Reland "[ptr-compr][x64] Temporarily enable pointer compression on x64"

This is a reland of 42beed975e6f6d0151098dc46afddcd784fc9b1d

Relanding after fixing Chromium issues.

Original change's description:
> [ptr-compr][x64] Temporarily enable pointer compression on x64
>
> ... and make sure that the x64 ptr-compr bots proceed testing V8 without
> pointer compression in order to keep testing the full pointer mode.
>
> Bug: v8:7703
> Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng,v8_linux64_tsan_rel
> Change-Id: Iee725deda813425a6f0722948b54976154f50909
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1497139
> Reviewed-by: Michael Hablich <hablich@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60230}

Bug: v8:7703
Change-Id: Ib1498609603cb03be2464043658131d5a2f1e012
Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng,v8_linux64_tsan_rel
Cq-Include-Trybots: luci.chromium.try:fuchsia_x64,linux-rel,mac-rel
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1559850
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61416}
diff --git a/BUILD.gn b/BUILD.gn
index 775f738..c348a5a 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -104,7 +104,7 @@
   v8_enable_verify_csa = false
 
   # Enable pointer compression (sets -dV8_COMPRESS_POINTERS).
-  v8_enable_pointer_compression = false
+  v8_enable_pointer_compression = ""
   v8_enable_31bit_smis_on_64bit_arch = false
 
   # Sets -dOBJECT_PRINT.
@@ -225,6 +225,11 @@
   v8_enable_snapshot_native_code_counters = v8_enable_debugging_features
 }
 
+if (v8_enable_pointer_compression == "") {
+  # TODO(v8:v7703): temporarily enable pointer compression on x64
+  v8_enable_pointer_compression = v8_current_cpu == "x64"
+}
+
 assert(v8_current_cpu != "x86" || !v8_untrusted_code_mitigations,
        "Untrusted code mitigations are unsupported on ia32")
 
diff --git a/infra/mb/mb_config.pyl b/infra/mb/mb_config.pyl
index 9c1f3b4..3a4af3e 100644
--- a/infra/mb/mb_config.pyl
+++ b/infra/mb/mb_config.pyl
@@ -454,7 +454,10 @@
       'release_bot', 'x64', 'minimal_symbols'],
     'release_x64_pointer_compression': [
       'release_bot', 'x64', 'dcheck_always_on', 'v8_enable_slow_dchecks',
-      'v8_enable_pointer_compression'],
+      # TODO(v8:v7703): Make pointer compression bots testing non pointer
+      # compression mode while pointer compression is temporarily enabled
+      # on x64
+      'v8_disable_pointer_compression'],
     'release_x64_trybot': [
       'release_trybot', 'x64'],
     'release_x64_test_features_trybot': [
@@ -810,6 +813,10 @@
       'gn_args': 'v8_enable_pointer_compression=true',
     },
 
+    'v8_disable_pointer_compression': {
+      'gn_args': 'v8_enable_pointer_compression=false',
+    },
+
     'v8_enable_test_features': {
       'gn_args': 'v8_enable_test_features=true',
     },
diff --git a/tools/v8heapconst.py b/tools/v8heapconst.py
index 62d32cb..b854009 100644
--- a/tools/v8heapconst.py
+++ b/tools/v8heapconst.py
@@ -196,249 +196,249 @@
 # List of known V8 maps.
 KNOWN_MAPS = {
   ("read_only_space", 0x00141): (74, "FreeSpaceMap"),
-  ("read_only_space", 0x00191): (68, "MetaMap"),
-  ("read_only_space", 0x00211): (67, "NullMap"),
-  ("read_only_space", 0x00279): (158, "DescriptorArrayMap"),
-  ("read_only_space", 0x002d9): (153, "WeakFixedArrayMap"),
-  ("read_only_space", 0x00329): (88, "OnePointerFillerMap"),
-  ("read_only_space", 0x00379): (88, "TwoPointerFillerMap"),
-  ("read_only_space", 0x003f9): (67, "UninitializedMap"),
-  ("read_only_space", 0x00469): (8, "OneByteInternalizedStringMap"),
-  ("read_only_space", 0x00509): (67, "UndefinedMap"),
-  ("read_only_space", 0x00569): (65, "HeapNumberMap"),
-  ("read_only_space", 0x005e9): (67, "TheHoleMap"),
-  ("read_only_space", 0x00691): (67, "BooleanMap"),
-  ("read_only_space", 0x00769): (72, "ByteArrayMap"),
-  ("read_only_space", 0x007b9): (128, "FixedArrayMap"),
-  ("read_only_space", 0x00809): (128, "FixedCOWArrayMap"),
