9): (74, "ExternalOneByteStringMap"),
-  ("RO_SPACE", 0x04711): (98, "ShortExternalStringMap"),
-  ("RO_SPACE", 0x04779): (114, "ShortExternalStringWithOneByteDataMap"),
-  ("RO_SPACE", 0x047e1): (0, "InternalizedStringMap"),
-  ("RO_SPACE", 0x04849): (2, "ExternalInternalizedStringMap"),
-  ("RO_SPACE", 0x048b1): (18, "ExternalInternalizedStringWithOneByteDataMap"),
-  ("RO_SPACE", 0x04919): (10, "ExternalOneByteInternalizedStringMap"),
-  ("RO_SPACE", 0x04981): (34, "ShortExternalInternalizedStringMap"),
-  ("RO_SPACE", 0x049e9): (50, "ShortExternalInternalizedStringWithOneByteDataMap"),
-  ("RO_SPACE", 0x04a51): (42, "ShortExternalOneByteInternalizedStringMap"),
-  ("RO_SPACE", 0x04ab9): (106, "ShortExternalOneByteStringMap"),
-  ("RO_SPACE", 0x04b21): (140, "FixedUint8ArrayMap"),
-  ("RO_SPACE", 0x04b89): (139, "FixedInt8ArrayMap"),
-  ("RO_SPACE", 0x04bf1): (142, "FixedUint16ArrayMap"),
-  ("RO_SPACE", 0x04c59): (141, "FixedInt16ArrayMap"),
-  ("RO_SPACE", 0x04cc1): (144, "FixedUint32ArrayMap"),
-  ("RO_SPACE", 0x04d29): (143, "FixedInt32ArrayMap"),
-  ("RO_SPACE", 0x04d91): (145, "FixedFloat32ArrayMap"),
-  ("RO_SPACE", 0x04df9): (146, "FixedFloat64ArrayMap"),
-  ("RO_SPACE", 0x04e61): (147, "FixedUint8ClampedArrayMap"),
-  ("RO_SPACE", 0x04ec9): (149, "FixedBigUint64ArrayMap"),
-  ("RO_SPACE", 0x04f31): (148, "FixedBigInt64ArrayMap"),
-  ("RO_SPACE", 0x04f99): (131, "SelfReferenceMarkerMap"),
-  ("RO_SPACE", 0x05019): (172, "Tuple2Map"),
-  ("RO_SPACE", 0x05211): (170, "ScriptMap"),
-  ("RO_SPACE", 0x053d9): (162, "InterceptorInfoMap"),
-  ("RO_SPACE", 0x09be1): (154, "AccessorInfoMap"),
-  ("RO_SPACE", 0x09df1): (153, "AccessCheckInfoMap"),
-  ("RO_SPACE", 0x09e59): (155, "AccessorPairMap"),
-  ("RO_SPACE", 0x09ec1): (156, "AliasedArgumentsEntryMap"),
-  ("RO_SPACE", 0x09f29): (157, "AllocationMementoMap"),
-  ("RO_SPACE", 0x09f91): (158, "AllocationSiteMap"),
-  ("RO_SPACE", 0x09ff9): (159, "AsyncGeneratorRequestMap"),
-  ("RO_SPACE", 0x0a061): (160, "DebugInfoMap"),
-  ("RO_SPACE", 0x0a0c9): (161, "FunctionTemplateInfoMap"),
-  ("RO_SPACE", 0x0a131): (163, "InterpreterDataMap"),
-  ("RO_SPACE", 0x0a199): (164, "ModuleInfoEntryMap"),
-  ("RO_SPACE", 0x0a201): (165, "ModuleMap"),
-  ("RO_SPACE", 0x0a269): (166, "ObjectTemplateInfoMap"),
-  ("RO_SPACE", 0x0a2d1): (167, "PromiseCapabilityMap"),
-  ("RO_SPACE", 0x0a339): (168, "PromiseReactionMap"),
-  ("RO_SPACE", 0x0a3a1): (169, "PrototypeInfoMap"),
