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1d3c4975be
v8/test/cctest
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Seth Brenith 1d3c4975be [tools] Use instance types of known Maps in v8_debug_helper 
If we can read an object's Map pointer but not any data from the Map
itself, we may still be able to accurately describe the object's type if
the Map pointer matches one of the known Maps from the snapshot.
GetObjectProperties uses that data in one of two ways:
- If it is sure that the Map pointer matches a known Map, then it uses
  the type from that Map and continues as if it read the type normally.
- If the Map pointer is at the right offset within a heap page to match
  a known Map, but the caller didn't provide the addresses of the first
  pages in Map space or read-only space, then the type of that Map is
  just a guess and gets returned in a separate array. This gives the
  caller the opportunity to present guessed types to the user, and
  perhaps call again using the guessed type as the type hint.

Bug: v8:9376
Change-Id: I187f67b77e76699863a14534a9d635b79f654124
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1787986
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63908}
2019-09-20 16:00:59 +00:00
..
compiler [ubsan] Make ARM and ARM64 UBSan-clean 2019-09-16 15:03:45 +00:00
heap [heap] GC should not retain filler objects tracked by deferred handles 2019-09-18 22:17:18 +00:00
interpreter Extend GetIterator bytecode to perform JSReceiver check on object[Symbol.iterator]() 2019-09-12 08:51:35 +00:00
libplatform Replace base::make_unique by std::make_unique 2019-09-10 11:21:51 +00:00
libsampler [cpu-profiler] Only record SIGPROF-based samples for samplers that request samples 2019-02-13 09:29:38 +00:00
parsing [Parsing] Fix a bug in UpdateBufferPointers where it incorrectly updated the buffer range. 2019-08-13 14:20:17 +00:00
torque Avoid defining class name Label as type alias in cctest because it is used by V8 2019-09-09 07:06:40 +00:00
wasm [wasm-simd] Implement QFMA and QFMS on x64 2019-09-18 20:25:07 +00:00
assembler-helper-arm.cc [cleanup] Drop some dead (Macro)Assembler code 2019-05-27 08:53:28 +00:00
assembler-helper-arm.h Move handles-related files to src/handles 2019-05-23 06:00:15 +00:00
BUILD.gn Reland x6 [arraybuffer] Rearchitect backing store ownership 2019-09-09 13:07:42 +00:00
cctest.cc Replace base::make_unique by std::make_unique 2019-09-10 11:21:51 +00:00
cctest.h [cleanup] Replace function typedefs by using declarations 2019-05-28 08:35:08 +00:00
cctest.status [Test] Add TurboProp test variant. 2019-09-09 16:49:24 +00:00
collector.h Move remaining files in src/ 2019-05-24 18:24:36 +00:00
DEPS Reland "[tracing] Roll perfetto @ 28b633cd" 2019-09-06 13:42:02 +00:00
disasm-regex-helper.cc [turbofan] Improve load poisoning tests. 2019-07-02 17:55:04 +00:00
disasm-regex-helper.h [turbofan] Improve load poisoning tests. 2019-07-02 17:55:04 +00:00
expression-type-collector-macros.h [cleanup] Fix remaining (D)CHECK macro usages 2017-10-18 10:12:31 +00:00
gay-fixed.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
gay-fixed.h Move utility code to src/utils 2019-05-23 14:13:34 +00:00
gay-precision.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
gay-precision.h Move utility code to src/utils 2019-05-23 14:13:34 +00:00
gay-shortest.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
gay-shortest.h Move utility code to src/utils 2019-05-23 14:13:34 +00:00
manually-externalized-buffer.h Reland x6 [arraybuffer] Rearchitect backing store ownership 2019-09-09 13:07:42 +00:00
OWNERS [owners] Remove redundant OWNERS files in test/ 2019-06-24 12:44:32 +00:00
print-extension.cc Use nullptr instead of NULL where possible 2017-10-13 17:21:49 +00:00
print-extension.h [cleanup] Mark test/ methods in subclasses with override. 2018-09-17 07:40:00 +00:00
profiler-extension.cc Reland "[Compile] Ensure we don't access the native context during bytecode finalization." 2018-10-26 22:33:56 +00:00
