[ptr-compr] Disable double fields unboxing

Double field unboxing optimization is incompatible with pointer compression so
we land this CL before enabling pointer compression in order to separate memory
and performance regressions caused by disabled double field unboxing from
pointer compression change.

Bug: v8:9799
Change-Id: Ic8118356496a3f351344215b409f9722de6c9355
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1835546
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64089}
This commit is contained in:
Igor Sheludko 2019-10-02 18:00:53 +02:00 committed by Commit Bot
parent 69bdc607fe
commit b271ea3c94
2 changed files with 193 additions and 193 deletions

View File

@ -77,7 +77,7 @@ constexpr int kStackSpaceRequiredForCompilation = 40;
// Determine whether double field unboxing feature is enabled.
#if V8_TARGET_ARCH_64_BIT && !defined(V8_COMPRESS_POINTERS)
#define V8_DOUBLE_FIELDS_UNBOXING true
#define V8_DOUBLE_FIELDS_UNBOXING false
#else
#define V8_DOUBLE_FIELDS_UNBOXING false
#endif

View File

@ -191,203 +191,203 @@ INSTANCE_TYPES = {
# List of known V8 maps.
KNOWN_MAPS = {
("read_only_space", 0x00121): (73, "FreeSpaceMap"),
("read_only_space", 0x00171): (68, "MetaMap"),
("read_only_space", 0x001f1): (67, "NullMap"),
("read_only_space", 0x00259): (153, "DescriptorArrayMap"),
("read_only_space", 0x002b9): (148, "WeakFixedArrayMap"),
("read_only_space", 0x00309): (76, "OnePointerFillerMap"),
("read_only_space", 0x00359): (76, "TwoPointerFillerMap"),
("read_only_space", 0x003d9): (67, "UninitializedMap"),
("read_only_space", 0x00449): (8, "OneByteInternalizedStringMap"),
("read_only_space", 0x004e9): (67, "UndefinedMap"),
("read_only_space", 0x00549): (65, "HeapNumberMap"),
("read_only_space", 0x005c9): (67, "TheHoleMap"),
("read_only_space", 0x00671): (67, "BooleanMap"),
("read_only_space", 0x00749): (71, "ByteArrayMap"),
("read_only_space", 0x00799): (123, "FixedArrayMap"),
("read_only_space", 0x007e9): (123, "FixedCOWArrayMap"),
("read_only_space", 0x00839): (126, "HashTableMap"),
("read_only_space", 0x00889): (64, "SymbolMap"),
("read_only_space", 0x008d9): (40, "OneByteStringMap"),
("read_only_space", 0x00929): (136, "ScopeInfoMap"),
("read_only_space", 0x00979): (160, "SharedFunctionInfoMap"),
("read_only_space", 0x009c9): (69, "CodeMap"),
("read_only_space", 0x00a19): (143, "FunctionContextMap"),
("read_only_space", 0x00a69): (151, "CellMap"),
("read_only_space", 0x00ab9): (159, "GlobalPropertyCellMap"),
("read_only_space", 0x00b09): (70, "ForeignMap"),
("read_only_space", 0x00b59): (149, "TransitionArrayMap"),
("read_only_space", 0x00ba9): (155, "FeedbackVectorMap"),
("read_only_space", 0x00c49): (67, "ArgumentsMarkerMap"),
("read_only_space", 0x00ce9): (67, "ExceptionMap"),
("read_only_space", 0x00d89): (67, "TerminationExceptionMap"),
("read_only_space", 0x00e31): (67, "OptimizedOutMap"),
("read_only_space", 0x00ed1): (67, "StaleRegisterMap"),
("read_only_space", 0x00f41): (145, "NativeContextMap"),
("read_only_space", 0x00f91): (144, "ModuleContextMap"),
("read_only_space", 0x00fe1): (142, "EvalContextMap"),
("read_only_space", 0x01031): (146, "ScriptContextMap"),
("read_only_space", 0x01081): (138, "AwaitContextMap"),
("read_only_space", 0x010d1): (139, "BlockContextMap"),
("read_only_space", 0x01121): (140, "CatchContextMap"),
("read_only_space", 0x01171): (147, "WithContextMap"),