-  ("read_only_space", 0x00859): (131, "HashTableMap"),
-  ("read_only_space", 0x008a9): (64, "SymbolMap"),
-  ("read_only_space", 0x008f9): (40, "OneByteStringMap"),
-  ("read_only_space", 0x00949): (141, "ScopeInfoMap"),
-  ("read_only_space", 0x00999): (165, "SharedFunctionInfoMap"),
-  ("read_only_space", 0x009e9): (69, "CodeMap"),
-  ("read_only_space", 0x00a39): (148, "FunctionContextMap"),
-  ("read_only_space", 0x00a89): (156, "CellMap"),
-  ("read_only_space", 0x00ad9): (164, "GlobalPropertyCellMap"),
-  ("read_only_space", 0x00b29): (71, "ForeignMap"),
-  ("read_only_space", 0x00b79): (154, "TransitionArrayMap"),
-  ("read_only_space", 0x00bc9): (160, "FeedbackVectorMap"),
-  ("read_only_space", 0x00c69): (67, "ArgumentsMarkerMap"),
-  ("read_only_space", 0x00d09): (67, "ExceptionMap"),
-  ("read_only_space", 0x00da9): (67, "TerminationExceptionMap"),
-  ("read_only_space", 0x00e51): (67, "OptimizedOutMap"),
-  ("read_only_space", 0x00ef1): (67, "StaleRegisterMap"),
-  ("read_only_space", 0x00f61): (150, "NativeContextMap"),
-  ("read_only_space", 0x00fb1): (149, "ModuleContextMap"),
-  ("read_only_space", 0x01001): (147, "EvalContextMap"),
-  ("read_only_space", 0x01051): (151, "ScriptContextMap"),
-  ("read_only_space", 0x010a1): (143, "AwaitContextMap"),
-  ("read_only_space", 0x010f1): (144, "BlockContextMap"),
-  ("read_only_space", 0x01141): (145, "CatchContextMap"),
-  ("read_only_space", 0x01191): (152, "WithContextMap"),
-  ("read_only_space", 0x011e1): (146, "DebugEvaluateContextMap"),
-  ("read_only_space", 0x01231): (142, "ScriptContextTableMap"),
-  ("read_only_space", 0x01281): (130, "ClosureFeedbackCellArrayMap"),
-  ("read_only_space", 0x012d1): (87, "FeedbackMetadataArrayMap"),
-  ("read_only_space", 0x01321): (128, "ArrayListMap"),
-  ("read_only_space", 0x01371): (66, "BigIntMap"),
-  ("read_only_space", 0x013c1): (129, "ObjectBoilerplateDescriptionMap"),
-  ("read_only_space", 0x01411): (73, "BytecodeArrayMap"),
-  ("read_only_space", 0x01461): (157, "CodeDataContainerMap"),
-  ("read_only_space", 0x014b1): (86, "FixedDoubleArrayMap"),
-  ("read_only_space", 0x01501): (136, "GlobalDictionaryMap"),
-  ("read_only_space", 0x01551): (159, "ManyClosuresCellMap"),
-  ("read_only_space", 0x015a1): (128, "ModuleInfoMap"),
-  ("read_only_space", 0x015f1): (70, "MutableHeapNumberMap"),
-  ("read_only_space", 0x01641): (135, "NameDictionaryMap"),
-  ("read_only_space", 0x01691): (159, "NoClosuresCellMap"),
-  ("read_only_space", 0x016e1): (137, "NumberDictionaryMap"),
-  ("read_only_space", 0x01731): (159, "OneClosureCellMap"),
-  ("read_only_space", 0x01781): (132, "OrderedHashMapMap"),
-  ("read_only_space", 0x017d1): (133, "OrderedHashSetMap"),
-  ("read_only_space", 0x01821): (134, "OrderedNameDictionaryMap"),
-  ("read_only_space", 0x01871): (162, "PreparseDataMap"),
-  ("read_only_space", 0x018c1): (163, "PropertyArrayMap"),
-  ("read_only_space", 0x01911): (155, "SideEffectCallHandlerInfoMap"),
-  ("read_only_space", 0x01961): (155, "SideEffectFreeCallHandlerInfoMap"),
-  ("read_only_space", 0x019b1): (155, "NextCallSideEffectFreeCallHandlerInfoMap"),
-  ("read_only_space", 0x01a01): (138, "SimpleNumberDictionaryMap"),
-  ("read_only_space", 0x01a51): (128, "SloppyArgumentsElementsMap"),
-  ("read_only_space", 0x01aa1): (166, "SmallOrderedHashMapMap"),
-  ("read_only_space", 0x01af1): (167, "SmallOrderedHashSetMap"),
-  ("read_only_space", 0x01b41): (168, "SmallOrderedNameDictionaryMap"),
-  ("read_only_space", 0x01b91): (139, "StringTableMap"),
-  ("read_only_space", 0x01be1): (170, "UncompiledDataWithoutPreparseDataMap"),
-  ("read_only_space", 0x01c31): (171, "UncompiledDataWithPreparseDataMap"),
-  ("read_only_space", 0x01c81): (172, "WeakArrayListMap"),
-  ("read_only_space", 0x01cd1): (140, "EphemeronHashTableMap"),
-  ("read_only_space", 0x01d21): (127, "EmbedderDataArrayMap"),
-  ("read_only_space", 0x01d71): (173, "WeakCellMap"),