profiler-extension.h [cleanup] Mark test/ methods in subclasses with override. 2018-09-17 07:40:00 +00:00
scope-test-helper.h [parser] Various Scope and Context speedups 2019-01-28 13:06:03 +00:00
setup-isolate-for-tests.cc [interpreter] Always put bytecode handlers in builtins table 2018-09-20 09:58:15 +00:00
setup-isolate-for-tests.h Move initialization code into src/init 2019-05-16 12:36:15 +00:00
test-access-checks.cc Replace CHECK(false) by UNREACHABLE() 2017-12-19 18:58:07 +00:00
test-accessor-assembler.cc [csa] move TNode to separate header 2019-09-12 14:48:03 +00:00
test-accessors.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-allocation.cc [utils] Fix Malloced implementation 2019-07-15 09:59:22 +00:00
test-api-accessors.cc Move more relevant files to src/objects 2019-05-23 08:52:30 +00:00
test-api-array-buffer.cc [api] Add [Shared]ArrayBuffer::GetBackingStore() 2019-09-19 10:03:02 +00:00
test-api-interceptors.cc Move utility code to src/utils 2019-05-23 14:13:34 +00:00
test-api-stack-traces.cc [debug] Report line numbers for Function constructor functions correctly 2019-08-08 13:49:17 +00:00
test-api-typed-array.cc [typed-arrays] Introduce JSTypedArray::kMaxSizeInHeap constant 2019-06-18 17:19:19 +00:00
test-api.cc Reland "[top-level-await] Implement top-level-await in V8" 2019-09-16 15:29:17 +00:00
test-api.h [test-api] Extract arraybufs and typed arrays 2019-06-17 15:27:01 +00:00
test-array-list.cc Move more relevant files to src/objects 2019-05-23 08:52:30 +00:00
test-assembler-arm64.cc Renaming variables which conflict with macro definition in Windows SDK 2019-09-04 20:37:48 +00:00
test-assembler-arm.cc [cleanup] Eliminate non-const reference parameters 2019-09-10 09:31:07 +00:00
test-assembler-ia32.cc [cleanup] Replace function typedefs by using declarations 2019-05-28 08:35:08 +00:00
test-assembler-mips64.cc [mips][heap] Remove dynamic allocation flag on NewNumber functions 2019-09-17 14:07:59 +00:00
test-assembler-mips.cc [mips][heap] Remove dynamic allocation flag on NewNumber functions 2019-09-17 14:07:59 +00:00
test-assembler-ppc.cc Move architecture dependent files 2019-05-28 14:02:15 +00:00
test-assembler-s390.cc [s390]tm family test: change a label name 2019-07-22 20:05:10 +00:00
test-assembler-x64.cc [cleanup] Replace function typedefs by using declarations 2019-05-28 08:35:08 +00:00
test-atomicops.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-backing-store.cc Reland x6 [arraybuffer] Rearchitect backing store ownership 2019-09-09 13:07:42 +00:00
test-bignum-dtoa.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-bignum.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-bit-vector.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-circular-queue.cc Reland "[d8] Remove maximum workers limitation" 2019-07-30 07:56:17 +00:00
test-code-layout.cc Move more relevant files to src/objects 2019-05-23 08:52:30 +00:00
test-code-stub-assembler.cc [CSA][cleanup] TNodify builtins promise gen (pt. 2) 2019-09-19 10:01:57 +00:00
test-compiler.cc [debug] Don't disable the RegExp compilation cache when debugger is active. 2019-09-18 19:14:36 +00:00
test-constantpool.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-conversions.cc Reland "[utils] Make BitField final" 2019-07-29 14:20:58 +00:00
test-cpu-profiler.cc Reland "[tracing] Roll perfetto @ 28b633cd" 2019-09-06 13:42:02 +00:00
test-date.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-debug-helper.cc [tools] Use instance types of known Maps in v8_debug_helper 2019-09-20 16:00:59 +00:00
test-debug.cc Remove always-on flag --experimental_inline_promise_constructor 2019-09-11 13:17:22 +00:00
test-decls.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-deoptimization.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-dictionary.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-disasm-arm64.cc [arm64] Add support for pointer authentication instructions 2019-07-24 17:00:26 +00:00
test-disasm-arm.cc Add disasm for vshl (register) on arm 2019-09-18 19:21:06 +00:00