("read_only_space", 0x011c1): (141, "DebugEvaluateContextMap"),
("read_only_space", 0x01211): (137, "ScriptContextTableMap"),
("read_only_space", 0x01261): (125, "ClosureFeedbackCellArrayMap"),
("read_only_space", 0x012b1): (75, "FeedbackMetadataArrayMap"),
("read_only_space", 0x01301): (123, "ArrayListMap"),
("read_only_space", 0x01351): (66, "BigIntMap"),
("read_only_space", 0x013a1): (124, "ObjectBoilerplateDescriptionMap"),
("read_only_space", 0x013f1): (72, "BytecodeArrayMap"),
("read_only_space", 0x01441): (152, "CodeDataContainerMap"),
("read_only_space", 0x01491): (74, "FixedDoubleArrayMap"),
("read_only_space", 0x014e1): (131, "GlobalDictionaryMap"),
("read_only_space", 0x01531): (154, "ManyClosuresCellMap"),
("read_only_space", 0x01581): (123, "ModuleInfoMap"),
("read_only_space", 0x015d1): (130, "NameDictionaryMap"),
("read_only_space", 0x01621): (154, "NoClosuresCellMap"),
("read_only_space", 0x01671): (132, "NumberDictionaryMap"),
("read_only_space", 0x016c1): (154, "OneClosureCellMap"),
("read_only_space", 0x01711): (127, "OrderedHashMapMap"),
("read_only_space", 0x01761): (128, "OrderedHashSetMap"),
("read_only_space", 0x017b1): (129, "OrderedNameDictionaryMap"),
("read_only_space", 0x01801): (157, "PreparseDataMap"),
("read_only_space", 0x01851): (158, "PropertyArrayMap"),
("read_only_space", 0x018a1): (150, "SideEffectCallHandlerInfoMap"),
("read_only_space", 0x018f1): (150, "SideEffectFreeCallHandlerInfoMap"),
("read_only_space", 0x01941): (150, "NextCallSideEffectFreeCallHandlerInfoMap"),
("read_only_space", 0x01991): (133, "SimpleNumberDictionaryMap"),
("read_only_space", 0x019e1): (123, "SloppyArgumentsElementsMap"),
("read_only_space", 0x01a31): (161, "SmallOrderedHashMapMap"),
("read_only_space", 0x01a81): (162, "SmallOrderedHashSetMap"),
("read_only_space", 0x01ad1): (163, "SmallOrderedNameDictionaryMap"),
("read_only_space", 0x01b21): (119, "SourceTextModuleMap"),
("read_only_space", 0x01b71): (134, "StringTableMap"),
("read_only_space", 0x01bc1): (120, "SyntheticModuleMap"),
("read_only_space", 0x01c11): (165, "UncompiledDataWithoutPreparseDataMap"),
("read_only_space", 0x01c61): (166, "UncompiledDataWithPreparseDataMap"),
("read_only_space", 0x01cb1): (167, "WeakArrayListMap"),
("read_only_space", 0x01d01): (135, "EphemeronHashTableMap"),
("read_only_space", 0x01d51): (122, "EmbedderDataArrayMap"),
("read_only_space", 0x01da1): (168, "WeakCellMap"),
("read_only_space", 0x01df1): (58, "NativeSourceStringMap"),
("read_only_space", 0x01e41): (32, "StringMap"),
("read_only_space", 0x01e91): (41, "ConsOneByteStringMap"),
("read_only_space", 0x01ee1): (33, "ConsStringMap"),
("read_only_space", 0x01f31): (45, "ThinOneByteStringMap"),
("read_only_space", 0x01f81): (37, "ThinStringMap"),
("read_only_space", 0x01fd1): (35, "SlicedStringMap"),
("read_only_space", 0x02021): (43, "SlicedOneByteStringMap"),
("read_only_space", 0x02071): (34, "ExternalStringMap"),
("read_only_space", 0x020c1): (42, "ExternalOneByteStringMap"),
("read_only_space", 0x02111): (50, "UncachedExternalStringMap"),
("read_only_space", 0x02161): (0, "InternalizedStringMap"),
("read_only_space", 0x021b1): (2, "ExternalInternalizedStringMap"),
("read_only_space", 0x02201): (10, "ExternalOneByteInternalizedStringMap"),
("read_only_space", 0x02251): (18, "UncachedExternalInternalizedStringMap"),
("read_only_space", 0x022a1): (26, "UncachedExternalOneByteInternalizedStringMap"),
