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Nico Hartmann 362e265d4c Revert "[Torque] Generalize Torque literals to larger size" 
This reverts commit 757830b02b.

Reason for revert: Speculatively revert due to a number of
performance regressions

Original change's description:
> [Torque] Generalize Torque literals to larger size
>
> Previously, literals in Torque were stored as double values, which
> made it impossible to precisely represent 64 bit integer values.
> This CL replaces the old literal expression with an integer and
> floating point literal expression that are unbounded in size. We
> allow implicit conversion of these literals to arbitary integer
> and floating point types respectively and insert a corresponding
> bounds check into generated CSA.
>
> Bug: v8:7793
> Change-Id: I46c231aab92bc2f0c26955d1876079f306b358c6
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3329792
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#78671}

Bug: v8:7793
Change-Id: I9896e28b3c69b8cf2488bf93e993ec320d8c5d2e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3401866
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78706}
2022-01-20 17:13:39 +00:00
.github [github] Close PRs created on the V8 GitHub mirror automatically 2021-01-12 08:39:59 +00:00
bazel [bazel] Cleanup style with Buildifier. 2022-01-11 10:00:36 +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 Consolidate arguments that change together on branch cut 2022-01-20 11:20:09 +00:00
include Revert "Version 9.10.0" 2022-01-20 15:55:49 +00:00
infra Increase shards for test262 on V8 Linux64 ASAN 2022-01-19 15:07:49 +00:00
samples [api] V8::Initialize cleanup 2021-11-30 14:30:38 +00:00
src Revert "[Torque] Generalize Torque literals to larger size" 2022-01-20 17:13:39 +00:00
test Revert "[Torque] Generalize Torque literals to larger size" 2022-01-20 17:13:39 +00:00
testing [test][cleanup] Fix -Wshadow warnings in unittests 2021-09-27 08:59:01 +00:00
third_party [inspector] Gracefully ignore non-dictionary values as session state. 2022-01-05 11:12:04 +00:00
tools Revert "[Torque] Generalize Torque literals to larger size" 2022-01-20 17:13:39 +00:00
.bazelrc [bazel] Use v8_enable_handle_zapping only in debug builds. 2022-01-11 11:32:39 +00:00
.clang-format
.clang-tidy [tool] Remove unfixed clang-tidy warnings to ease use. 2018-10-26 07:40:32 +00:00
.editorconfig
.flake8 remove swarming_client 2021-08-24 10:39:33 +00:00
.git-blame-ignore-revs [infra] Update .git-blame-ignore-revs 2020-03-03 12:59:13 +00:00
.gitattributes .gitattributes: Mark minified emscripten js files as -diff 2018-09-19 16:27:10 +00:00
.gitignore remove swarming_client 2021-08-24 10:39:33 +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 Verify mac-arm64 wheels for v8/.vpython spec. 2021-09-15 21:11:50 +00:00
.vpython3 Add vpython3 to DEPS 2021-11-05 18:08:29 +00:00
.ycm_extra_conf.py [ycm] Fix python script 2021-07-29 09:48:32 +00:00
AUTHORS [snapshot] The length of the snapshot version string is 64 bytes 2022-01-10 14:46:58 +00:00
BUILD.bazel Revert "[Torque] Generalize Torque literals to larger size" 2022-01-20 17:13:39 +00:00
BUILD.gn Revert "[Torque] Generalize Torque literals to larger size" 2022-01-20 17:13:39 +00:00
CODE_OF_CONDUCT.md Explicitly state that the Chromium Code of Conduct also applies to V8 2016-03-02 09:51:24 +00:00
codereview.settings
COMMON_OWNERS [owners] Add nikolaos@ to common owners 2022-01-12 09:37:27 +00:00
DEPS Update V8 DEPS. 2022-01-20 03:53:13 +00:00
DIR_METADATA Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
ENG_REVIEW_OWNERS Add verwaest@ to ENG_REVIEW_OWNERS. 2021-09-16 15:00:57 +00:00
INFRA_OWNERS Add team members as owners 2020-08-18 08:29:04 +00:00
INTL_OWNERS add ftang as owner 2020-04-24 19:19:36 +00:00
LICENSE [wasm] Draft version of C/C++ Wasm API 2019-04-17 16:00:26 +00:00
LICENSE.fdlibm
LICENSE.strongtalk
LICENSE.v8
LOONG_OWNERS [LOONG64] Add LoongArch64 backend 2021-08-16 13:05:19 +00:00
MIPS_OWNERS [mips] Add LiuYu to MIPS_OWNERS 2021-09-08 01:38:52 +00:00
OWNERS Let infra owners own all dot files 2021-11-05 18:57:18 +00:00
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
README.md [docs] Change links from old wiki to v8.dev 2019-03-07 12:13:30 +00:00
RISCV_OWNERS Add Lu Yahan to RISC-V owners list 2021-09-13 16:35:00 +00:00
S390_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
WATCHLISTS Add myself to heap/ watchlist 2021-11-08 16:58:14 +00:00
WORKSPACE [bazel] Cleanup style with Buildifier. 2022-01-11 10:00:36 +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.