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Nico Hartmann 746d62d4b9 Revert "[compiler] Support acq/rel accesses and atomic accesses on tagged" 
This reverts commit faf2208a0b.

Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20-%20arm64%20-%20sim%20-%20pointer%20compression/10870/overview

Original change's description:
> [compiler] Support acq/rel accesses and atomic accesses on tagged
>
> This CL adds an AtomicMemoryOrder parameter to the various atomic load
> and store operators. Currently only acquire release (kAcqRel) and
> sequentially consistent (kSeqCst) orders are supported.
>
> Additionally, atomic loads and stores are extended to work with tagged
> values.
>
> This CL is a pre-requisite for supporting atomic accesses in Torque,
> which is in turn a pre-requisite for prototyping shared strings.
>
> Bug: v8:11995
> Change-Id: Ic77d2640e2dc7e5581b1211a054c93210c219355
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3101765
> Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
> Reviewed-by: Zhi An Ng <zhin@chromium.org>
> Commit-Queue: Shu-yu Guo <syg@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#76393}

Bug: v8:11995
Change-Id: Id9936672f9e96c509b1cdf866de1ac5303996945
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3107229
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#76394}
2021-08-19 15:49:18 +00:00
.github [github] Close PRs created on the V8 GitHub mirror automatically 2021-01-12 08:39:59 +00:00
bazel [bazel] Initial support to mjsunit tests 2021-08-09 14:12:02 +00:00
build_overrides [build] Remove obsolete gn flag 2021-01-11 15:50:59 +00:00
custom_deps Use relative paths to OWNERS files 2019-08-12 13:52:52 +00:00
docs Add OWNERS for docs/ 2019-05-15 12:06:15 +00:00
gni [LOONG64] Add LoongArch64 backend 2021-08-16 13:05:19 +00:00
include [api] Make JSStackComparableAddress private 2021-08-18 09:42:39 +00:00
infra [infra] Change loong-v comment to Loongson 2021-08-19 09:11:19 +00:00
samples Reland "[api] Add v8::Isolate::ThrowError helper" 2021-04-16 11:48:05 +00:00
src Revert "[compiler] Support acq/rel accesses and atomic accesses on tagged" 2021-08-19 15:49:18 +00:00
test Revert "[compiler] Support acq/rel accesses and atomic accesses on tagged" 2021-08-19 15:49:18 +00:00
testing [macros] Upstream Google3 changes 2021-06-24 16:36:14 +00:00
third_party Roll inspector-protocol to 32cf5f2bf4dc20c73ead291e68d2e2f6b638cd57 2021-07-09 13:01:24 +00:00
tools Revert "cppgc: Enable checks for assignments in prefinalizers" 2021-08-19 08:57:24 +00:00
.bazelrc [bazel] Support build mode compilation 2021-07-13 10:14:16 +00:00
.clang-format
.clang-tidy
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.flake8 Add .flake8 to allow for python style checking. 2019-07-19 21:44:03 +00:00
.git-blame-ignore-revs [infra] Update .git-blame-ignore-revs 2020-03-03 12:59:13 +00:00
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.gitignore [log] Include tickprocessor log files in git 2021-06-21 15:26:29 +00:00
.gn Revert "[build] Separate out inspector as a shared library" 2021-07-02 16:15:20 +00:00
.mailmap Restore consistency between .mailmap and AUTHORS 2021-06-24 08:58:04 +00:00
.vpython [tools] Implement confidence-based number of runs 2019-05-09 09:42:28 +00:00
.ycm_extra_conf.py [ycm] Fix python script 2021-07-29 09:48:32 +00:00
AUTHORS [date] Fix Date#getMinutes() test failures 2021-08-18 14:54:40 +00:00
BUILD.bazel [bazel] Adds src/heap/progress-bar.h 2021-08-19 11:30:48 +00:00
BUILD.gn Revert "[compiler] Support acq/rel accesses and atomic accesses on tagged" 2021-08-19 15:49:18 +00:00
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DEPS Update google_benchmark 2021-08-19 10:04:15 +00:00
DIR_METADATA Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
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PPC_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
PRESUBMIT.py [bigint] Move multiplication to src/bigint/ 2021-04-19 15:40:43 +00:00
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WATCHLISTS Reland "[watchlist] Add cbruni@ to api watchlist" 2021-08-10 13:51:49 +00:00
WORKSPACE [bazel] Adds ICU 2021-06-30 12:54:15 +00:00

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.