("read_only_space", 0x022f1): (58, "UncachedExternalOneByteStringMap"),
("read_only_space", 0x02341): (67, "SelfReferenceMarkerMap"),
("read_only_space", 0x023a9): (87, "EnumCacheMap"),
("read_only_space", 0x02449): (82, "ArrayBoilerplateDescriptionMap"),
("read_only_space", 0x02639): (90, "InterceptorInfoMap"),
("read_only_space", 0x04f79): (77, "AccessCheckInfoMap"),
("read_only_space", 0x04fc9): (78, "AccessorInfoMap"),
("read_only_space", 0x05019): (79, "AccessorPairMap"),
("read_only_space", 0x05069): (80, "AliasedArgumentsEntryMap"),
("read_only_space", 0x050b9): (81, "AllocationMementoMap"),
("read_only_space", 0x05109): (83, "AsmWasmDataMap"),
("read_only_space", 0x05159): (84, "AsyncGeneratorRequestMap"),
("read_only_space", 0x051a9): (85, "ClassPositionsMap"),
("read_only_space", 0x051f9): (86, "DebugInfoMap"),
("read_only_space", 0x05249): (88, "FunctionTemplateInfoMap"),
("read_only_space", 0x05299): (89, "FunctionTemplateRareDataMap"),
("read_only_space", 0x052e9): (91, "InterpreterDataMap"),
("read_only_space", 0x05339): (92, "ObjectTemplateInfoMap"),
("read_only_space", 0x05389): (93, "PromiseCapabilityMap"),
("read_only_space", 0x053d9): (94, "PromiseReactionMap"),
("read_only_space", 0x05429): (95, "PrototypeInfoMap"),
("read_only_space", 0x05479): (96, "ScriptMap"),
("read_only_space", 0x054c9): (97, "SourcePositionTableWithFrameCacheMap"),
("read_only_space", 0x05519): (98, "SourceTextModuleInfoEntryMap"),
("read_only_space", 0x05569): (99, "StackFrameInfoMap"),
("read_only_space", 0x055b9): (100, "StackTraceFrameMap"),
("read_only_space", 0x05609): (101, "TemplateObjectDescriptionMap"),
("read_only_space", 0x05659): (102, "Tuple2Map"),
("read_only_space", 0x056a9): (103, "Tuple3Map"),
("read_only_space", 0x056f9): (104, "WasmCapiFunctionDataMap"),
("read_only_space", 0x05749): (105, "WasmDebugInfoMap"),
("read_only_space", 0x05799): (106, "WasmExceptionTagMap"),
("read_only_space", 0x057e9): (107, "WasmExportedFunctionDataMap"),
("read_only_space", 0x05839): (108, "WasmIndirectFunctionTableMap"),
("read_only_space", 0x05889): (109, "WasmJSFunctionDataMap"),
("read_only_space", 0x058d9): (110, "CallableTaskMap"),
("read_only_space", 0x05929): (111, "CallbackTaskMap"),
("read_only_space", 0x05979): (112, "PromiseFulfillReactionJobTaskMap"),
("read_only_space", 0x059c9): (113, "PromiseRejectReactionJobTaskMap"),
("read_only_space", 0x05a19): (114, "PromiseResolveThenableJobTaskMap"),
("read_only_space", 0x05a69): (115, "InternalClassMap"),
("read_only_space", 0x05ab9): (116, "SmiPairMap"),
("read_only_space", 0x05b09): (117, "SmiBoxMap"),
("read_only_space", 0x05b59): (118, "SortStateMap"),
("read_only_space", 0x05ba9): (121, "AllocationSiteWithWeakNextMap"),
("read_only_space", 0x05bf9): (121, "AllocationSiteWithoutWeakNextMap"),
("read_only_space", 0x05c49): (156, "LoadHandler1Map"),
("read_only_space", 0x05c99): (156, "LoadHandler2Map"),
("read_only_space", 0x05ce9): (156, "LoadHandler3Map"),
("read_only_space", 0x05d39): (164, "StoreHandler0Map"),
("read_only_space", 0x05d89): (164, "StoreHandler1Map"),
("read_only_space", 0x05dd9): (164, "StoreHandler2Map"),
("read_only_space", 0x05e29): (164, "StoreHandler3Map"),
("read_only_space", 0x00169): (68, "MetaMap"),
("read_only_space", 0x001e1): (67, "NullMap"),
("read_only_space", 0x00241): (153, "DescriptorArrayMap"),
