Every testsuite configuration consist of at least 30% code duplication.
The code age ranges from 10 years old to 5 years old. Implementing anything that
touches the testsuite code becomes a technical fight to the death.
This CL removes all the duplication by refactoring the common functionality.
This CL contains structural changes without any logical changes % small bug
fixes.
R=machenbach@chromium.orgCC=yangguo@chromium.org,sergiyb@chromium.org
Bug: v8:8174, v8:8769
Change-Id: Iee299569caa7abdc0307ecf606136669034a28a2
Reviewed-on: https://chromium-review.googlesource.com/c/1445881
Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59361}
For these two fields, an offset of 0 was used to mark non-existent
tables. After this CL, it always contains a real offset even if the
table is empty. This matches behavior of other embedded metadata
(constant pool and code comments). Remnants of the old behavior still
remain in WasmCode and HandlerTable.
Drive-by: Update comments describing Code object layout.
Drive-by: Unify naming of Code offset constants.
Bug: v8:8758
Change-Id: Ia8a1f66988b6c294a026b96f4f272fc5583a8c30
Reviewed-on: https://chromium-review.googlesource.com/c/1451880
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59360}
This CL introduces Torque classes with fields around TypedArrays so
CSA LoadObjectField accessors that are only used in Torque code
can be removed.
R=tebbi@chromium.org
Bug: v8:8562
Change-Id: Ie46dad5c25bd6ac03aacef8509e22f435896d127
Reviewed-on: https://chromium-review.googlesource.com/c/1451823
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59359}
This adds Code::has_foo() and Code::foo_size() helpers for inlined
metadata sections (currently: the safepoint table, handler table,
constant pool, and code comments). Prior to this, each call site had
to know implementation details of the instruction area layout.
Bug: v8:8758
Change-Id: I9dc391992a4bf709ee403beab8606d85540dc1be
Reviewed-on: https://chromium-review.googlesource.com/c/1451838
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59357}
Port String.prototype.startsWith from a CPP builtin to a Torque builtin.
Spec: https://tc39.github.io/ecma262/#sec-string.prototype.startswith
Bug: v8:8400
Change-Id: I51aff0b3a4126c17ab4f89763019fd7e4ba665d9
Reviewed-on: https://chromium-review.googlesource.com/c/1361340
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59355}
Test262 has a couple of duplicated test files with the identical inside both
"test262/data/test" and "test262/local-tests/test".
Testrunner used to deduplicate the tests, which masked this issue.
This CL removes the obsolete copies in the local-tests.
R=adamk@chromium.org,yangguo@chromium.org,machenbach@chromium.org
Bug: v8:8174,v8:8728
Change-Id: Iecdc40b417f237feb916f1c3a24f8def7ea11fad
Reviewed-on: https://chromium-review.googlesource.com/c/1452436
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59354}
Remove the call to [[HasProperty]] for the shared property when threads
feature is enabled.
Bug: v8:8782
Change-Id: I492ed3726ea846a1a52dc3a0e0a183d9ee506e96
Reviewed-on: https://chromium-review.googlesource.com/c/1451826
Reviewed-by: Ben Smith <binji@chromium.org>
Commit-Queue: Sven Sauleau <ssauleau@igalia.com>
Cr-Commit-Position: refs/heads/master@{#59352}
This reverts commit 91344c5f65.
The original commit seems to cause some issues.
TBR=machenbach@chromium.org
Change-Id: I2ee3f635ad8c2edd78c4c645c075c4153fb8a8ee
Reviewed-on: https://chromium-review.googlesource.com/c/1452440
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59350}
See referenced bug. This is currently broken and blocks the roll. The
CL cannot easily be reverted, so I disable code logging for now while
working on a fix.
R=herhut@chromium.org, sigurds@chromium.org
Bug: v8:8783
Change-Id: I222981313535cadd1ddc345bdf56dfabfc328c82
Reviewed-on: https://chromium-review.googlesource.com/c/1452437
Reviewed-by: Stephan Herhut <herhut@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59349}
This is 3-4x faster than using the Utf8Decoder. This matters for proper
parse-time measurements using d8.
Change-Id: I9870e9fbe400ec022a6eeb20491c80a2a32f8519
Reviewed-on: https://chromium-review.googlesource.com/c/1451827
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59347}
This CL adds handling for Load/StoreMessage to LoadElimination. It is
handled like a Load/StoreField to an external location.