-  ("RO_SPACE", 0x0a409): (171, "StackFrameInfoMap"),
-  ("RO_SPACE", 0x0a471): (173, "Tuple3Map"),
-  ("RO_SPACE", 0x0a4d9): (174, "WasmCompiledModuleMap"),
-  ("RO_SPACE", 0x0a541): (175, "WasmDebugInfoMap"),
-  ("RO_SPACE", 0x0a5a9): (176, "WasmExportedFunctionDataMap"),
-  ("RO_SPACE", 0x0a611): (177, "WasmSharedModuleDataMap"),
-  ("RO_SPACE", 0x0a679): (178, "CallableTaskMap"),
-  ("RO_SPACE", 0x0a6e1): (179, "CallbackTaskMap"),
-  ("RO_SPACE", 0x0a749): (180, "PromiseFulfillReactionJobTaskMap"),
-  ("RO_SPACE", 0x0a7b1): (181, "PromiseRejectReactionJobTaskMap"),
-  ("RO_SPACE", 0x0a819): (182, "PromiseResolveThenableJobTaskMap"),
+  ("RO_SPACE", 0x025a1): (131, "UninitializedMap"),
+  ("RO_SPACE", 0x02631): (8, "OneByteInternalizedStringMap"),
+  ("RO_SPACE", 0x026f1): (131, "UndefinedMap"),
+  ("RO_SPACE", 0x02769): (129, "HeapNumberMap"),
+  ("RO_SPACE", 0x02801): (131, "TheHoleMap"),
+  ("RO_SPACE", 0x028c9): (131, "BooleanMap"),
+  ("RO_SPACE", 0x029d9): (136, "ByteArrayMap"),
+  ("RO_SPACE", 0x02a41): (183, "FixedCOWArrayMap"),
+  ("RO_SPACE", 0x02aa9): (186, "HashTableMap"),
+  ("RO_SPACE", 0x02b11): (128, "SymbolMap"),
+  ("RO_SPACE", 0x02b79): (72, "OneByteStringMap"),
+  ("RO_SPACE", 0x02be1): (187, "ScopeInfoMap"),
+  ("RO_SPACE", 0x02c49): (207, "SharedFunctionInfoMap"),
+  ("RO_SPACE", 0x02cb1): (133, "CodeMap"),
+  ("RO_SPACE", 0x02d19): (192, "FunctionContextMap"),
+  ("RO_SPACE", 0x02d81): (200, "CellMap"),
+  ("RO_SPACE", 0x02de9): (206, "GlobalPropertyCellMap"),
+  ("RO_SPACE", 0x02e51): (135, "ForeignMap"),
+  ("RO_SPACE", 0x02eb9): (198, "TransitionArrayMap"),
+  ("RO_SPACE", 0x02f21): (203, "FeedbackVectorMap"),
+  ("RO_SPACE", 0x02f89): (131, "ArgumentsMarkerMap"),
+  ("RO_SPACE", 0x03019): (131, "ExceptionMap"),
+  ("RO_SPACE", 0x030a9): (131, "TerminationExceptionMap"),
+  ("RO_SPACE", 0x03141): (131, "OptimizedOutMap"),
+  ("RO_SPACE", 0x031d1): (131, "StaleRegisterMap"),
+  ("RO_SPACE", 0x03261): (194, "NativeContextMap"),
+  ("RO_SPACE", 0x032c9): (193, "ModuleContextMap"),
+  ("RO_SPACE", 0x03331): (191, "EvalContextMap"),
+  ("RO_SPACE", 0x03399): (195, "ScriptContextMap"),
+  ("RO_SPACE", 0x03401): (188, "BlockContextMap"),
+  ("RO_SPACE", 0x03469): (189, "CatchContextMap"),
+  ("RO_SPACE", 0x034d1): (196, "WithContextMap"),
+  ("RO_SPACE", 0x03539): (190, "DebugEvaluateContextMap"),
+  ("RO_SPACE", 0x035a1): (183, "ScriptContextTableMap"),
+  ("RO_SPACE", 0x03609): (151, "FeedbackMetadataArrayMap"),