("read_only_space", 0x00299): (148, "WeakFixedArrayMap"),
("read_only_space", 0x002e1): (76, "OnePointerFillerMap"),
("read_only_space", 0x00329): (76, "TwoPointerFillerMap"),
("read_only_space", 0x003a1): (67, "UninitializedMap"),
("read_only_space", 0x00409): (8, "OneByteInternalizedStringMap"),
("read_only_space", 0x004a1): (67, "UndefinedMap"),
("read_only_space", 0x004f9): (65, "HeapNumberMap"),
("read_only_space", 0x00571): (67, "TheHoleMap"),
("read_only_space", 0x00611): (67, "BooleanMap"),
("read_only_space", 0x006e1): (71, "ByteArrayMap"),
("read_only_space", 0x00729): (123, "FixedArrayMap"),
("read_only_space", 0x00771): (123, "FixedCOWArrayMap"),
("read_only_space", 0x007b9): (126, "HashTableMap"),
("read_only_space", 0x00801): (64, "SymbolMap"),
("read_only_space", 0x00849): (40, "OneByteStringMap"),
("read_only_space", 0x00891): (136, "ScopeInfoMap"),
("read_only_space", 0x008d9): (160, "SharedFunctionInfoMap"),
("read_only_space", 0x00921): (69, "CodeMap"),
("read_only_space", 0x00969): (143, "FunctionContextMap"),
("read_only_space", 0x009b1): (151, "CellMap"),
("read_only_space", 0x009f9): (159, "GlobalPropertyCellMap"),
("read_only_space", 0x00a41): (70, "ForeignMap"),
("read_only_space", 0x00a89): (149, "TransitionArrayMap"),
("read_only_space", 0x00ad1): (155, "FeedbackVectorMap"),
("read_only_space", 0x00b69): (67, "ArgumentsMarkerMap"),
("read_only_space", 0x00c01): (67, "ExceptionMap"),
("read_only_space", 0x00c99): (67, "TerminationExceptionMap"),
("read_only_space", 0x00d39): (67, "OptimizedOutMap"),
("read_only_space", 0x00dd1): (67, "StaleRegisterMap"),
("read_only_space", 0x00e39): (145, "NativeContextMap"),
("read_only_space", 0x00e81): (144, "ModuleContextMap"),
("read_only_space", 0x00ec9): (142, "EvalContextMap"),
("read_only_space", 0x00f11): (146, "ScriptContextMap"),
("read_only_space", 0x00f59): (138, "AwaitContextMap"),
("read_only_space", 0x00fa1): (139, "BlockContextMap"),
("read_only_space", 0x00fe9): (140, "CatchContextMap"),
("read_only_space", 0x01031): (147, "WithContextMap"),
("read_only_space", 0x01079): (141, "DebugEvaluateContextMap"),
("read_only_space", 0x010c1): (137, "ScriptContextTableMap"),
("read_only_space", 0x01109): (125, "ClosureFeedbackCellArrayMap"),
("read_only_space", 0x01151): (75, "FeedbackMetadataArrayMap"),
("read_only_space", 0x01199): (123, "ArrayListMap"),
("read_only_space", 0x011e1): (66, "BigIntMap"),
("read_only_space", 0x01229): (124, "ObjectBoilerplateDescriptionMap"),
("read_only_space", 0x01271): (72, "BytecodeArrayMap"),
("read_only_space", 0x012b9): (152, "CodeDataContainerMap"),
("read_only_space", 0x01301): (74, "FixedDoubleArrayMap"),
("read_only_space", 0x01349): (131, "GlobalDictionaryMap"),
("read_only_space", 0x01391): (154, "ManyClosuresCellMap"),
("read_only_space", 0x013d9): (123, "ModuleInfoMap"),
("read_only_space", 0x01421): (130, "NameDictionaryMap"),
("read_only_space", 0x01469): (154, "NoClosuresCellMap"),
("read_only_space", 0x014b1): (132, "NumberDictionaryMap"),
("read_only_space", 0x014f9): (154, "OneClosureCellMap"),
("read_only_space", 0x01541): (127, "OrderedHashMapMap"),
("read_only_space", 0x01589): (128, "OrderedHashSetMap"),
("read_only_space", 0x015d1): (129, "OrderedNameDictionaryMap"),
("read_only_space", 0x01619): (157, "PreparseDataMap"),
("read_only_space", 0x01661): (158, "PropertyArrayMap"),
("read_only_space", 0x016a9): (150, "SideEffectCallHandlerInfoMap"),