-  ("read_only_space", 0x01dc1): (58, "NativeSourceStringMap"),
-  ("read_only_space", 0x01e11): (32, "StringMap"),
-  ("read_only_space", 0x01e61): (41, "ConsOneByteStringMap"),
-  ("read_only_space", 0x01eb1): (33, "ConsStringMap"),
-  ("read_only_space", 0x01f01): (45, "ThinOneByteStringMap"),
-  ("read_only_space", 0x01f51): (37, "ThinStringMap"),
-  ("read_only_space", 0x01fa1): (35, "SlicedStringMap"),
-  ("read_only_space", 0x01ff1): (43, "SlicedOneByteStringMap"),
-  ("read_only_space", 0x02041): (34, "ExternalStringMap"),
-  ("read_only_space", 0x02091): (42, "ExternalOneByteStringMap"),
-  ("read_only_space", 0x020e1): (50, "UncachedExternalStringMap"),
-  ("read_only_space", 0x02131): (0, "InternalizedStringMap"),
-  ("read_only_space", 0x02181): (2, "ExternalInternalizedStringMap"),
-  ("read_only_space", 0x021d1): (10, "ExternalOneByteInternalizedStringMap"),
-  ("read_only_space", 0x02221): (18, "UncachedExternalInternalizedStringMap"),
-  ("read_only_space", 0x02271): (26, "UncachedExternalOneByteInternalizedStringMap"),
-  ("read_only_space", 0x022c1): (58, "UncachedExternalOneByteStringMap"),
-  ("read_only_space", 0x02311): (76, "FixedUint8ArrayMap"),
-  ("read_only_space", 0x02361): (75, "FixedInt8ArrayMap"),
-  ("read_only_space", 0x023b1): (78, "FixedUint16ArrayMap"),
-  ("read_only_space", 0x02401): (77, "FixedInt16ArrayMap"),
-  ("read_only_space", 0x02451): (80, "FixedUint32ArrayMap"),
-  ("read_only_space", 0x024a1): (79, "FixedInt32ArrayMap"),
-  ("read_only_space", 0x024f1): (81, "FixedFloat32ArrayMap"),
-  ("read_only_space", 0x02541): (82, "FixedFloat64ArrayMap"),
-  ("read_only_space", 0x02591): (83, "FixedUint8ClampedArrayMap"),
-  ("read_only_space", 0x025e1): (85, "FixedBigUint64ArrayMap"),
-  ("read_only_space", 0x02631): (84, "FixedBigInt64ArrayMap"),
-  ("read_only_space", 0x02681): (67, "SelfReferenceMarkerMap"),
-  ("read_only_space", 0x026e9): (98, "EnumCacheMap"),
-  ("read_only_space", 0x02789): (115, "ArrayBoilerplateDescriptionMap"),
-  ("read_only_space", 0x02ad9): (101, "InterceptorInfoMap"),
-  ("read_only_space", 0x05111): (89, "AccessCheckInfoMap"),
-  ("read_only_space", 0x05161): (90, "AccessorInfoMap"),
-  ("read_only_space", 0x051b1): (91, "AccessorPairMap"),
-  ("read_only_space", 0x05201): (92, "AliasedArgumentsEntryMap"),
-  ("read_only_space", 0x05251): (93, "AllocationMementoMap"),
-  ("read_only_space", 0x052a1): (94, "AsmWasmDataMap"),
-  ("read_only_space", 0x052f1): (95, "AsyncGeneratorRequestMap"),
-  ("read_only_space", 0x05341): (96, "ClassPositionsMap"),
-  ("read_only_space", 0x05391): (97, "DebugInfoMap"),
-  ("read_only_space", 0x053e1): (99, "FunctionTemplateInfoMap"),
-  ("read_only_space", 0x05431): (100, "FunctionTemplateRareDataMap"),
-  ("read_only_space", 0x05481): (102, "InterpreterDataMap"),
-  ("read_only_space", 0x054d1): (103, "ModuleInfoEntryMap"),
-  ("read_only_space", 0x05521): (104, "ModuleMap"),
-  ("read_only_space", 0x05571): (105, "ObjectTemplateInfoMap"),
-  ("read_only_space", 0x055c1): (106, "PromiseCapabilityMap"),
-  ("read_only_space", 0x05611): (107, "PromiseReactionMap"),
-  ("read_only_space", 0x05661): (108, "PrototypeInfoMap"),
-  ("read_only_space", 0x056b1): (109, "ScriptMap"),
-  ("read_only_space", 0x05701): (110, "SourcePositionTableWithFrameCacheMap"),
-  ("read_only_space", 0x05751): (111, "StackFrameInfoMap"),
-  ("read_only_space", 0x057a1): (112, "StackTraceFrameMap"),
-  ("read_only_space", 0x057f1): (113, "Tuple2Map"),
-  ("read_only_space", 0x05841): (114, "Tuple3Map"),
-  ("read_only_space", 0x05891): (116, "WasmCapiFunctionDataMap"),
-  ("read_only_space", 0x058e1): (117, "WasmDebugInfoMap"),
-  ("read_only_space", 0x05931): (118, "WasmExceptionTagMap"),
-  ("read_only_space", 0x05981): (119, "WasmExportedFunctionDataMap"),
-  ("read_only_space", 0x059d1): (120, "CallableTaskMap"),
-  ("read_only_space", 0x05a21): (121, "CallbackTaskMap"),
-  ("read_only_space", 0x05a71): (122, "PromiseFulfillReactionJobTaskMap"),