+  ("RO_SPACE", 0x03671): (183, "ArrayListMap"),
+  ("RO_SPACE", 0x036d9): (130, "BigIntMap"),
+  ("RO_SPACE", 0x03741): (184, "BoilerplateDescriptionMap"),
+  ("RO_SPACE", 0x037a9): (137, "BytecodeArrayMap"),
+  ("RO_SPACE", 0x03811): (201, "CodeDataContainerMap"),
+  ("RO_SPACE", 0x03879): (150, "FixedDoubleArrayMap"),
+  ("RO_SPACE", 0x038e1): (186, "GlobalDictionaryMap"),
+  ("RO_SPACE", 0x03949): (202, "ManyClosuresCellMap"),
+  ("RO_SPACE", 0x039b1): (183, "ModuleInfoMap"),
+  ("RO_SPACE", 0x03a19): (134, "MutableHeapNumberMap"),
+  ("RO_SPACE", 0x03a81): (186, "NameDictionaryMap"),
+  ("RO_SPACE", 0x03ae9): (202, "NoClosuresCellMap"),
+  ("RO_SPACE", 0x03b51): (186, "NumberDictionaryMap"),
+  ("RO_SPACE", 0x03bb9): (202, "OneClosureCellMap"),
+  ("RO_SPACE", 0x03c21): (186, "OrderedHashMapMap"),
+  ("RO_SPACE", 0x03c89): (186, "OrderedHashSetMap"),
+  ("RO_SPACE", 0x03cf1): (205, "PropertyArrayMap"),
+  ("RO_SPACE", 0x03d59): (199, "SideEffectCallHandlerInfoMap"),
+  ("RO_SPACE", 0x03dc1): (199, "SideEffectFreeCallHandlerInfoMap"),
+  ("RO_SPACE", 0x03e29): (199, "NextCallSideEffectFreeCallHandlerInfoMap"),
+  ("RO_SPACE", 0x03e91): (186, "SimpleNumberDictionaryMap"),
+  ("RO_SPACE", 0x03ef9): (183, "SloppyArgumentsElementsMap"),
+  ("RO_SPACE", 0x03f61): (208, "SmallOrderedHashMapMap"),
+  ("RO_SPACE", 0x03fc9): (209, "SmallOrderedHashSetMap"),
+  ("RO_SPACE", 0x04031): (186, "StringTableMap"),
+  ("RO_SPACE", 0x04099): (197, "WeakFixedArrayMap"),
+  ("RO_SPACE", 0x04101): (212, "WeakArrayListMap"),
+  ("RO_SPACE", 0x04169): (106, "NativeSourceStringMap"),
+  ("RO_SPACE", 0x041d1): (64, "StringMap"),
+  ("RO_SPACE", 0x04239): (73, "ConsOneByteStringMap"),
+  ("RO_SPACE", 0x042a1): (65, "ConsStringMap"),
+  ("RO_SPACE", 0x04309): (77, "ThinOneByteStringMap"),
+  ("RO_SPACE", 0x04371): (69, "ThinStringMap"),
+  ("RO_SPACE", 0x043d9): (67, "SlicedStringMap"),
+  ("RO_SPACE", 0x04441): (75, "SlicedOneByteStringMap"),
+  ("RO_SPACE", 0x044a9): (66, "ExternalStringMap"),
+  ("RO_SPACE", 0x04511): (82, "ExternalStringWithOneByteDataMap"),
+  ("RO_SPACE", 0x04579): (74, "ExternalOneByteStringMap"),
+  ("RO_SPACE", 0x045e1): (98, "ShortExternalStringMap"),
+  ("RO_SPACE", 0x04649): (114, "ShortExternalStringWithOneByteDataMap"),
+  ("RO_SPACE", 0x046b1): (0, "InternalizedStringMap"),
+  ("RO_SPACE", 0x04719): (2, "ExternalInternalizedStringMap"),
