Previously we've added has_scheduled_exception DCHECKs that were a bit
too strict in some cases.

- Remove unused exception_out param for TryRunMicrotasks
- Simplify overzealous DCHECK and clean up MicrotaskQueue::RunMicrotasks

Change-Id: I3a945a731573b6b3e44e17487fb8bf871b9a6793
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3789504
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82131}

This reverts commit eb3fb6cb.

Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Mac64%20GC%20Stress/23845/overview

Original change's description:
> [wasm] WasmCompileLazyFrame scanning
>
> Feedback vector allocation can trigger a GC, and thereby make the
> WasmCompileLazyFrame visible for the GC. This CL add stack scanning
> for the WasmCompileLazyFrame.
>
> Design doc: http://doc/1peovM6N6C4nSEdC77l4uxU1L0njA0RTaOjy5F12r2CQ
>
> Change-Id: Iec16f50ad2c8ad7e6dcf05f9e620163d3b60ea0a
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3789516
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Andreas Haas <ahaas@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#82119}

Change-Id: I694cd288d3a299bd397d4417e6864f7075a7c181
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3804256
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Owners-Override: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82130}

Bug: v8:12852
Change-Id: I4f38a41afe07633060038151acee986f318103b5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3795376Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82129}

Bug: v8:7700
Change-Id: If911ff32d42c7c907da88d52192bb839bf459d5b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3803028
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82128}

This reverts commit 61193620.

Reason for revert: Blocking roll: https://chromium-review.googlesource.com/c/chromium/src/+/3802992/

Original change's description:
> [heap, api] Check assumptions for embedder fields on set
>
> Previously, we would set embedder fields and do type checks (on
> embedder fields) in the GC. This does not work nicely as embedder
> fields contain system pointers whereas we can only operate with
> tag-aligned reads/writes. The end result of assembling pointers was
> somtimes broken for concurrent marking.
>
> In this CL we reverse the mode and check assumptions when writing the
> fields. From Blink we generally only write once and use the fields in
> the GC and via reads multiple times.
>
> We assume, that when running with CppHeap, any pointer on an instance
> field that points into CppHeap, also has the type field set with the
> appropriate tracing information. In debug builds we also verify that
> the embedder field indeed points to the start of an Oilpan object.
>
> Bug: chromium:1337690
> Change-Id: I9f9a8e691cdcf666861a455dcf8f65f2fe80b034
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3788206
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Reviewed-by: Omer Katz <omerkatz@chromium.org>
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#82120}

Bug: chromium:1337690
Change-Id: Iaece8f51883c7d001fb18ef48faaf271c48b8f11
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3804245
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Owners-Override: Leszek Swirski <leszeks@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#82127}

Port commit eb3fb6cb

Change-Id: Ic2c87341458b7867fea2d5b8cea56315ac727477
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3803996
Auto-Submit: Liu Yu <liuyu@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/main@{#82126}

Preparation step to remove the subtype relationship between funcref and anyref.

Bug: v8:7748
Change-Id: Ie4b29bfc4b874aaca668082018f5359d1b6e3a2e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3803226Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82125}

This is a strictly code moving change. We move the diffing algorithm
out of liveedit.cc into its own file.

We want to replace the current diffing algorithm and to stay safe we
will ship old and new algorithm side-by-side for a release for easy
revertability. Given that liveedit.cc is already large enough we
extract the diffing algo into a separate file.

R=kimanh@chromium.org

Bug: chromium:1205288
Change-Id: If5ebb6c2dff2f00387c9e2ab87e4bb61d1f1484a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3802687Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82124}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/4bfce1a..b1d3dce

Rolling v8/buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/6940fd4..56cc5bc

Rolling v8/third_party/zlib: https://chromium.googlesource.com/chromium/src/third_party/zlib/+log/c4e1268..8d1d3e3

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com

Change-Id: I2800a7fab761b9bdfa08faf777d62311dfaa1f93
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3804026
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#82123}

We record Sparkplug compiled into SFI which will be saved in disk cache, once deserializes SFI from disk cache, and the SFI was Sparkplug compiled, we trigger concurrent batch Sparkplug compilation, and directly allocate feedback vector on the first call.
This CL can improve Speedometer2 by +2%.

Change-Id: I89b0ffc6d7a107a1b8c131529e02cd7eb2890888
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3725612Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Tao Pan <tao.pan@intel.com>
Cr-Commit-Position: refs/heads/main@{#82122}

This change adds new functions to BackgroundCompileTask which closely
match those in BackgroundDeserializeTask. These functions allow a caller
to manage background merging of newly compiled content into an existing
Script from the Isolate compilation cache. These functions are not yet
exposed via the API; instead, StressBackgroundCompileThread uses them to
increase test coverage of the merging logic.

