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machenbach 4e7990d394 Revert of Revert of Revert of Promise assimilation fix. (patchset #1 id:1 of https://codereview.chromium.org/1181533006/) 
Reason for revert:
[Sheriff] Changes/breaks layout tests. Please land upstream needsmanualrebaseline requests first or fix the tests.

E.g.
http://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Win/builds/400
One test fails, one times out. See e.g. expectations changes:
https://storage.googleapis.com/chromium-layout-test-archives/V8-Blink_Win/400/layout-test-results/inspector/sources/debugger-async/async-callstack-promises-diff.txt

On linux debug theses tests crash:
http://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064%20%28dbg%29/builds/346
https://storage.googleapis.com/chromium-layout-test-archives/V8-Blink_Linux_64__dbg_/346/layout-test-results/results.html

Original issue's description:
> Revert of Revert of Promise assimilation fix. (patchset #1 id:1 of https://codereview.chromium.org/1176163004/)
>
> Reason for revert:
> Test failures are bogus. Snapshot blob and natives blob are out of sync due to build being weird.
>
> Original issue's description:
> > Revert of Promise assimilation fix. (patchset #8 id:160001 of https://codereview.chromium.org/1098663002/)
> >
> > Reason for revert:
> > Test failures: https://chromegw.corp.google.com/i/client.v8/builders/V8%20Linux64/builds/3829
> >
> > Original issue's description:
> > > Promise assimilation fix.
> > >
> > > Let x be a fulfilled promise and y be another promise. |x.then(() => y)|
> > > should call |y.then|, but the current implementation calls PromiseChain.
> > > We can see the difference when we set a custom function to |y.then|.
> > >
> > > This CL fixes the spec violation, but as a result |then| is no longer
> > > a wrapper of |chain| and in some cases it does not work well with
> > > |accept| or |chain|. That is not a problem for ES6 promise users because
> > > ES6 promise doesn't have them.
> > >
> > > LOG=N
> > > BUG=477921
> > >
> > > Committed: https://crrev.com/2f57dff3ea0c45e1a61b334fda962460f89d71bc
> > > Cr-Commit-Position: refs/heads/master@{#28926}
> >
> > TBR=arv@chromium.org,caitpotter88@gmail.com,rossberg@chromium.org,yhirano@chromium.org
> > NOPRESUBMIT=true
> > NOTREECHECKS=true
> > NOTRY=true
> > BUG=477921
> >
> > Committed: https://crrev.com/5bb75f514027f79303396dba823c2d78c6add83b
> > Cr-Commit-Position: refs/heads/master@{#28927}
>
> TBR=arv@chromium.org,caitpotter88@gmail.com,rossberg@chromium.org,yhirano@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=477921
>
> Committed: https://crrev.com/6f214bdd8bcdc76d48bd85c3bd897f0e2427ff95
> Cr-Commit-Position: refs/heads/master@{#28928}

TBR=arv@chromium.org,caitpotter88@gmail.com,rossberg@chromium.org,yhirano@chromium.org,yangguo@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=477921

Review URL: https://codereview.chromium.org/1181603003

Cr-Commit-Position: refs/heads/master@{#28931}
2015-06-11 09:09:18 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build Revert of Re-land: Enable external startup by default on Linux. (patchset #3 id:40001 of https://codereview.chromium.org/1041683002/) 2015-06-11 08:32:34 +00:00
include Add TypedArray constructors with SharedArrayBuffer to the external API. 2015-06-08 18:24:26 +00:00
infra /infra-config directory 2015-06-01 16:19:49 +00:00
samples Update all callsites of the TryCatch ctor to pass an Isolate 2015-05-28 12:49:41 +00:00
src Revert of Revert of Revert of Promise assimilation fix. (patchset #1 id:1 of https://codereview.chromium.org/1181533006/) 2015-06-11 09:09:18 +00:00
test Revert of Revert of Revert of Promise assimilation fix. (patchset #1 id:1 of https://codereview.chromium.org/1181533006/) 2015-06-11 09:09:18 +00:00
testing Converted V8 CQ config to proto-format 2015-05-28 15:02:53 +00:00
third_party/binutils Ignore unsupport host architectures for binutils download. 2015-02-10 07:51:42 +00:00
tools Whitespace change to test infra change. 2015-06-11 08:57:56 +00:00
.clang-format Change clang-format config to allow for two empty lines between functions 2013-12-03 10:39:21 +00:00
.gitignore Adding ecmascript simd tests. 2015-05-19 10:14:36 +00:00
.ycm_extra_conf.py [ycm] The YouCompleteMe configuration is not VIM specific. 2015-02-12 07:21:13 +00:00
AUTHORS Re-write duplicated assertions 2015-04-01 15:13:21 +00:00
BUILD.gn [destructuring] Refactor duplicate parameter name detection. 2015-06-09 17:13:48 +00:00
ChangeLog Update change log to match roll branch. 2015-05-18 15:03:50 +00:00
codereview.settings Removed TRYSERVER_ROOT since this is not used anymore 2015-01-28 11:04:32 +00:00
DEPS Update V8 DEPS. 2015-06-11 03:28:15 +00:00
LICENSE Update LICENSE date. 2014-02-18 10:50:22 +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
Makefile Introduce a new gyp flag to warn about to be deprecated APIs 2015-05-21 10:34:22 +00:00
Makefile.android introduce android_x64 build target 2015-03-09 03:23:12 +00:00
Makefile.nacl Use the pnacl-clang toolchain for (P)NaCL builds 2014-10-06 08:10:50 +00:00
OWNERS Add Erik Arvidsson to OWNERS 2015-01-28 18:23:29 +00:00
PRESUBMIT.py [test] Add avx2 bot to CQ. 2015-04-30 08:47:49 +00:00
README.md Fix line breaks in md documentation. 2015-03-25 14:54:54 +00:00
WATCHLISTS Temporary auto-CC'ing hablich to x87 changes 2015-05-26 13:05:32 +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://code.google.com/p/v8/

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/*