test-disasm-ia32.cc [wasm-simd] Implement f32x4.sqrt for ia32 2019-09-16 20:26:01 +00:00
test-disasm-mips64.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-disasm-mips.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-disasm-ppc.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-disasm-s390.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-disasm-x64.cc Revert "[wasm-simd] Implement F64x2ConvertI64x2 for x64" 2019-09-09 18:04:14 +00:00
test-diy-fp.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-double.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-dtoa.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-elements-kind.cc Add new nonextensible element kinds 2019-08-28 17:24:49 +00:00
test-extra.js [js] Remove CORE JS Natives (prologue.js), port extra utils to C++/Torque 2019-01-07 11:57:46 +00:00
test-factory.cc Move handles-related files to src/handles 2019-05-23 06:00:15 +00:00
test-fast-dtoa.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-feedback-vector.cc Reland "[ic] Don't transition to premonomorphic state" 2019-08-05 15:51:47 +00:00
test-feedback-vector.h Move more relevant files to src/objects 2019-05-23 08:52:30 +00:00
test-field-type-tracking.cc [cleanup] Eliminate non-const reference parameters 2019-09-10 09:31:07 +00:00
test-fixed-dtoa.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-flags.cc [regexp] Multiple interpreter executions tier-up 2019-09-09 15:43:42 +00:00
test-func-name-inference.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-fuzz-arm64.cc Move architecture dependent files 2019-05-28 14:02:15 +00:00
test-global-handles.cc [cleanup] Replace function typedefs by using declarations 2019-05-28 08:35:08 +00:00
test-global-object.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-hashcode.cc [ptr-compr] Pass Isolate to JSObject::NormalizeProperties() 2019-06-11 11:11:10 +00:00
test-hashmap.cc [cleanup] Replace function typedefs by using declarations 2019-05-28 08:35:08 +00:00
test-heap-profiler.cc [cleanup] Eliminate non-const reference parameters 2019-09-10 09:31:07 +00:00
test-icache.cc Move handles-related files to src/handles 2019-05-23 06:00:15 +00:00
test-identity-map.cc Move utility code to src/utils 2019-05-23 14:13:34 +00:00
test-inobject-slack-tracking.cc [object] Remove MutableHeapNumber 2019-08-20 19:04:04 +00:00
test-inspector.cc [inspector] fix typo in fromUTF16LE and cleanup test 2019-06-26 11:50:31 +00:00
test-intl.cc Better GetAvilableLocales check resources 2019-06-21 23:04:09 +00:00
test-javascript-arm64.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-js-arm64-variables.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-js-weak-refs.cc [WeakRefs] Make cleanup callback run as a task 2019-07-30 12:19:39 +00:00
test-liveedit.cc Add quotes around unexpected token SyntaxError 2019-06-11 06:11:58 +00:00
test-lockers.cc Replace base::make_unique by std::make_unique 2019-09-10 11:21:51 +00:00
test-log-stack-tracer.cc [cleanup] Remove unused TickSample class from the public API 2019-08-22 07:27:35 +00:00
test-log.cc [cleanup][heap] Improve heap iterator naming 2019-06-17 14:38:02 +00:00
test-macro-assembler-arm64.cc [ptr-compr][arm64] Use ldr_w to load on 32 bits for CompressedHeapConstants 2019-06-21 07:37:04 +00:00
test-macro-assembler-arm.cc [cleanup] Remove 'typedef struct' and 'typedef enum' 2019-05-28 12:17:35 +00:00
test-macro-assembler-mips64.cc [mips64][codegen] Remove dead argument to Assember::stop 2019-07-12 12:06:27 +00:00
test-macro-assembler-mips.cc [cleanup] Replace function typedefs by using declarations 2019-05-28 08:35:08 +00:00
test-macro-assembler-x64.cc Move architecture dependent files 2019-05-28 14:02:15 +00:00
test-managed.cc Move more relevant files to src/objects 2019-05-23 08:52:30 +00:00
test-mementos.cc Move more relevant files to src/objects 2019-05-23 08:52:30 +00:00
test-modules.cc [api] Support CreationContext() on module namespace objects 2019-09-17 14:55:29 +00:00
