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Michael Achenbach 1c40429844 Revert "[array] Use random middle element to determine pivot during sorting" 
This reverts commit 91bab5588c.

Reason for revert: Seems to break a layout test:
https://ci.chromium.org/buildbot/client.v8.fyi/V8-Blink%20Linux%2064/23895

See also:
https://github.com/v8/v8/wiki/Blink-layout-tests

Original change's description:
> [array] Use random middle element to determine pivot during sorting
> 
> This CL adds a "random state" to the Smi Root list and implements a
> basic Linear congruential pseudo random number generator in Torque.
> 
> The RNG is used to determine the pivot element for sorting. This will
> prevent the worst cases for certain data layouts.
> 
> Drive-by-fix: Make sorting of ranges and execution pauses for profviz
> deterministic by adding a secondary sorting criteria.
> 
> Bug: v8:7382
> Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
> Change-Id: Ieb871e98e74bdb803f821b0cd35d2f67ee0f2868
> Reviewed-on: https://chromium-review.googlesource.com/1082193
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Commit-Queue: Simon Zünd <szuend@google.com>
> Cr-Commit-Position: refs/heads/master@{#53524}

TBR=hpayer@chromium.org,cbruni@chromium.org,jgruber@chromium.org,szuend@google.com

Change-Id: I54f5d3f719428fd089ff12ff217d1c819f9ad1f7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7382
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/1088506
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53542}
2018-06-06 08:16:48 +00:00
benchmarks Fix common misspellings 2017-08-02 09:35:28 +00:00
build_overrides [ndk] Change android ndk root for v8 2018-01-11 08:10:33 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni Revert "Roll third_party/inspector_protocol to 59ca26e" 2018-04-23 17:38:31 +00:00
include [ptr-compr] Support 31-bit Smis in lower half-word on 64-bit architectures. 2018-06-05 11:37:35 +00:00
infra Revert "[infra] Add gc_stats variant to Linux64 debug bot" 2018-05-29 06:13:07 +00:00
samples [sample] fix potential memory leak. 2018-02-21 13:06:18 +00:00
src Revert "[array] Use random middle element to determine pivot during sorting" 2018-06-06 08:16:48 +00:00
test Revert "[array] Use random middle element to determine pivot during sorting" 2018-06-06 08:16:48 +00:00
testing Remove dummy files created for rolling googletest. 2018-03-27 05:55:56 +00:00
third_party [code-health] Improve a comment 2018-05-24 10:11:30 +00:00
tools Revert "[array] Use random middle element to determine pivot during sorting" 2018-06-06 08:16:48 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +00:00
.editorconfig Add .editorconfig 2017-07-28 13:39:24 +00:00
.git-blame-ignore-revs [build] Add DEPS formatting to hyper-blame 2017-10-09 14:08:45 +00:00
.gitattributes [git] Add gitattributes to convert CRLF to LF automatically 2018-05-07 18:44:49 +00:00
.gitignore [turbolizer] Convert Turbolizer to TypeScript 2018-05-29 10:07:41 +00:00
.gn [test] Remove obsolete test262 archive extract 2018-03-28 13:52:15 +00:00
.vpython [tools] Add pypiwin32 pacakge to VPython config 2018-03-09 20:33:36 +00:00
.ycm_extra_conf.py [ycm] Switch from gnu++11 to gnu++14 2017-11-27 07:48:21 +00:00
AUTHORS [builtins] Convert double to integer in Date.prototype.setDate 2018-06-05 09:27:39 +00:00
BUILD.gn [ptr-compr] Support 31-bit Smis in lower half-word on 64-bit architectures. 2018-06-05 11:37:35 +00:00
ChangeLog [tools] Merge ChangeLog from latest release 2017-12-19 12:30:56 +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 Make Gerrit the default code review for V8 2017-06-30 17:37:37 +00:00
DEPS Update V8 DEPS. 2018-05-31 03:31:25 +00:00
LICENSE Add antlr4 runtime library to support Torque 2018-04-10 10:01:01 +00:00
LICENSE.fdlibm Add LICENSE.fdlibm for all the fdlibm imported sources. 2016-06-09 07:17:03 +00:00
LICENSE.strongtalk Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.v8 Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.valgrind Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
OWNERS Adding a few more wasm related OWNERS. 2018-03-01 20:19:07 +00:00
PRESUBMIT.py [V8] Add back owners check 2018-04-27 07:43:39 +00:00
README.md [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
snapshot_toolchain.gni MIPS[64]: Generate snapshots on MIPS big-endian targets 2017-11-24 19:00:32 +00:00
WATCHLISTS Remove v8-x87-ports@ from WATCHLIST 2018-02-26 19:56:21 +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://github.com/v8/v8/wiki

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 on the V8 wiki.