Bug: v8:12808
Change-Id: I4d2f429164223785169fe447ce2bdd8beaee00d4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3793959
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82121}

Previously, we would set embedder fields and do type checks (on
embedder fields) in the GC. This does not work nicely as embedder
fields contain system pointers whereas we can only operate with
tag-aligned reads/writes. The end result of assembling pointers was
somtimes broken for concurrent marking.

In this CL we reverse the mode and check assumptions when writing the
fields. From Blink we generally only write once and use the fields in
the GC and via reads multiple times.

We assume, that when running with CppHeap, any pointer on an instance
field that points into CppHeap, also has the type field set with the
appropriate tracing information. In debug builds we also verify that
the embedder field indeed points to the start of an Oilpan object.

Bug: chromium:1337690
Change-Id: I9f9a8e691cdcf666861a455dcf8f65f2fe80b034
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3788206
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82120}

Feedback vector allocation can trigger a GC, and thereby make the
WasmCompileLazyFrame visible for the GC. This CL add stack scanning
for the WasmCompileLazyFrame.

Design doc: http://doc/1peovM6N6C4nSEdC77l4uxU1L0njA0RTaOjy5F12r2CQ

Change-Id: Iec16f50ad2c8ad7e6dcf05f9e620163d3b60ea0a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3789516Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82119}

R=jkummerow@chromium.org

Bug: v8:12926
Change-Id: I5942af918142a72158149e9820f49d4f07bb5266
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3790860Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82118}

As requested in https://chromium-review.googlesource.com/c/v8/v8/+/3794708

No intended behavior change.

Bug: none
Change-Id: I5816ecf6073dc3c0d558d52518e38e4dbee7d562
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3796233Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Auto-Submit: Nico Weber <thakis@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82117}

This CL fixes issues in YoungGenerationConcurrentMarkingVisitor
(YGCMV) that were discovered during an offline integration test which
uses YGCMV during MinorMC's final pause.

This also adds PopOnHold() to EmptyMarkingWorklist, in order to
process on-hold objects during final pause once concurrent marking is
working.

Bug: v8:13012

Change-Id: Ia4fef101bd974de9f5b031974cdae787dcbd3819
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3803030
Commit-Queue: Leon Bettscheider <bettscheider@google.com>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82116}

The type stored in {Result} should not always be the same as derived by
the compiler for the argument to {Decoder::toResult}. If we pass in a
temporary, we most often want it to be stored by value, not by
reference.
This CL enforces this; if requirements change in the future, we can
remove the static assertions and think about how to protect against
accidental UAF when referencing a temporary value.

R=jkummerow@chromium.org
CC=mliedtke@chromium.org

Change-Id: Ia0449e6ed7342319799479b200af35660fccc6d7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3792115Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82115}

Bug: v8:7700
Change-Id: I72b85094b22c2fb5a94c42d5920f750aee2fd167
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3803025
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82114}

Refactor out the parallel move algorithm into a helper class, and add
stack slot support for cases where stack slots can clobber each other
(e.g. a Phi which is an input to another Phi). Also add some
documentation for how these parallel moves work.

Bug: v8:7700
Change-Id: Ib9bb1cce8287e2ad34b4417b77b148a1ad483268
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3803032Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82113}

Change-Id: I57c805b899a25e58035f2ed9accd10e43114fd80
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3802689Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82112}

Preparation step to remove the subtype relationship between funcref and anyref.

Bug: v8:7748
Change-Id: Ic2d3467addff16dc0df466234cb7ce6e573ba666
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3797829
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82111}

...for very large feedback vector indices.

Fixed: v8:13118
Change-Id: I38f1507ffe29e63ae58fd6436dffec7d0d610f95
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3791247Reviewed-by: Andreas Haas <ahaas@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82110}

clang now complains when a BitField for an enum is too wide.
We could suppress this, but it seems kind of useful from an
uninformed distance, so I made a few bitfields smaller instead.

(For AddressingMode, since its size is target-dependent, I added
an explicit underlying type to the enum instead, which suppresses
the diag on a per-enum basis.)

This is without any understanding of the code I'm touching.
Especially the change in v8-internal.h feels a bit risky to me.

Bug: chromium:1348574
Change-Id: I73395de593045036b72dadf4e3147b5f7e13c958
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3794708
Commit-Queue: Nico Weber <thakis@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Auto-Submit: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82109}

struct.new_default may not be called for immutable structs.
Follow-up to d2c75d32.