test-object.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-orderedhashtable.cc [runtime] Throw range error on too many properties 2019-08-28 15:58:04 +00:00
test-parsing.cc [class] parse static private methods and accessors 2019-09-11 12:59:52 +00:00
test-platform.cc s390: Edited Generate_CEntry to correctly return buffer when built with clang 2018-09-05 07:01:16 +00:00
test-pointer-auth-arm64.cc [arm64] Add support for pointer authentication instructions 2019-07-24 17:00:26 +00:00
test-poison-disasm-arm64.cc Reland "[turbofan,arm64] Add float loads poisoning." 2019-09-16 14:57:08 +00:00
test-poison-disasm-arm.cc Reland "[turbofan,arm64] Add float loads poisoning." 2019-09-16 14:57:08 +00:00
test-profile-generator.cc [cleanup] Eliminate non-const reference parameters 2019-09-10 09:31:07 +00:00
test-random-number-generator.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-regexp.cc [regexp] Consolidate calls to jitted irregexp and regexp interpreter 2019-08-29 15:19:58 +00:00
test-representation.cc Move relevant files to src/objects 2019-05-20 08:57:47 +00:00
test-roots.cc Remove noscript_shared_function_infos 2019-09-11 15:18:24 +00:00
test-sampler-api.cc [cleanup] Replace simple typedefs by using 2019-05-27 12:39:49 +00:00
test-serialize.cc [debug] Don't disable the RegExp compilation cache when debugger is active. 2019-09-18 19:14:36 +00:00
test-smi-lexicographic-compare.cc [cleanup] Eliminate non-const reference parameters 2019-09-10 09:31:07 +00:00
test-stack-unwinding-win64.cc Unwind V8 frames correctly on Windows ARM64 2019-07-31 06:24:45 +00:00
test-strings.cc [ptr-compr][cleanup] Replace READ_[WEAK_]FIELD with TaggedField<>::load() 2019-06-28 10:47:40 +00:00
test-strtod.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-symbols.cc Move utility code to src/utils 2019-05-23 14:13:34 +00:00
test-sync-primitives-arm64.cc Reland "[d8] Remove maximum workers limitation" 2019-07-30 07:56:17 +00:00
test-sync-primitives-arm.cc Reland "[d8] Remove maximum workers limitation" 2019-07-30 07:56:17 +00:00
test-thread-termination.cc Reland "[d8] Remove maximum workers limitation" 2019-07-30 07:56:17 +00:00
test-threads.cc Replace base::make_unique by std::make_unique 2019-09-10 11:21:51 +00:00
test-trace-event.cc Replace base::make_unique by std::make_unique 2019-09-10 11:21:51 +00:00
test-traced-value.cc [tracing] Improve tracing signals for compilation/optimization. 2019-03-25 14:49:08 +00:00
test-transitions.cc [ptr-compr] Isolatify Map::MigrateToMap() and friends 2019-07-03 08:08:05 +00:00
test-transitions.h Move relevant files to src/objects 2019-05-20 08:57:47 +00:00
test-typedarrays.cc [api] Add [Shared]ArrayBuffer::GetBackingStore() 2019-09-19 10:03:02 +00:00
test-types.cc [turbofan] Disentangle header include chains 2019-07-05 14:26:05 +00:00
test-unboxed-doubles.cc [object] Remove MutableHeapNumber 2019-08-20 19:04:04 +00:00
test-unscopables-hidden-prototype.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-unwinder.cc [cleanup] Avoid {Object::operator->} 2019-05-23 07:52:07 +00:00
test-usecounters.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-utils-arm64.cc Move architecture dependent files 2019-05-28 14:02:15 +00:00
test-utils-arm64.h Move architecture dependent files 2019-05-28 14:02:15 +00:00
test-utils.cc [cleanup] Replace simple typedefs by using 2019-05-27 12:39:49 +00:00
test-version.cc Move remaining files in src/ 2019-05-24 18:24:36 +00:00
test-weakmaps.cc Move more relevant files to src/objects 2019-05-23 08:52:30 +00:00
test-weaksets.cc Move more relevant files to src/objects 2019-05-23 08:52:30 +00:00
testcfg.py Reland "Preparing v8 to use with python3 /test" 2019-03-20 09:56:06 +00:00
trace-extension.cc [cleanup] Remove unused TickSample class from the public API 2019-08-22 07:27:35 +00:00
trace-extension.h [cleanup] Remove unused TickSample class from the public API 2019-08-22 07:27:35 +00:00
unicode-helpers.cc Move string-related files to src/strings 2019-05-21 07:17:48 +00:00
unicode-helpers.h Move string-related files to src/strings 2019-05-21 07:17:48 +00:00