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Michael Achenbach 0e229b9dbe Revert "Reland "[build] disable C++ optimization for mksnapshot code."" 
This reverts commit a6b95a6acf.

Reason for revert:
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Clusterfuzz%20Win64%20ASAN%20-%20release%20builder/6984

Original change's description:
> Reland "[build] disable C++ optimization for mksnapshot code."
> 
> This is a reland of cee2f772c7
> 
> Original change's description:
> > [build] disable C++ optimization for mksnapshot code.
> > 
> > By disabling C++ optimizations for code that's only run in mksnapshot,
> > that is, CSA and Torque-generated code, we can save compile time.
> > I observed up to 2x improvements of compile time for some files,
> > while the mksnapshot time did not increase significantly.
> > 
> > Bug: v8:7629
> > Change-Id: I96be2966611b2471b68023e0dd9e351d94f0013c
> > Reviewed-on: https://chromium-review.googlesource.com/c/1460941
> > Reviewed-by: Yang Guo <yangguo@chromium.org>
> > Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
> > Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#59585}
> 
> Bug: v8:7629
> Change-Id: I8330f93173ab3d7b400e15ea4935bbe8256b250f
> Reviewed-on: https://chromium-review.googlesource.com/c/1473292
> Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
> Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
> Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59606}

TBR=yangguo@chromium.org,sigurds@chromium.org,tebbi@chromium.org

Change-Id: Ifdad207913a1814580c3055e57c6bfc2c6a53ae6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7629
Reviewed-on: https://chromium-review.googlesource.com/c/1473294
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59608}
2019-02-14 17:18:19 +00:00
benchmarks [test] Ensure random generator in JSTests does not use float arithmetic 2018-12-17 10:05:08 +00:00
build_overrides [ndk] Change android ndk root for v8 2018-01-11 08:10:33 +00:00
custom_deps [build] Add common directory for custom deps 2018-06-08 19:23:02 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni Revert "Reland "[build] disable C++ optimization for mksnapshot code."" 2019-02-14 17:18:19 +00:00
include [api] Remove warning about ValueSerializer 2019-02-13 17:40:18 +00:00
infra [test] Raise swarming priority on release branche builders 2019-02-14 12:23:55 +00:00
samples Add a sample that uses the JS API to create wasm 2018-06-07 23:43:38 +00:00
src Add myself to src/libsampler/OWNERS test/cctest/OWNERS 2019-02-14 17:14:27 +00:00
test Add myself to src/libsampler/OWNERS test/cctest/OWNERS 2019-02-14 17:14:27 +00:00
testing Remove dummy files created for rolling googletest. 2018-03-27 05:55:56 +00:00
third_party [DevTools] Roll inspector_protocol (v8) ... 2019-02-14 04:42:24 +00:00
tools [cleanup] Fix kPointerSize in tests 2019-02-14 15:29:52 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +00:00
.clang-tidy [tool] Remove unfixed clang-tidy warnings to ease use. 2018-10-26 07:40:32 +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 .gitattributes: Mark minified emscripten js files as -diff 2018-09-19 16:27:10 +00:00
.gitignore Revert "[build] Port "Add patched eu-strip in third_party"" 2019-01-31 16:44:20 +00:00
.gn [test] Remove obsolete test262 archive extract 2018-03-28 13:52:15 +00:00
.vpython [tools] Correctly identify and report test crashes and infra failures 2018-10-30 15:05:40 +00:00
.ycm_extra_conf.py [ycm] Switch from gnu++11 to gnu++14 2017-11-27 07:48:21 +00:00
AUTHORS DISALLOW_IMPLICIT_CONSTRUCTORS for MacroAssembler 2019-02-07 09:21:34 +00:00
BUILD.gn Revert "Reland "[build] disable C++ optimization for mksnapshot code."" 2019-02-14 17:18:19 +00:00
ChangeLog [release] Merge ChangeLog back to master 2018-12-07 15:41:59 +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 [auto-roller] flatten the recursive deps for chromium buildtools 2019-02-12 09:14:01 +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 Reduce wasm OWNERS to current team members 2018-10-15 14:47:49 +00:00
PRESUBMIT.py Optionally use halfsiphash for integer hashing. 2019-01-09 15:20:51 +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 Reland "Add Windows ARM64 ABI support to V8" 2018-10-24 19:46:36 +00:00
WATCHLISTS Update WATCHLIST wrt yangguo 2018-11-23 08:29:12 +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.