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Matthias Liedtke e54d30b7ef Revert "Reland "unified-young-gen: Implement generational barrier for TracedHandles"" 
This reverts commit e31a7192ee.

Reason for revert: TSAN failure for the newly added unittest: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20TSAN%20-%20stress-incremental-marking/10056/overview

Original change's description:
> Reland "unified-young-gen: Implement generational barrier for TracedHandles"
>
> The dcheck was fixed in 7b40cb0c1b. The MSVC was also fixed.
>
> Original change's description:
> > unified-young-gen: Implement generational barrier for TracedHandles
> >
> > If unified young generation is enabled, we don't record all young nodes,
> > but only ones that have old host. The same std::vector<TracedHandle*> is
> > reused for the remembered set implementation.
> >
> > The barrier is added to TracedHandle creation, i.e.
> >  - v8::TracedReference::Reset(),
> >  - v8::TracedReference::operator=(const TracedReference&),
> > and to moving between TracedHandles, i.e.
> >  - v8::TracedReference::operator=(TracedReference&&).
> >
> > Bug: v8:13475
> > Change-Id: I2dc236e21c05f797687344c5745896f0bb8b0a0a
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4057070
> > Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> > Commit-Queue: Anton Bikineev <bikineev@chromium.org>
> > Cr-Commit-Position: refs/heads/main@{#84513}
>
> Bug: v8:13475
> Change-Id: I8ecde011af077a818b7b96af57e15b607febb185
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4061693
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Anton Bikineev <bikineev@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#84533}

Bug: v8:13475
Change-Id: I05a179a5ef79890640bba450c4f3e3178c38228f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4061464
Commit-Queue: Matthias Liedtke <mliedtke@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Matthias Liedtke <mliedtke@chromium.org>
Cr-Commit-Position: refs/heads/main@{#84536}
2022-11-29 14:44:23 +00:00
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bazel [bazel] Add hide symbols from release build 2022-11-22 10:00:46 +00:00
build_overrides
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gni v8: Explicitly set v8_snapshot_toolchain to host_toolchain when host_cpu == target_cpu 2022-11-08 19:29:22 +00:00
include [turboshaft] Implement SignedMulOverflow64 2022-11-25 15:44:06 +00:00
infra [gcmole] Introduce gcmole arch-variants in configs 2022-11-25 09:17:21 +00:00
samples
src Revert "Reland "unified-young-gen: Implement generational barrier for TracedHandles"" 2022-11-29 14:44:23 +00:00
test Revert "Reland "unified-young-gen: Implement generational barrier for TracedHandles"" 2022-11-29 14:44:23 +00:00
testing
third_party add tebbi@ to more OWNERs 2022-11-08 09:14:50 +00:00
tools [v8windbg] Fix crash when reading external strings 2022-11-28 16:13:09 +00:00
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.vpython3 Reland "[resultdb] Add ResultDB indicator" 2022-10-14 11:05:59 +00:00
.ycm_extra_conf.py [ycm] Fix YouCompleteMe config 2022-11-02 15:59:48 +00:00
AUTHORS Resolved an issue where an earlier error was not reported first in certain cases 2022-11-11 13:43:32 +00:00
BUILD.bazel [build] Remove dead ENABLE_DEBUGGER_SUPPORT define 2022-11-25 09:54:03 +00:00
BUILD.gn [maglev] Arm64 boilerplate 2022-11-25 16:13:36 +00:00
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PRESUBMIT.py [gcmole] Simplify gcmole directives and add tests 2022-11-14 13:07:15 +00:00
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README.md

V8 JavaScript Engine

V8 is Google's open source JavaScript engine.

V8 implements ECMAScript as specified in ECMA-262.

V8 is written in C++ and is used in Google Chrome, the open source browser from Google.

V8 can run standalone, or can be embedded into any C++ application.

V8 Project page: https://v8.dev/docs

Getting the Code

Checkout depot tools, and run

    fetch v8

This will checkout V8 into the directory v8 and fetch all of its dependencies. To stay up to date, run

    git pull origin
    gclient sync

For fetching all branches, add the following into your remote configuration in .git/config:

    fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
    fetch = +refs/tags/*:refs/tags/*

Contributing

Please follow the instructions mentioned at v8.dev/docs/contribute.