("read_only_space", 0x016f1): (150, "SideEffectFreeCallHandlerInfoMap"),
("read_only_space", 0x01739): (150, "NextCallSideEffectFreeCallHandlerInfoMap"),
("read_only_space", 0x01781): (133, "SimpleNumberDictionaryMap"),
("read_only_space", 0x017c9): (123, "SloppyArgumentsElementsMap"),
("read_only_space", 0x01811): (161, "SmallOrderedHashMapMap"),
("read_only_space", 0x01859): (162, "SmallOrderedHashSetMap"),
("read_only_space", 0x018a1): (163, "SmallOrderedNameDictionaryMap"),
("read_only_space", 0x018e9): (119, "SourceTextModuleMap"),
("read_only_space", 0x01931): (134, "StringTableMap"),
("read_only_space", 0x01979): (120, "SyntheticModuleMap"),
("read_only_space", 0x019c1): (165, "UncompiledDataWithoutPreparseDataMap"),
("read_only_space", 0x01a09): (166, "UncompiledDataWithPreparseDataMap"),
("read_only_space", 0x01a51): (167, "WeakArrayListMap"),
("read_only_space", 0x01a99): (135, "EphemeronHashTableMap"),
("read_only_space", 0x01ae1): (122, "EmbedderDataArrayMap"),
("read_only_space", 0x01b29): (168, "WeakCellMap"),
("read_only_space", 0x01b71): (58, "NativeSourceStringMap"),
("read_only_space", 0x01bb9): (32, "StringMap"),
("read_only_space", 0x01c01): (41, "ConsOneByteStringMap"),
("read_only_space", 0x01c49): (33, "ConsStringMap"),
("read_only_space", 0x01c91): (45, "ThinOneByteStringMap"),
("read_only_space", 0x01cd9): (37, "ThinStringMap"),
("read_only_space", 0x01d21): (35, "SlicedStringMap"),
("read_only_space", 0x01d69): (43, "SlicedOneByteStringMap"),
("read_only_space", 0x01db1): (34, "ExternalStringMap"),
("read_only_space", 0x01df9): (42, "ExternalOneByteStringMap"),
("read_only_space", 0x01e41): (50, "UncachedExternalStringMap"),
("read_only_space", 0x01e89): (0, "InternalizedStringMap"),
("read_only_space", 0x01ed1): (2, "ExternalInternalizedStringMap"),
("read_only_space", 0x01f19): (10, "ExternalOneByteInternalizedStringMap"),
("read_only_space", 0x01f61): (18, "UncachedExternalInternalizedStringMap"),
("read_only_space", 0x01fa9): (26, "UncachedExternalOneByteInternalizedStringMap"),
("read_only_space", 0x01ff1): (58, "UncachedExternalOneByteStringMap"),
("read_only_space", 0x02039): (67, "SelfReferenceMarkerMap"),
("read_only_space", 0x02099): (87, "EnumCacheMap"),
("read_only_space", 0x02131): (82, "ArrayBoilerplateDescriptionMap"),
("read_only_space", 0x02319): (90, "InterceptorInfoMap"),
("read_only_space", 0x04c51): (77, "AccessCheckInfoMap"),
("read_only_space", 0x04c99): (78, "AccessorInfoMap"),
("read_only_space", 0x04ce1): (79, "AccessorPairMap"),
("read_only_space", 0x04d29): (80, "AliasedArgumentsEntryMap"),
("read_only_space", 0x04d71): (81, "AllocationMementoMap"),
("read_only_space", 0x04db9): (83, "AsmWasmDataMap"),
("read_only_space", 0x04e01): (84, "AsyncGeneratorRequestMap"),
("read_only_space", 0x04e49): (85, "ClassPositionsMap"),
("read_only_space", 0x04e91): (86, "DebugInfoMap"),
("read_only_space", 0x04ed9): (88, "FunctionTemplateInfoMap"),
("read_only_space", 0x04f21): (89, "FunctionTemplateRareDataMap"),
("read_only_space", 0x04f69): (91, "InterpreterDataMap"),
("read_only_space", 0x04fb1): (92, "ObjectTemplateInfoMap"),
("read_only_space", 0x04ff9): (93, "PromiseCapabilityMap"),
("read_only_space", 0x05041): (94, "PromiseReactionMap"),
("read_only_space", 0x05089): (95, "PrototypeInfoMap"),
("read_only_space", 0x050d1): (96, "ScriptMap"),