Change-Id: I50f27fba9cb7ffabf1474aa409083676cef65442
Bug: v8:8183, chromium:927746
Reviewed-on: https://chromium-review.googlesource.com/c/1451879
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59344}
The flag value and {Platform::NumberOfWorkerThreads()} are already int,
and we do not expect to spawn more than 2 billion threads any time soon.
R=titzer@chromium.org
Bug: v8:8562
Change-Id: I9c23ae1b5b9e9daab3fdb072bf98f48ea2b3f240
Reviewed-on: https://chromium-review.googlesource.com/c/1451887
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59343}
This reverts commit 8a91484619.
Reason for revert: Seems to cause layout test failures: https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8-Blink%2520Mac/16246
Original change's description:
> [wasm] Turn deferred handles into global handles
>
> Each instance of {DeferredHandles} only stores a single handle anyway,
> so turning them into global handles saves memory.
>
> R=ahaas@chromium.org
>
> Bug: v8:7921, v8:8423
> Change-Id: I75e0cc6ecb6d0337f1695e6bfd4b5fdcb8a2039c
> Reviewed-on: https://chromium-review.googlesource.com/c/1402715
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59331}
TBR=ahaas@chromium.org,clemensh@chromium.org
Change-Id: I8996fd22702b5dd0485e59b54989788596293a1f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7921, v8:8423
Reviewed-on: https://chromium-review.googlesource.com/c/1451888
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59342}
This removes the last creation of foreground tasks in the compilation
state. I think this logic can be removed completely, because
a) the number of background tasks is already capped at {max(1,
FLAG_wasm_num_compilation_tasks)}, and
b) in order to get predictable timing you can use the --predictable
flag which makes all background tasks execute synchronously with
foreground tasks (from the same queue).
R=ahaas@chromium.orgCC=mstarzinger@chromium.org
Bug: v8:8050, v8:8689
Change-Id: I142af6b42f9bb9befc7c7b7d6002192d72bd7677
Reviewed-on: https://chromium-review.googlesource.com/c/1451841
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59341}
...except for the initial function.
Bug: v8:7790, chromium:928202
Change-Id: I220e13d148525734d866f8aaf0c7ef8cbeccbcb2
Reviewed-on: https://chromium-review.googlesource.com/c/1451825
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59340}
The counters are the last use of the Isolate. Remove it by passing in
the counters in a shared_ptr. This way, we can also refactor the
counters later to be per engine or per process.
In a follow-up CL, we can then remove the Isolate, the foreground task
runner and the cancellable task manager from the compilation state.
R=mstarzinger@chromium.org
Bug: v8:8689, v8:8050
Change-Id: I66b4fab77f770cb8a5463244054b428eef1b7c61
Reviewed-on: https://chromium-review.googlesource.com/c/1451922
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59339}
The parts that deal with allocating on heap buffers and typed array elements
(FixedTypedArrayBase) remain in CSA, as it is assumed to eventually be expressed
with Torque classes.
This reduces overall builtins size by 508 bytes (Mac x64.release)
- TypedArrayInitialize 2332 -> 1824
Bug: v8:7161
Change-Id: I5d0648b4dd79a687f77d6f4b01b236f4a0508c54
Reviewed-on: https://chromium-review.googlesource.com/c/1445215
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Commit-Queue: Peter Wong <peter.wm.wong@gmail.com>
Cr-Commit-Position: refs/heads/master@{#59337}
The compilation state is isolate-independent, so it should not cache
the isolate-specific {should_log_code} flag.
Instead, we log via the WasmEngine every time. If this turns out to be
too expensive, we should introduce an atomic flag in the WasmEngine.
R=mstarzinger@chromium.org
Bug: v8:8050
Change-Id: I913ada4f86af4c6fa9cd9c5adc8d4e250f6eb7f1
Reviewed-on: https://chromium-review.googlesource.com/c/1451820
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59335}
This commit updates gen-postmortem-metadata.py to re-export
the v8dbg_class_JSFunction__shared__SharedFunctionInfo
constant.
See: https://github.com/nodejs/node/pull/25852
Change-Id: I60f39c96f3f22d6f10ec38b0af3c975908c7b7f2
Reviewed-on: https://chromium-review.googlesource.com/c/1450144
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59334}
Each instance of {DeferredHandles} only stores a single handle anyway,
so turning them into global handles saves memory.