Change-Id: I7b682938ca5da00ef6c9bec29856133301beb6b4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3802688
Auto-Submit: Matthias Liedtke <mliedtke@chromium.org>
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82108}

Introduce RootVisitor and related class hierarchy to just handle
roots. This avoids the awkard definitions for roots visiation in all
the cases they are not needed.

Change-Id: Ib0912e4bf543db2ecf68caead6929c68d6afdda6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3782794Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82107}

- ThrowReferenceErrorIfHole
- ThrowSuperNotCalledIfHole
- ThrowSuperAlreadyCalledIfNotHole
- ThrowIfNotSuperConstructor

Bug: v8:7700
Change-Id: I565a196869905cddaf1203deae7469dcadbfcdf6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3802685Reviewed-by: Jakob Linke <jgruber@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82106}

Bump the memory size limit of memory64 memories from 4GB to 16GB. Tests
are added for larger sizes (5GB, 16GB).

Drive-by: Improve two decoder errors to properly include the unit,
  tested by the new tests.

R=jkummerow@chromium.org

Bug: v8:10949
Change-Id: I99dfc216b9213838784214c0b65ba863831d5884
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3789507Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82105}

- No slots are invalidated as all slots are always treated as tagged
  or aligned pointers.
- The map is not updated.

Change-Id: Ifb8ffddfa3b626de3233f17f67b46fec36146f2e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3795378Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82104}

Port commit 044a18ac

Bug: v8:10949
Change-Id: I1dfe8fdc4439f621d2ae9f38e63310a1e6f0b7f4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3798964
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Auto-Submit: Liu Yu <liuyu@loongson.cn>
Cr-Commit-Position: refs/heads/main@{#82103}

Make sure to always start at the innermost loop, and to have Jump phis
participate in the lifetime extension.

Bug: v8:7700
Change-Id: Iefb9108519d027782ba9f0ce8c0696fba0a0aa52
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3793390Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82102}

Bug: v8:7700
Change-Id: I3ea3027feb51f10ef0587328835d5a3a1002ed54
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3803029Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82101}

.. instead of their non-negated form.

Fixed: v8:13097
Change-Id: I6426f5bbce2dfec2bbc64346d04f3b833d17c2b9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3802690
Commit-Queue: Jakob Linke <jgruber@chromium.org>
Reviewed-by: Patrick Thier <pthier@chromium.org>
Auto-Submit: Jakob Linke <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82100}

Instead, create only 1 normalized map.

This will benefit ES5-style classes.

Bug: v8:13091
Change-Id: I495ea4a69aedef01b97f4b0d5aad19bb355ce004
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3776692
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82099}

It's difficult to say which structs might in the future have deprecated
fields, so this CL adds tests for two more for now.
Once we add deprecated fields, we then need to define copy/move
constructs and assignment operators via
{ALLOW_COPY_AND_MOVE_WITH_DEPRECATED_FIELDS} (same as for other structs
which are not tested yet).

R=mlippautz@chromium.org

Bug: v8:13092
Change-Id: I89a330661a02d86d3d48e216b69cb6f77f02cff2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3789508Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82098}

Bug: v8:12783
Change-Id: I5b7acf2445b0f898158448dde206a0cecdab6a80
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3764345Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Darius Mercadier <dmercadier@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82097}

When an object either gets promoted or evacuated, old-to-shared slots
need to be recorded like we already do for old-to-old or old-to-new.

Bug: v8:11708
Change-Id: Ifb5b3d50a59aa45bf8289e1cd7610bb2f317fd6c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3794648Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82096}

Create a HasProperty node to mirror TF.

Bug: v8:7700
Change-Id: Ie332d54031eef640c247e7c7c5d06c033636fc7c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3803027Reviewed-by: Jakob Linke <jgruber@chromium.org>
Commit-Queue: Jakob Linke <jgruber@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82095}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/0572ff1..4bfce1a

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com

Change-Id: Iaf282b305b9cda21b347cfaaa1338c0195e2806f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3796863
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
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Cr-Commit-Position: refs/heads/main@{#82094}

The function returns true if the function does not do anything like:
() => {}.

Change-Id: I049d7956c443b5d2bb8017a48547376f13acd0a2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3778969Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Yoshisato Yanagisawa <yyanagisawa@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82093}

Change-Id: I6e4dc69d6f22d3108ae74552b72bcafc0be3db64
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3793476
Commit-Queue: Yahan Lu <yahan@iscas.ac.cn>
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82092}