("read_only_space", 0x05119): (97, "SourcePositionTableWithFrameCacheMap"),
("read_only_space", 0x05161): (98, "SourceTextModuleInfoEntryMap"),
("read_only_space", 0x051a9): (99, "StackFrameInfoMap"),
("read_only_space", 0x051f1): (100, "StackTraceFrameMap"),
("read_only_space", 0x05239): (101, "TemplateObjectDescriptionMap"),
("read_only_space", 0x05281): (102, "Tuple2Map"),
("read_only_space", 0x052c9): (103, "Tuple3Map"),
("read_only_space", 0x05311): (104, "WasmCapiFunctionDataMap"),
("read_only_space", 0x05359): (105, "WasmDebugInfoMap"),
("read_only_space", 0x053a1): (106, "WasmExceptionTagMap"),
("read_only_space", 0x053e9): (107, "WasmExportedFunctionDataMap"),
("read_only_space", 0x05431): (108, "WasmIndirectFunctionTableMap"),
("read_only_space", 0x05479): (109, "WasmJSFunctionDataMap"),
("read_only_space", 0x054c1): (110, "CallableTaskMap"),
("read_only_space", 0x05509): (111, "CallbackTaskMap"),
("read_only_space", 0x05551): (112, "PromiseFulfillReactionJobTaskMap"),
("read_only_space", 0x05599): (113, "PromiseRejectReactionJobTaskMap"),
("read_only_space", 0x055e1): (114, "PromiseResolveThenableJobTaskMap"),
("read_only_space", 0x05629): (115, "InternalClassMap"),
("read_only_space", 0x05671): (116, "SmiPairMap"),
("read_only_space", 0x056b9): (117, "SmiBoxMap"),
("read_only_space", 0x05701): (118, "SortStateMap"),
("read_only_space", 0x05749): (121, "AllocationSiteWithWeakNextMap"),
("read_only_space", 0x05791): (121, "AllocationSiteWithoutWeakNextMap"),
("read_only_space", 0x057d9): (156, "LoadHandler1Map"),
("read_only_space", 0x05821): (156, "LoadHandler2Map"),
("read_only_space", 0x05869): (156, "LoadHandler3Map"),
("read_only_space", 0x058b1): (164, "StoreHandler0Map"),
("read_only_space", 0x058f9): (164, "StoreHandler1Map"),
("read_only_space", 0x05941): (164, "StoreHandler2Map"),
("read_only_space", 0x05989): (164, "StoreHandler3Map"),
("map_space", 0x00121): (1057, "ExternalMap"),
("map_space", 0x00171): (1073, "JSMessageObjectMap"),
("map_space", 0x00169): (1073, "JSMessageObjectMap"),
}
# List of known V8 objects.
KNOWN_OBJECTS = {
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("read_only_space", 0x00241): "EmptyDescriptorArray",
("read_only_space", 0x002a9): "EmptyWeakFixedArray",
("read_only_space", 0x003a9): "UninitializedValue",
("read_only_space", 0x004b9): "UndefinedValue",
("read_only_space", 0x00539): "NanValue",
("read_only_space", 0x00599): "TheHoleValue",
("read_only_space", 0x00631): "HoleNanValue",
("read_only_space", 0x00641): "TrueValue",
("read_only_space", 0x006f1): "FalseValue",
("read_only_space", 0x00739): "empty_string",
("read_only_space", 0x00bf9): "EmptyScopeInfo",
("read_only_space", 0x00c09): "EmptyFixedArray",
("read_only_space", 0x00c19): "ArgumentsMarker",
("read_only_space", 0x00cb9): "Exception",
("read_only_space", 0x00d59): "TerminationException",
("read_only_space", 0x00e01): "OptimizedOut",
("read_only_space", 0x00ea1): "StaleRegister",
("read_only_space", 0x02391): "EmptyEnumCache",
("read_only_space", 0x023f9): "EmptyPropertyArray",
("read_only_space", 0x02409): "EmptyByteArray",
("read_only_space", 0x02419): "EmptyObjectBoilerplateDescription",
("read_only_space", 0x02431): "EmptyArrayBoilerplateDescription",
("read_only_space", 0x02499): "EmptyClosureFeedbackCellArray",
("read_only_space", 0x024a9): "EmptySloppyArgumentsElements",
("read_only_space", 0x024c9): "EmptySlowElementDictionary",