+  ("RO_SPACE", 0x04781): (18, "ExternalInternalizedStringWithOneByteDataMap"),
+  ("RO_SPACE", 0x047e9): (10, "ExternalOneByteInternalizedStringMap"),
+  ("RO_SPACE", 0x04851): (34, "ShortExternalInternalizedStringMap"),
+  ("RO_SPACE", 0x048b9): (50, "ShortExternalInternalizedStringWithOneByteDataMap"),
+  ("RO_SPACE", 0x04921): (42, "ShortExternalOneByteInternalizedStringMap"),
+  ("RO_SPACE", 0x04989): (106, "ShortExternalOneByteStringMap"),
+  ("RO_SPACE", 0x049f1): (140, "FixedUint8ArrayMap"),
+  ("RO_SPACE", 0x04a59): (139, "FixedInt8ArrayMap"),
+  ("RO_SPACE", 0x04ac1): (142, "FixedUint16ArrayMap"),
+  ("RO_SPACE", 0x04b29): (141, "FixedInt16ArrayMap"),
+  ("RO_SPACE", 0x04b91): (144, "FixedUint32ArrayMap"),
+  ("RO_SPACE", 0x04bf9): (143, "FixedInt32ArrayMap"),
+  ("RO_SPACE", 0x04c61): (145, "FixedFloat32ArrayMap"),
+  ("RO_SPACE", 0x04cc9): (146, "FixedFloat64ArrayMap"),
+  ("RO_SPACE", 0x04d31): (147, "FixedUint8ClampedArrayMap"),
+  ("RO_SPACE", 0x04d99): (149, "FixedBigUint64ArrayMap"),
+  ("RO_SPACE", 0x04e01): (148, "FixedBigInt64ArrayMap"),
+  ("RO_SPACE", 0x04e69): (131, "SelfReferenceMarkerMap"),
+  ("RO_SPACE", 0x04ee9): (172, "Tuple2Map"),
+  ("RO_SPACE", 0x04f61): (170, "ScriptMap"),
+  ("RO_SPACE", 0x04fc9): (162, "InterceptorInfoMap"),
+  ("RO_SPACE", 0x08ec1): (154, "AccessorInfoMap"),
+  ("RO_SPACE", 0x090d1): (153, "AccessCheckInfoMap"),
+  ("RO_SPACE", 0x09139): (155, "AccessorPairMap"),
+  ("RO_SPACE", 0x091a1): (156, "AliasedArgumentsEntryMap"),
+  ("RO_SPACE", 0x09209): (157, "AllocationMementoMap"),
+  ("RO_SPACE", 0x09271): (158, "AllocationSiteMap"),
+  ("RO_SPACE", 0x092d9): (159, "AsyncGeneratorRequestMap"),
+  ("RO_SPACE", 0x09341): (160, "DebugInfoMap"),
+  ("RO_SPACE", 0x093a9): (161, "FunctionTemplateInfoMap"),
+  ("RO_SPACE", 0x09411): (163, "InterpreterDataMap"),
+  ("RO_SPACE", 0x09479): (164, "ModuleInfoEntryMap"),
+  ("RO_SPACE", 0x094e1): (165, "ModuleMap"),
+  ("RO_SPACE", 0x09549): (166, "ObjectTemplateInfoMap"),
+  ("RO_SPACE", 0x095b1): (167, "PromiseCapabilityMap"),
+  ("RO_SPACE", 0x09619): (168, "PromiseReactionMap"),
+  ("RO_SPACE", 0x09681): (169, "PrototypeInfoMap"),
+  ("RO_SPACE", 0x096e9): (171, "StackFrameInfoMap"),
+  ("RO_SPACE", 0x09751): (173, "Tuple3Map"),
+  ("RO_SPACE", 0x097b9): (174, "WasmCompiledModuleMap"),
+  ("RO_SPACE", 0x09821): (175, "WasmDebugInfoMap"),
+  ("RO_SPACE", 0x09889): (176, "WasmExportedFunctionDataMap"),
+  ("RO_SPACE", 0x098f1): (177, "WasmSharedModuleDataMap"),