-  ("read_only_space", 0x05ac1): (123, "PromiseRejectReactionJobTaskMap"),
-  ("read_only_space", 0x05b11): (124, "PromiseResolveThenableJobTaskMap"),
-  ("read_only_space", 0x05b61): (125, "FinalizationGroupCleanupJobTaskMap"),
-  ("read_only_space", 0x05bb1): (126, "AllocationSiteWithWeakNextMap"),
-  ("read_only_space", 0x05c01): (126, "AllocationSiteWithoutWeakNextMap"),
-  ("read_only_space", 0x05c51): (161, "LoadHandler1Map"),
-  ("read_only_space", 0x05ca1): (161, "LoadHandler2Map"),
-  ("read_only_space", 0x05cf1): (161, "LoadHandler3Map"),
-  ("read_only_space", 0x05d41): (169, "StoreHandler0Map"),
-  ("read_only_space", 0x05d91): (169, "StoreHandler1Map"),
-  ("read_only_space", 0x05de1): (169, "StoreHandler2Map"),
-  ("read_only_space", 0x05e31): (169, "StoreHandler3Map"),
+  ("read_only_space", 0x00169): (68, "MetaMap"),
+  ("read_only_space", 0x001ad): (67, "NullMap"),
+  ("read_only_space", 0x001e5): (158, "DescriptorArrayMap"),
+  ("read_only_space", 0x00215): (153, "WeakFixedArrayMap"),
+  ("read_only_space", 0x0023d): (88, "OnePointerFillerMap"),
+  ("read_only_space", 0x00265): (88, "TwoPointerFillerMap"),
+  ("read_only_space", 0x002a9): (67, "UninitializedMap"),
+  ("read_only_space", 0x002ed): (8, "OneByteInternalizedStringMap"),
+  ("read_only_space", 0x00349): (67, "UndefinedMap"),
+  ("read_only_space", 0x0037d): (65, "HeapNumberMap"),
+  ("read_only_space", 0x003c1): (67, "TheHoleMap"),
+  ("read_only_space", 0x00421): (67, "BooleanMap"),
+  ("read_only_space", 0x004a9): (72, "ByteArrayMap"),
+  ("read_only_space", 0x004d1): (128, "FixedArrayMap"),
+  ("read_only_space", 0x004f9): (128, "FixedCOWArrayMap"),
+  ("read_only_space", 0x00521): (131, "HashTableMap"),
+  ("read_only_space", 0x00549): (64, "SymbolMap"),
+  ("read_only_space", 0x00571): (40, "OneByteStringMap"),
+  ("read_only_space", 0x00599): (141, "ScopeInfoMap"),
+  ("read_only_space", 0x005c1): (165, "SharedFunctionInfoMap"),
+  ("read_only_space", 0x005e9): (69, "CodeMap"),
+  ("read_only_space", 0x00611): (148, "FunctionContextMap"),
+  ("read_only_space", 0x00639): (156, "CellMap"),
+  ("read_only_space", 0x00661): (164, "GlobalPropertyCellMap"),
+  ("read_only_space", 0x00689): (71, "ForeignMap"),
+  ("read_only_space", 0x006b1): (154, "TransitionArrayMap"),
+  ("read_only_space", 0x006d9): (160, "FeedbackVectorMap"),
+  ("read_only_space", 0x0072d): (67, "ArgumentsMarkerMap"),
+  ("read_only_space", 0x0078d): (67, "ExceptionMap"),
+  ("read_only_space", 0x007e9): (67, "TerminationExceptionMap"),
+  ("read_only_space", 0x00851): (67, "OptimizedOutMap"),
+  ("read_only_space", 0x008b1): (67, "StaleRegisterMap"),
+  ("read_only_space", 0x008f5): (150, "NativeContextMap"),
+  ("read_only_space", 0x0091d): (149, "ModuleContextMap"),
+  ("read_only_space", 0x00945): (147, "EvalContextMap"),
+  ("read_only_space", 0x0096d): (151, "ScriptContextMap"),
+  ("read_only_space", 0x00995): (143, "AwaitContextMap"),
+  ("read_only_space", 0x009bd): (144, "BlockContextMap"),
+  ("read_only_space", 0x009e5): (145, "CatchContextMap"),
+  ("read_only_space", 0x00a0d): (152, "WithContextMap"),
+  ("read_only_space", 0x00a35): (146, "DebugEvaluateContextMap"),
+  ("read_only_space", 0x00a5d): (142, "ScriptContextTableMap"),
+  ("read_only_space", 0x00a85): (130, "ClosureFeedbackCellArrayMap"),
+  ("read_only_space", 0x00aad): (87, "FeedbackMetadataArrayMap"),
+  ("read_only_space", 0x00ad5): (128, "ArrayListMap"),
+  ("read_only_space", 0x00afd): (66, "BigIntMap"),
+  ("read_only_space", 0x00b25): (129, "ObjectBoilerplateDescriptionMap"),
+  ("read_only_space", 0x00b4d): (73, "BytecodeArrayMap"),
+  ("read_only_space", 0x00b75): (157, "CodeDataContainerMap"),
+  ("read_only_space", 0x00b9d): (86, "FixedDoubleArrayMap"),
+  ("read_only_space", 0x00bc5): (136, "GlobalDictionaryMap"),
+  ("read_only_space", 0x00bed): (159, "ManyClosuresCellMap"),
+  ("read_only_space", 0x00c15): (128, "ModuleInfoMap"),