R=ahaas@chromium.org
Bug: v8:7921, v8:8423
Change-Id: I75e0cc6ecb6d0337f1695e6bfd4b5fdcb8a2039c
Reviewed-on: https://chromium-review.googlesource.com/c/1402715
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59331}
This is a reland of 83908b865b
Fix: check V8_INTL_SUPPORT macro in js-objects.cc
Original change's description:
> Reland "Extract JSObject class from objects.cc"
>
> This is a reland of b8c821f4e2
>
> Fix: include src/string-stream.h for compile failure
> https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20builder/39320
>
> Original change's description:
> > Extract JSObject class from objects.cc
> >
> > I extracted following class member functions to js-objects.cc
> > * JSReceiver
> > * JSObject
> > * JSBoundFunction
> > * JSFunction
> > * JSGlobalObject
> > * JSDate
> > * JSMessageObject
> >
> > Declaration of all above class are in js-objects.h.
> >
> > I also moved AllocationSite::DigestTransitionFeedback used in JSObject::UpdateAllocationSite
> > and ShouldConvertToSlowElements used in JSObject and JSArray
> >
> > This patch makes compile time of objects.cc from 17.6s to 14.1s on Z840 Linux.
> > And js-objects.cc takes 8.69s for compile.
> >
> > Bug: v8:7629
> > Change-Id: I989f22363667445dd28d7f8c06c81ff79d6ed45f
> > Reviewed-on: https://chromium-review.googlesource.com/c/1447916
> > Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
> > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> > Reviewed-by: Marja Hölttä <marja@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#59288}
>
> Bug: v8:7629
> Bug: v8:8562
> Change-Id: Iac2227c5f0c5a4072d16814ecae481fb4720e4f5
> Reviewed-on: https://chromium-review.googlesource.com/c/1449951
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59318}
Bug: v8:7629, v8:8562
Change-Id: If8870bd579d8597d08981a83492f60595e081a65
Reviewed-on: https://chromium-review.googlesource.com/c/1452097
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59329}
This is a reland of a9e93572d4
Original change's description:
> [test] Check for illegal uses of mjsunit methods
>
> The assertThrows and assertDoesNotThrow methods expect either a
> function to execute, or a string to eval. In several tests however we
> accidentally passed the *result* of the statement to be tested instead
> of the code.
> This CL adds check to catch such error early, and removes wrong uses.
> In most places, we do not need to use assertDoesNotThrow anyway,
> because exceptions are handled as test failures.
>
> Drive-by: Unify catch syntax in mjsunit.js and make sure to propagate
> MjsUnitAssertionErrors correctly.
>
> R=mathias@chromium.org
>
> Bug: v8:8562
> Change-Id: I88894a667cbe0570774f748a9a23e8a527887a49
> Reviewed-on: https://chromium-review.googlesource.com/c/1439238
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59277}
Bug: v8:8562
Change-Id: I3b26935f7b35302d499266155273ea271bf8151d
Reviewed-on: https://chromium-review.googlesource.com/c/1449792
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59328}
This is a reland of 0befa6d4c3
Original change's description:
> [nojit] Check that --jitless is disabled when creating wasm code
>
> Drive-by: Amend wasm test skips for lite mode.
>
> Bug: v8:7777
> Change-Id: I23e13b65e548c19d6b24a26e0b962a9978f54ed7
> Reviewed-on: https://chromium-review.googlesource.com/c/1449616
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59314}
Tbr: mstarzinger@chromium.org
Bug: v8:7777
Change-Id: I0a076b36bb2e69b612df89b0f35067f299f27a7e
Reviewed-on: https://chromium-review.googlesource.com/c/1451819
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59325}
The most common use of {SaveContext} is to allocate this object, then
immediately set the context of the isolate to another Context. Thus
introduce a second class called "SaveAndSwitchContext" which implements
exactly that.
R=mstarzinger@chromium.org
Bug: v8:8562
Change-Id: I2fca1eadd909a7afe035316ded934624273f2e21
Reviewed-on: https://chromium-review.googlesource.com/c/1448319
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59323}
As Marja suggested, this CL changes tools/locs.py in such a way that
it also counts the bytes in the input file and the output file.