("read_only_space", 0x02511): "EmptyOrderedHashMap",
("read_only_space", 0x02539): "EmptyOrderedHashSet",
("read_only_space", 0x02561): "EmptyFeedbackMetadata",
("read_only_space", 0x02571): "EmptyPropertyCell",
("read_only_space", 0x02599): "EmptyPropertyDictionary",
("read_only_space", 0x025e9): "NoOpInterceptorInfo",
("read_only_space", 0x02689): "EmptyWeakArrayList",
("read_only_space", 0x026a1): "InfinityValue",
("read_only_space", 0x026b1): "MinusZeroValue",
("read_only_space", 0x026c1): "MinusInfinityValue",
("read_only_space", 0x026d1): "SelfReferenceMarker",
("read_only_space", 0x02729): "OffHeapTrampolineRelocationInfo",
("read_only_space", 0x02741): "TrampolineTrivialCodeDataContainer",
("read_only_space", 0x02759): "TrampolinePromiseRejectionCodeDataContainer",
("read_only_space", 0x02771): "GlobalThisBindingScopeInfo",
("read_only_space", 0x027d9): "EmptyFunctionScopeInfo",
("read_only_space", 0x02829): "HashSeed",
("read_only_space", 0x001b1): "NullValue",
("read_only_space", 0x00229): "EmptyDescriptorArray",
("read_only_space", 0x00289): "EmptyWeakFixedArray",
("read_only_space", 0x00371): "UninitializedValue",
("read_only_space", 0x00471): "UndefinedValue",
("read_only_space", 0x004e9): "NanValue",
("read_only_space", 0x00541): "TheHoleValue",
("read_only_space", 0x005d1): "HoleNanValue",
("read_only_space", 0x005e1): "TrueValue",
("read_only_space", 0x00689): "FalseValue",
("read_only_space", 0x006d1): "empty_string",
("read_only_space", 0x00b19): "EmptyScopeInfo",
("read_only_space", 0x00b29): "EmptyFixedArray",
("read_only_space", 0x00b39): "ArgumentsMarker",
("read_only_space", 0x00bd1): "Exception",
("read_only_space", 0x00c69): "TerminationException",
("read_only_space", 0x00d09): "OptimizedOut",
("read_only_space", 0x00da1): "StaleRegister",
("read_only_space", 0x02081): "EmptyEnumCache",
("read_only_space", 0x020e1): "EmptyPropertyArray",
("read_only_space", 0x020f1): "EmptyByteArray",
("read_only_space", 0x02101): "EmptyObjectBoilerplateDescription",
("read_only_space", 0x02119): "EmptyArrayBoilerplateDescription",
("read_only_space", 0x02179): "EmptyClosureFeedbackCellArray",
("read_only_space", 0x02189): "EmptySloppyArgumentsElements",
("read_only_space", 0x021a9): "EmptySlowElementDictionary",
("read_only_space", 0x021f1): "EmptyOrderedHashMap",
("read_only_space", 0x02219): "EmptyOrderedHashSet",
("read_only_space", 0x02241): "EmptyFeedbackMetadata",
("read_only_space", 0x02251): "EmptyPropertyCell",
("read_only_space", 0x02279): "EmptyPropertyDictionary",
("read_only_space", 0x022c9): "NoOpInterceptorInfo",
("read_only_space", 0x02361): "EmptyWeakArrayList",
("read_only_space", 0x02379): "InfinityValue",
("read_only_space", 0x02389): "MinusZeroValue",
("read_only_space", 0x02399): "MinusInfinityValue",
("read_only_space", 0x023a9): "SelfReferenceMarker",
("read_only_space", 0x02401): "OffHeapTrampolineRelocationInfo",
("read_only_space", 0x02419): "TrampolineTrivialCodeDataContainer",
("read_only_space", 0x02431): "TrampolinePromiseRejectionCodeDataContainer",
("read_only_space", 0x02449): "GlobalThisBindingScopeInfo",
("read_only_space", 0x024b1): "EmptyFunctionScopeInfo",
("read_only_space", 0x02501): "HashSeed",
("old_space", 0x00121): "ArgumentsIteratorAccessor",
("old_space", 0x00191): "ArrayLengthAccessor",
("old_space", 0x00201): "BoundFunctionLengthAccessor",