+  ("read_only_space", 0x00c3d): (70, "MutableHeapNumberMap"),
+  ("read_only_space", 0x00c65): (135, "NameDictionaryMap"),
+  ("read_only_space", 0x00c8d): (159, "NoClosuresCellMap"),
+  ("read_only_space", 0x00cb5): (137, "NumberDictionaryMap"),
+  ("read_only_space", 0x00cdd): (159, "OneClosureCellMap"),
+  ("read_only_space", 0x00d05): (132, "OrderedHashMapMap"),
+  ("read_only_space", 0x00d2d): (133, "OrderedHashSetMap"),
+  ("read_only_space", 0x00d55): (134, "OrderedNameDictionaryMap"),
+  ("read_only_space", 0x00d7d): (162, "PreparseDataMap"),
+  ("read_only_space", 0x00da5): (163, "PropertyArrayMap"),
+  ("read_only_space", 0x00dcd): (155, "SideEffectCallHandlerInfoMap"),
+  ("read_only_space", 0x00df5): (155, "SideEffectFreeCallHandlerInfoMap"),
+  ("read_only_space", 0x00e1d): (155, "NextCallSideEffectFreeCallHandlerInfoMap"),
+  ("read_only_space", 0x00e45): (138, "SimpleNumberDictionaryMap"),
+  ("read_only_space", 0x00e6d): (128, "SloppyArgumentsElementsMap"),
+  ("read_only_space", 0x00e95): (166, "SmallOrderedHashMapMap"),
+  ("read_only_space", 0x00ebd): (167, "SmallOrderedHashSetMap"),
+  ("read_only_space", 0x00ee5): (168, "SmallOrderedNameDictionaryMap"),
+  ("read_only_space", 0x00f0d): (139, "StringTableMap"),
+  ("read_only_space", 0x00f35): (170, "UncompiledDataWithoutPreparseDataMap"),
+  ("read_only_space", 0x00f5d): (171, "UncompiledDataWithPreparseDataMap"),
+  ("read_only_space", 0x00f85): (172, "WeakArrayListMap"),
+  ("read_only_space", 0x00fad): (140, "EphemeronHashTableMap"),
+  ("read_only_space", 0x00fd5): (127, "EmbedderDataArrayMap"),
+  ("read_only_space", 0x00ffd): (173, "WeakCellMap"),
+  ("read_only_space", 0x01025): (58, "NativeSourceStringMap"),
+  ("read_only_space", 0x0104d): (32, "StringMap"),
+  ("read_only_space", 0x01075): (41, "ConsOneByteStringMap"),
+  ("read_only_space", 0x0109d): (33, "ConsStringMap"),
+  ("read_only_space", 0x010c5): (45, "ThinOneByteStringMap"),
+  ("read_only_space", 0x010ed): (37, "ThinStringMap"),
+  ("read_only_space", 0x01115): (35, "SlicedStringMap"),
+  ("read_only_space", 0x0113d): (43, "SlicedOneByteStringMap"),
+  ("read_only_space", 0x01165): (34, "ExternalStringMap"),
+  ("read_only_space", 0x0118d): (42, "ExternalOneByteStringMap"),
+  ("read_only_space", 0x011b5): (50, "UncachedExternalStringMap"),
+  ("read_only_space", 0x011dd): (0, "InternalizedStringMap"),
+  ("read_only_space", 0x01205): (2, "ExternalInternalizedStringMap"),
+  ("read_only_space", 0x0122d): (10, "ExternalOneByteInternalizedStringMap"),
+  ("read_only_space", 0x01255): (18, "UncachedExternalInternalizedStringMap"),
+  ("read_only_space", 0x0127d): (26, "UncachedExternalOneByteInternalizedStringMap"),
+  ("read_only_space", 0x012a5): (58, "UncachedExternalOneByteStringMap"),
+  ("read_only_space", 0x012cd): (76, "FixedUint8ArrayMap"),
+  ("read_only_space", 0x012f5): (75, "FixedInt8ArrayMap"),
+  ("read_only_space", 0x0131d): (78, "FixedUint16ArrayMap"),
+  ("read_only_space", 0x01345): (77, "FixedInt16ArrayMap"),
+  ("read_only_space", 0x0136d): (80, "FixedUint32ArrayMap"),
+  ("read_only_space", 0x01395): (79, "FixedInt32ArrayMap"),
+  ("read_only_space", 0x013bd): (81, "FixedFloat32ArrayMap"),
+  ("read_only_space", 0x013e5): (82, "FixedFloat64ArrayMap"),
+  ("read_only_space", 0x0140d): (83, "FixedUint8ClampedArrayMap"),
+  ("read_only_space", 0x01435): (85, "FixedBigUint64ArrayMap"),
+  ("read_only_space", 0x0145d): (84, "FixedBigInt64ArrayMap"),
+  ("read_only_space", 0x01485): (67, "SelfReferenceMarkerMap"),
+  ("read_only_space", 0x014b9): (98, "EnumCacheMap"),
+  ("read_only_space", 0x01509): (115, "ArrayBoilerplateDescriptionMap"),
+  ("read_only_space", 0x016e1): (101, "InterceptorInfoMap"),
+  ("read_only_space", 0x03445): (89, "AccessCheckInfoMap"),
+  ("read_only_space", 0x0346d): (90, "AccessorInfoMap"),
+  ("read_only_space", 0x03495): (91, "AccessorPairMap"),