+  ("RO_SPACE", 0x09959): (178, "CallableTaskMap"),
+  ("RO_SPACE", 0x099c1): (179, "CallbackTaskMap"),
+  ("RO_SPACE", 0x09a29): (180, "PromiseFulfillReactionJobTaskMap"),
+  ("RO_SPACE", 0x09a91): (181, "PromiseRejectReactionJobTaskMap"),
+  ("RO_SPACE", 0x09af9): (182, "PromiseResolveThenableJobTaskMap"),
   ("MAP_SPACE", 0x02201): (1057, "ExternalMap"),
   ("MAP_SPACE", 0x02259): (1072, "JSMessageObjectMap"),
 }
@@ -301,50 +301,50 @@ KNOWN_OBJECTS = {
   ("RO_SPACE", 0x022b1): "NullValue",
   ("RO_SPACE", 0x02339): "EmptyDescriptorArray",
   ("RO_SPACE", 0x023b1): "EmptyFixedArray",
-  ("RO_SPACE", 0x025a1): "UninitializedValue",
-  ("RO_SPACE", 0x026f1): "UndefinedValue",
-  ("RO_SPACE", 0x02789): "NanValue",
-  ("RO_SPACE", 0x02801): "TheHoleValue",
-  ("RO_SPACE", 0x028b9): "HoleNanValue",
-  ("RO_SPACE", 0x028c9): "TrueValue",
-  ("RO_SPACE", 0x029a1): "FalseValue",
-  ("RO_SPACE", 0x029f1): "empty_string",
-  ("RO_SPACE", 0x02fb9): "EmptyScopeInfo",
-  ("RO_SPACE", 0x02fc9): "ArgumentsMarker",
-  ("RO_SPACE", 0x03089): "Exception",
-  ("RO_SPACE", 0x03149): "TerminationException",
-  ("RO_SPACE", 0x03211): "OptimizedOut",
-  ("RO_SPACE", 0x032d1): "StaleRegister",
-  ("RO_SPACE", 0x05091): "EmptyByteArray",
-  ("RO_SPACE", 0x050b1): "EmptyFixedUint8Array",
-  ("RO_SPACE", 0x050d1): "EmptyFixedInt8Array",
-  ("RO_SPACE", 0x050f1): "EmptyFixedUint16Array",
-  ("RO_SPACE", 0x05111): "EmptyFixedInt16Array",
-  ("RO_SPACE", 0x05131): "EmptyFixedUint32Array",
-  ("RO_SPACE", 0x05151): "EmptyFixedInt32Array",
-  ("RO_SPACE", 0x05171): "EmptyFixedFloat32Array",
-  ("RO_SPACE", 0x05191): "EmptyFixedFloat64Array",
-  ("RO_SPACE", 0x051b1): "EmptyFixedUint8ClampedArray",
-  ("RO_SPACE", 0x05289): "EmptySloppyArgumentsElements",
-  ("RO_SPACE", 0x052a9): "EmptySlowElementDictionary",
-  ("RO_SPACE", 0x052f1): "EmptyOrderedHashMap",
-  ("RO_SPACE", 0x05319): "EmptyOrderedHashSet",
-  ("RO_SPACE", 0x05351): "EmptyPropertyCell",
-  ("RO_SPACE", 0x05379): "EmptyWeakCell",
-  ("RO_SPACE", 0x05459): "InfinityValue",
-  ("RO_SPACE", 0x05469): "MinusZeroValue",
-  ("RO_SPACE", 0x05479): "MinusInfinityValue",
-  ("RO_SPACE", 0x05489): "SelfReferenceMarker",
-  ("OLD_SPACE", 0x02211): "EmptyScript",
-  ("OLD_SPACE", 0x02299): "ManyClosuresCell",
-  ("OLD_SPACE", 0x022b9): "NoElementsProtector",
-  ("OLD_SPACE", 0x022e1): "IsConcatSpreadableProtector",
-  ("OLD_SPACE", 0x022f1): "ArraySpeciesProtector",