Example output now looks similar to this:
Processed 1,526 files in 24.58 sec.
gen ( 31 files): 94,507 LoC ( 4,972 kB) to 2,839,311 LoC (183,777 kB) ( 30x)
src ( 630 files): 371,499 LoC ( 14,743 kB) to 53,707,841 LoC ( 3,155 MB) ( 145x)
test ( 381 files): 492,861 LoC ( 25,372 kB) to 36,885,988 LoC ( 2,194 MB) ( 75x)
third_party ( 433 files): 239,155 LoC ( 8,683 kB) to 9,713,872 LoC (412,829 kB) ( 41x)
total ( 1526 files): 1,212,675 LoC ( 54,242 kB) to 104,133,982 LoC ( 5,973 MB) ( 86x)
Change-Id: I1ff5e752ee3a96d388a4393c2592aec68f834000
Notry: true
Reviewed-on: https://chromium-review.googlesource.com/c/1450113
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59322}
In the process add missing base Torque functionality for 8-bit and
16-bit integers and Cast<> operators to make them easy to use.
As a poster child, port the field declarations of SharedFunctionInfo
to the class definition in base.tq.
As a drive by: Add the missing GN dependency on
class-definitions-from-dsl.h
Bug: v8:7793
Change-Id: I76a41c2e81ffd1cbb90ac7a4ef8d4003ac86e8dc
Reviewed-on: https://chromium-review.googlesource.com/c/1445882
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Daniel Clifford <danno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59321}
This CL changes most Call* macros (and some others) in Array#sort to
pass the context and sortState implicitly. This improves
readability, especially for loads and stores.
R=jgruber@chromium.org, tebbi@chromium.org
Bug: v8:8567
Change-Id: I6528d080bb01ab676de3ba6a7bf8223b98b6db7f
Reviewed-on: https://chromium-review.googlesource.com/c/1450114
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59320}
For compiled SFIs, finding the FunctionLiteralId is a slow operation that requires
doing a binary search in the script's SFI table. Given the SFI has been flushed,
it is unlikely we will need the FunctionLiteralId again, so just mark the
UncompiledData has having an invalid FunctionLiteralID such that we only do
the search if it is required from the UncompiledData.
This addresses a significant regression on gc_latency when bytecode flushing was
enabled.
BUG=chromium:927038,v8:8395
Change-Id: I7123c3fe05034ff96e84f9d1d36d5f312a2a56e0
Reviewed-on: https://chromium-review.googlesource.com/c/1450118
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59319}
This is a reland of b8c821f4e2
Fix: include src/string-stream.h for compile failure
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20builder/39320
Original change's description:
> Extract JSObject class from objects.cc
>
> I extracted following class member functions to js-objects.cc
> * JSReceiver
> * JSObject
> * JSBoundFunction
> * JSFunction
> * JSGlobalObject
> * JSDate
> * JSMessageObject
>
> Declaration of all above class are in js-objects.h.
>
> I also moved AllocationSite::DigestTransitionFeedback used in JSObject::UpdateAllocationSite
> and ShouldConvertToSlowElements used in JSObject and JSArray
>
> This patch makes compile time of objects.cc from 17.6s to 14.1s on Z840 Linux.
> And js-objects.cc takes 8.69s for compile.
>
> Bug: v8:7629
> Change-Id: I989f22363667445dd28d7f8c06c81ff79d6ed45f
> Reviewed-on: https://chromium-review.googlesource.com/c/1447916
> Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59288}
Bug: v8:7629
Bug: v8:8562
Change-Id: Iac2227c5f0c5a4072d16814ecae481fb4720e4f5
Reviewed-on: https://chromium-review.googlesource.com/c/1449951
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59318}
This CL makes the TypedArray#sort unit test more robust, that checks
for the stable property.
R=jgruber@chromium.org
Bug: v8:8567
Change-Id: I8e6a729d0a8b54901535d49eb578b8b34bd6f2eb
Reviewed-on: https://chromium-review.googlesource.com/c/1449695
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59316}
These offsets are now transported via CodeDesc.
Bug: v8:8758
Change-Id: If7485c62878bc81a55c9b4ca8ce3578dab2376ce
Reviewed-on: https://chromium-review.googlesource.com/c/1447717
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59315}
Drive-by: Amend wasm test skips for lite mode.
Bug: v8:7777
Change-Id: I23e13b65e548c19d6b24a26e0b962a9978f54ed7
Reviewed-on: https://chromium-review.googlesource.com/c/1449616
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59314}
This replaces the "trusted" with the "jitless" correctness-fuzzing experiment.
The former is a no-op already.
NOTRY=true
Bug: v8:8778
Change-Id: Ie9b490df27071980b2049148844b8f716bbbb1f7
Reviewed-on: https://chromium-review.googlesource.com/c/1450120
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Sergiy Belozorov <sergiyb@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59313}