+  ("read_only_space", 0x034bd): (92, "AliasedArgumentsEntryMap"),
+  ("read_only_space", 0x034e5): (93, "AllocationMementoMap"),
+  ("read_only_space", 0x0350d): (94, "AsmWasmDataMap"),
+  ("read_only_space", 0x03535): (95, "AsyncGeneratorRequestMap"),
+  ("read_only_space", 0x0355d): (96, "ClassPositionsMap"),
+  ("read_only_space", 0x03585): (97, "DebugInfoMap"),
+  ("read_only_space", 0x035ad): (99, "FunctionTemplateInfoMap"),
+  ("read_only_space", 0x035d5): (100, "FunctionTemplateRareDataMap"),
+  ("read_only_space", 0x035fd): (102, "InterpreterDataMap"),
+  ("read_only_space", 0x03625): (103, "ModuleInfoEntryMap"),
+  ("read_only_space", 0x0364d): (104, "ModuleMap"),
+  ("read_only_space", 0x03675): (105, "ObjectTemplateInfoMap"),
+  ("read_only_space", 0x0369d): (106, "PromiseCapabilityMap"),
+  ("read_only_space", 0x036c5): (107, "PromiseReactionMap"),
+  ("read_only_space", 0x036ed): (108, "PrototypeInfoMap"),
+  ("read_only_space", 0x03715): (109, "ScriptMap"),
+  ("read_only_space", 0x0373d): (110, "SourcePositionTableWithFrameCacheMap"),
+  ("read_only_space", 0x03765): (111, "StackFrameInfoMap"),
+  ("read_only_space", 0x0378d): (112, "StackTraceFrameMap"),
+  ("read_only_space", 0x037b5): (113, "Tuple2Map"),
+  ("read_only_space", 0x037dd): (114, "Tuple3Map"),
+  ("read_only_space", 0x03805): (116, "WasmCapiFunctionDataMap"),
+  ("read_only_space", 0x0382d): (117, "WasmDebugInfoMap"),
+  ("read_only_space", 0x03855): (118, "WasmExceptionTagMap"),
+  ("read_only_space", 0x0387d): (119, "WasmExportedFunctionDataMap"),
+  ("read_only_space", 0x038a5): (120, "CallableTaskMap"),
+  ("read_only_space", 0x038cd): (121, "CallbackTaskMap"),
+  ("read_only_space", 0x038f5): (122, "PromiseFulfillReactionJobTaskMap"),
+  ("read_only_space", 0x0391d): (123, "PromiseRejectReactionJobTaskMap"),
+  ("read_only_space", 0x03945): (124, "PromiseResolveThenableJobTaskMap"),
+  ("read_only_space", 0x0396d): (125, "FinalizationGroupCleanupJobTaskMap"),
+  ("read_only_space", 0x03995): (126, "AllocationSiteWithWeakNextMap"),
+  ("read_only_space", 0x039bd): (126, "AllocationSiteWithoutWeakNextMap"),
+  ("read_only_space", 0x039e5): (161, "LoadHandler1Map"),
+  ("read_only_space", 0x03a0d): (161, "LoadHandler2Map"),
+  ("read_only_space", 0x03a35): (161, "LoadHandler3Map"),
+  ("read_only_space", 0x03a5d): (169, "StoreHandler0Map"),
+  ("read_only_space", 0x03a85): (169, "StoreHandler1Map"),
+  ("read_only_space", 0x03aad): (169, "StoreHandler2Map"),
+  ("read_only_space", 0x03ad5): (169, "StoreHandler3Map"),
   ("map_space", 0x00141): (1057, "ExternalMap"),
-  ("map_space", 0x00191): (1073, "JSMessageObjectMap"),
+  ("map_space", 0x00169): (1073, "JSMessageObjectMap"),
 }
 
 # List of known V8 objects.
 KNOWN_OBJECTS = {
-  ("read_only_space", 0x001e1): "NullValue",
-  ("read_only_space", 0x00261): "EmptyDescriptorArray",
-  ("read_only_space", 0x002c9): "EmptyWeakFixedArray",
-  ("read_only_space", 0x003c9): "UninitializedValue",
-  ("read_only_space", 0x004d9): "UndefinedValue",
-  ("read_only_space", 0x00559): "NanValue",
-  ("read_only_space", 0x005b9): "TheHoleValue",
-  ("read_only_space", 0x00651): "HoleNanValue",
-  ("read_only_space", 0x00661): "TrueValue",
-  ("read_only_space", 0x00711): "FalseValue",
-  ("read_only_space", 0x00759): "empty_string",
-  ("read_only_space", 0x00c19): "EmptyScopeInfo",
-  ("read_only_space", 0x00c29): "EmptyFixedArray",
-  ("read_only_space", 0x00c39): "ArgumentsMarker",
-  ("read_only_space", 0x00cd9): "Exception",
-  ("read_only_space", 0x00d79): "TerminationException",
-  ("read_only_space", 0x00e21): "OptimizedOut",
-  ("read_only_space", 0x00ec1): "StaleRegister",
-  ("read_only_space", 0x026d1): "EmptyEnumCache",
-  ("read_only_space", 0x02739): "EmptyPropertyArray",
-  ("read_only_space", 0x02749): "EmptyByteArray",
-  ("read_only_space", 0x02759): "EmptyObjectBoilerplateDescription",
-  ("read_only_space", 0x02771): "EmptyArrayBoilerplateDescription",
