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Michael Achenbach ab572da29e Revert "[wasm] Always enable guard regions on 64-bit platforms" 
This reverts commit ad221d144a.

Reason for revert: Layout test failures:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/22780

Original change's description:
> [wasm] Always enable guard regions on 64-bit platforms
> 
> This change makes full 8 GiB guard regions always enabled on 64-bit
> platforms.
> 
> Additionally, since all Wasm memory allocation paths have some form of
> guard regions, this removes and simplifies most of the logic around
> whether to enable guard regions.
> 
> This is a reland of https://crrev.com/c/985142.
> 
> Bug: v8:7619
> Change-Id: I8bf1f86d6f89fd0bb2144431c7628f15a6b00ba0
> Reviewed-on: https://chromium-review.googlesource.com/996466
> Reviewed-by: Brad Nelson <bradnelson@chromium.org>
> Commit-Queue: Eric Holk <eholk@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52412}

TBR=bradnelson@chromium.org,eholk@chromium.org

Change-Id: Ic15d14c6fa69300bc0fdc036b9fee8ecf65fd397
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7619
Reviewed-on: https://chromium-review.googlesource.com/999412
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52418}
2018-04-06 06:30:03 +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 Reland "[build] Remove legacy isolate configurations" 2018-03-28 12:36:55 +00:00
include [debug] expose SideEffectType for whitelisting embedder callbacks 2018-04-04 20:08:00 +00:00
infra Revert "Enable cfi-icall on the v8 CFI bots" 2018-04-04 10:11:20 +00:00
samples [sample] fix potential memory leak. 2018-02-21 13:06:18 +00:00
src Revert "[wasm] Always enable guard regions on 64-bit platforms" 2018-04-06 06:30:03 +00:00
test Revert "[wasm] Always enable guard regions on 64-bit platforms" 2018-04-06 06:30:03 +00:00
testing Remove dummy files created for rolling googletest. 2018-03-27 05:55:56 +00:00
third_party Roll googletest to 1.8.0+. 2018-03-23 07:54:27 +00:00
tools [esnext] Implement String.prototype.matchAll 2018-04-05 15:24:25 +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
.gitignore [test] Remove obsolete test262 archive extract 2018-03-28 13:52:15 +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 Remove duplicated file listed in BUILD.gn 2018-04-05 18:31:54 +00:00
BUILD.gn [cleanup] Refactor the Factory 2018-04-06 00:23:46 +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 [wasm] Update spec tests 2018-03-29 16:47:32 +00:00
LICENSE Updates to the license information of third party components. 2015-06-16 12:37:50 +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 [gyp] remove gyp files. 2018-02-08 20:04:06 +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.