-  ("OLD_SPACE", 0x02319): "TypedArraySpeciesProtector",
-  ("OLD_SPACE", 0x02341): "PromiseSpeciesProtector",
-  ("OLD_SPACE", 0x02369): "StringLengthProtector",
-  ("OLD_SPACE", 0x02379): "ArrayIteratorProtector",
-  ("OLD_SPACE", 0x023a1): "ArrayBufferNeuteringProtector",
+  ("RO_SPACE", 0x026c1): "UndefinedValue",
+  ("RO_SPACE", 0x02759): "NanValue",
+  ("RO_SPACE", 0x027d1): "TheHoleValue",
+  ("RO_SPACE", 0x02889): "HoleNanValue",
+  ("RO_SPACE", 0x02899): "TrueValue",
+  ("RO_SPACE", 0x02971): "FalseValue",
+  ("RO_SPACE", 0x029c1): "empty_string",
+  ("RO_SPACE", 0x04f51): "EmptyByteArray",
+  ("OLD_SPACE", 0x02201): "UninitializedValue",
+  ("OLD_SPACE", 0x02231): "EmptyScopeInfo",
+  ("OLD_SPACE", 0x02241): "ArgumentsMarker",
+  ("OLD_SPACE", 0x02271): "Exception",
+  ("OLD_SPACE", 0x022a1): "TerminationException",
+  ("OLD_SPACE", 0x022d1): "OptimizedOut",
+  ("OLD_SPACE", 0x02301): "StaleRegister",
+  ("OLD_SPACE", 0x02361): "EmptyFixedUint8Array",
+  ("OLD_SPACE", 0x02381): "EmptyFixedInt8Array",
+  ("OLD_SPACE", 0x023a1): "EmptyFixedUint16Array",
+  ("OLD_SPACE", 0x023c1): "EmptyFixedInt16Array",
+  ("OLD_SPACE", 0x023e1): "EmptyFixedUint32Array",
+  ("OLD_SPACE", 0x02401): "EmptyFixedInt32Array",
+  ("OLD_SPACE", 0x02421): "EmptyFixedFloat32Array",
+  ("OLD_SPACE", 0x02441): "EmptyFixedFloat64Array",
+  ("OLD_SPACE", 0x02461): "EmptyFixedUint8ClampedArray",
+  ("OLD_SPACE", 0x024c1): "EmptyScript",
+  ("OLD_SPACE", 0x02559): "ManyClosuresCell",
+  ("OLD_SPACE", 0x02569): "EmptySloppyArgumentsElements",
+  ("OLD_SPACE", 0x02589): "EmptySlowElementDictionary",
+  ("OLD_SPACE", 0x025d1): "EmptyOrderedHashMap",
+  ("OLD_SPACE", 0x025f9): "EmptyOrderedHashSet",
+  ("OLD_SPACE", 0x02631): "EmptyPropertyCell",
+  ("OLD_SPACE", 0x02659): "EmptyWeakCell",
+  ("OLD_SPACE", 0x026e1): "NoElementsProtector",
+  ("OLD_SPACE", 0x02709): "IsConcatSpreadableProtector",
+  ("OLD_SPACE", 0x02719): "ArraySpeciesProtector",
+  ("OLD_SPACE", 0x02741): "TypedArraySpeciesProtector",
+  ("OLD_SPACE", 0x02769): "PromiseSpeciesProtector",
+  ("OLD_SPACE", 0x02791): "StringLengthProtector",
+  ("OLD_SPACE", 0x027a1): "ArrayIteratorProtector",
+  ("OLD_SPACE", 0x027c9): "ArrayBufferNeuteringProtector",
+  ("OLD_SPACE", 0x02851): "InfinityValue",
+  ("OLD_SPACE", 0x02861): "MinusZeroValue",
+  ("OLD_SPACE", 0x02871): "MinusInfinityValue",
+  ("OLD_SPACE", 0x02881): "SelfReferenceMarker",
 }
 
 # List of known V8 Frame Markers.