-  ("read_only_space", 0x027d9): "EmptyClosureFeedbackCellArray",
-  ("read_only_space", 0x027e9): "EmptyFixedUint8Array",
-  ("read_only_space", 0x02809): "EmptyFixedInt8Array",
-  ("read_only_space", 0x02829): "EmptyFixedUint16Array",
-  ("read_only_space", 0x02849): "EmptyFixedInt16Array",
-  ("read_only_space", 0x02869): "EmptyFixedUint32Array",
-  ("read_only_space", 0x02889): "EmptyFixedInt32Array",
-  ("read_only_space", 0x028a9): "EmptyFixedFloat32Array",
-  ("read_only_space", 0x028c9): "EmptyFixedFloat64Array",
-  ("read_only_space", 0x028e9): "EmptyFixedUint8ClampedArray",
-  ("read_only_space", 0x02909): "EmptyFixedBigUint64Array",
-  ("read_only_space", 0x02929): "EmptyFixedBigInt64Array",
-  ("read_only_space", 0x02949): "EmptySloppyArgumentsElements",
-  ("read_only_space", 0x02969): "EmptySlowElementDictionary",
-  ("read_only_space", 0x029b1): "EmptyOrderedHashMap",
-  ("read_only_space", 0x029d9): "EmptyOrderedHashSet",
-  ("read_only_space", 0x02a01): "EmptyFeedbackMetadata",
-  ("read_only_space", 0x02a11): "EmptyPropertyCell",
-  ("read_only_space", 0x02a39): "EmptyPropertyDictionary",
-  ("read_only_space", 0x02a89): "NoOpInterceptorInfo",
-  ("read_only_space", 0x02b29): "EmptyWeakArrayList",
-  ("read_only_space", 0x02b41): "InfinityValue",
-  ("read_only_space", 0x02b51): "MinusZeroValue",
-  ("read_only_space", 0x02b61): "MinusInfinityValue",
-  ("read_only_space", 0x02b71): "SelfReferenceMarker",
-  ("read_only_space", 0x02bc9): "OffHeapTrampolineRelocationInfo",
-  ("read_only_space", 0x02be1): "HashSeed",
+  ("read_only_space", 0x00191): "NullValue",
+  ("read_only_space", 0x001d5): "EmptyDescriptorArray",
+  ("read_only_space", 0x0020d): "EmptyWeakFixedArray",
+  ("read_only_space", 0x0028d): "UninitializedValue",
+  ("read_only_space", 0x0032d): "UndefinedValue",
+  ("read_only_space", 0x00371): "NanValue",
+  ("read_only_space", 0x003a5): "TheHoleValue",
+  ("read_only_space", 0x003f9): "HoleNanValue",
+  ("read_only_space", 0x00405): "TrueValue",
+  ("read_only_space", 0x0046d): "FalseValue",
+  ("read_only_space", 0x0049d): "empty_string",
+  ("read_only_space", 0x00701): "EmptyScopeInfo",
+  ("read_only_space", 0x00709): "EmptyFixedArray",
+  ("read_only_space", 0x00711): "ArgumentsMarker",
+  ("read_only_space", 0x00771): "Exception",
+  ("read_only_space", 0x007cd): "TerminationException",
+  ("read_only_space", 0x00835): "OptimizedOut",
+  ("read_only_space", 0x00895): "StaleRegister",
+  ("read_only_space", 0x014ad): "EmptyEnumCache",
+  ("read_only_space", 0x014e1): "EmptyPropertyArray",
+  ("read_only_space", 0x014e9): "EmptyByteArray",
+  ("read_only_space", 0x014f1): "EmptyObjectBoilerplateDescription",
+  ("read_only_space", 0x014fd): "EmptyArrayBoilerplateDescription",
+  ("read_only_space", 0x01531): "EmptyClosureFeedbackCellArray",
+  ("read_only_space", 0x01539): "EmptyFixedUint8Array",
+  ("read_only_space", 0x0154d): "EmptyFixedInt8Array",
+  ("read_only_space", 0x01561): "EmptyFixedUint16Array",
+  ("read_only_space", 0x01575): "EmptyFixedInt16Array",
+  ("read_only_space", 0x01589): "EmptyFixedUint32Array",
+  ("read_only_space", 0x0159d): "EmptyFixedInt32Array",
+  ("read_only_space", 0x015b1): "EmptyFixedFloat32Array",
+  ("read_only_space", 0x015c5): "EmptyFixedFloat64Array",
+  ("read_only_space", 0x015d9): "EmptyFixedUint8ClampedArray",
+  ("read_only_space", 0x015ed): "EmptyFixedBigUint64Array",
+  ("read_only_space", 0x01601): "EmptyFixedBigInt64Array",
+  ("read_only_space", 0x01615): "EmptySloppyArgumentsElements",
+  ("read_only_space", 0x01625): "EmptySlowElementDictionary",
+  ("read_only_space", 0x01649): "EmptyOrderedHashMap",
+  ("read_only_space", 0x0165d): "EmptyOrderedHashSet",
+  ("read_only_space", 0x01671): "EmptyFeedbackMetadata",
+  ("read_only_space", 0x0167d): "EmptyPropertyCell",
+  ("read_only_space", 0x01691): "EmptyPropertyDictionary",
+  ("read_only_space", 0x016b9): "NoOpInterceptorInfo",
+  ("read_only_space", 0x01709): "EmptyWeakArrayList",
+  ("read_only_space", 0x01715): "InfinityValue",
+  ("read_only_space", 0x01721): "MinusZeroValue",
+  ("read_only_space", 0x0172d): "MinusInfinityValue",
+  ("read_only_space", 0x01739): "SelfReferenceMarker",
+  ("read_only_space", 0x01779): "OffHeapTrampolineRelocationInfo",
+  ("read_only_space", 0x01785): "HashSeed",
   ("old_space", 0x00141): "ArgumentsIteratorAccessor",
-  ("old_space", 0x001b1): "ArrayLengthAccessor",
-  ("old_space", 0x00221): "BoundFunctionLengthAccessor",
-  ("old_space", 0x00291): "BoundFunctionNameAccessor",
-  ("old_space", 0x00301): "ErrorStackAccessor",
-  ("old_space", 0x00371): "FunctionArgumentsAccessor",
-  ("old_space", 0x003e1): "FunctionCallerAccessor",
-  ("old_space", 0x00451): "FunctionNameAccessor",
-  ("old_space", 0x004c1): "FunctionLengthAccessor",
-  ("old_space", 0x00531): "FunctionPrototypeAccessor",
-  ("old_space", 0x005a1): "StringLengthAccessor",
-  ("old_space", 0x00611): "InvalidPrototypeValidityCell",
-  ("old_space", 0x00621): "EmptyScript",
-  ("old_space", 0x006a1): "ManyClosuresCell",
-  ("old_space", 0x006b9): "ArrayConstructorProtector",
-  ("old_space", 0x006c9): "NoElementsProtector",
-  ("old_space", 0x006f1): "IsConcatSpreadableProtector",
-  ("old_space", 0x00701): "ArraySpeciesProtector",
-  ("old_space", 0x00729): "TypedArraySpeciesProtector",
-  ("old_space", 0x00751): "RegExpSpeciesProtector",
-  ("old_space", 0x00779): "PromiseSpeciesProtector",
-  ("old_space", 0x007a1): "StringLengthProtector",
-  ("old_space", 0x007b1): "ArrayIteratorProtector",
-  ("old_space", 0x007d9): "ArrayBufferDetachingProtector",
-  ("old_space", 0x00801): "PromiseHookProtector",
-  ("old_space", 0x00829): "PromiseResolveProtector",
-  ("old_space", 0x00839): "MapIteratorProtector",
-  ("old_space", 0x00861): "PromiseThenProtector",
-  ("old_space", 0x00889): "SetIteratorProtector",
-  ("old_space", 0x008b1): "StringIteratorProtector",
-  ("old_space", 0x008d9): "SingleCharacterStringCache",
-  ("old_space", 0x010e9): "StringSplitCache",
-  ("old_space", 0x018f9): "RegExpMultipleCache",
-  ("old_space", 0x02109): "BuiltinsConstantsTable",
+  ("old_space", 0x00185): "ArrayLengthAccessor",
+  ("old_space", 0x001c9): "BoundFunctionLengthAccessor",
+  ("old_space", 0x0020d): "BoundFunctionNameAccessor",
+  ("old_space", 0x00251): "ErrorStackAccessor",
+  ("old_space", 0x00295): "FunctionArgumentsAccessor",
+  ("old_space", 0x002d9): "FunctionCallerAccessor",
+  ("old_space", 0x0031d): "FunctionNameAccessor",
+  ("old_space", 0x00361): "FunctionLengthAccessor",
+  ("old_space", 0x003a5): "FunctionPrototypeAccessor",
+  ("old_space", 0x003e9): "StringLengthAccessor",
+  ("old_space", 0x0042d): "InvalidPrototypeValidityCell",
+  ("old_space", 0x00435): "EmptyScript",
+  ("old_space", 0x00475): "ManyClosuresCell",
+  ("old_space", 0x00481): "ArrayConstructorProtector",
+  ("old_space", 0x00489): "NoElementsProtector",
+  ("old_space", 0x0049d): "IsConcatSpreadableProtector",
+  ("old_space", 0x004a5): "ArraySpeciesProtector",
+  ("old_space", 0x004b9): "TypedArraySpeciesProtector",
+  ("old_space", 0x004cd): "RegExpSpeciesProtector",
+  ("old_space", 0x004e1): "PromiseSpeciesProtector",
+  ("old_space", 0x004f5): "StringLengthProtector",
+  ("old_space", 0x004fd): "ArrayIteratorProtector",
+  ("old_space", 0x00511): "ArrayBufferDetachingProtector",
+  ("old_space", 0x00525): "PromiseHookProtector",
+  ("old_space", 0x00539): "PromiseResolveProtector",
+  ("old_space", 0x00541): "MapIteratorProtector",
+  ("old_space", 0x00555): "PromiseThenProtector",
+  ("old_space", 0x00569): "SetIteratorProtector",
+  ("old_space", 0x0057d): "StringIteratorProtector",
+  ("old_space", 0x00591): "SingleCharacterStringCache",
+  ("old_space", 0x00999): "StringSplitCache",
+  ("old_space", 0x00da1): "RegExpMultipleCache",
+  ("old_space", 0x011a9): "BuiltinsConstantsTable",
 }
 
 # List of known V8 Frame Markers.