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machenbach 5308a999eb Revert of [Turbofan] Fix perf regression (patchset #1 id:1 of https://codereview.chromium.org/1412123009/ ) 
Reason for revert:
[sheriff] breaks benchmarks:
http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20debug/builds/4998

Original issue's description:
> [Turbofan] Fix perf regression introduced by per-range change.
>
> When the range ends just at the gap of a non-deferred block, the last
> instruction the range covers is in the predecessor. If that predecessor is
> a deferred block, before this CL, we would splinter the remainder of the
> range all the way to the end. That leads to inefficient codegen, because
> we still want a split inside the deferred block.
>
> Also, opportunistically added a trace before we splinter, for better
> diagnostics.
>
> BUG= chromium:546416
> LOG=N
>
> Committed: https://crrev.com/32b6e085e74a8fcf94a01d20740fe4fdede07a86
> Cr-Commit-Position: refs/heads/master@{#31529}

TBR=bmeurer@chromium.org,jarin@chromium.org,mtrofin@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG= chromium:546416

Review URL: https://codereview.chromium.org/1412893007

Cr-Commit-Position: refs/heads/master@{#31531}
2015-10-23 17:40:22 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build [test] Make cfi more verbose. 2015-10-21 13:35:42 +00:00
docs [Docs] Fix some nits discovered while converting to Markdown 2015-10-05 14:47:42 +00:00
include Plumb accessing context through to access control callbacks 2015-10-23 08:13:53 +00:00
infra Use committer list from chrome-infra-auth group project-v8-committers 2015-08-27 16:10:22 +00:00
samples Fix crash in shell.cc when reporting exceptions that aren't Errors 2015-10-20 14:33:52 +00:00
src Revert of [Turbofan] Fix perf regression (patchset #1 id:1 of https://codereview.chromium.org/1412123009/ ) 2015-10-23 17:40:22 +00:00
test X87: disable the regress-undefined-nan test case for x87. 2015-10-23 15:48:35 +00:00
testing Converted V8 CQ config to proto-format 2015-05-28 15:02:53 +00:00
third_party/binutils Update binutils version. 2015-08-07 08:09:49 +00:00
tools Move RootIndexMap out of serializer file. 2015-10-23 08:28:38 +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 [test] Pull benchmarks as a dependency. 2015-10-19 08:42:16 +00:00
.ycm_extra_conf.py [ycm] The YouCompleteMe configuration is not VIM specific. 2015-02-12 07:21:13 +00:00
AUTHORS Emit better error message about writable properties 2015-10-14 19:22:27 +00:00
BUILD.gn Move RootIndexMap out of serializer file. 2015-10-23 08:28:38 +00:00
ChangeLog Update change log to match roll branch. 2015-05-18 15:03:50 +00:00
codereview.settings Use v8-reviews@ for review mail, so v8-dev@ is free for dev discussions 2015-09-09 08:14:11 +00:00
DEPS Update V8 DEPS. 2015-10-22 03:23:56 +00:00
LICENSE Updates to the license information of third party components. 2015-06-16 12:37:50 +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 MIPS64: Add big-endian support for mips64. 2015-09-29 17:23:55 +00:00
Makefile.android Reland [android] Migrate more configs to gyp. 2015-06-26 12:04:09 +00:00
Makefile.nacl Use the pnacl-clang toolchain for (P)NaCL builds 2014-10-06 08:10:50 +00:00
OWNERS Update OWNERS file. 2015-07-16 11:37:51 +00:00
PRESUBMIT.py Remove unused function in presubmit script 2015-09-23 10:52:45 +00:00
README.md [Docs] Add information on how to contribute to the README 2015-09-15 07:53:13 +00:00
snapshot_toolchain.gni Split the GN 'snapshot_toolchain' logic out into an include file. 2015-09-22 02:28:40 +00:00
WATCHLISTS Add an interpreter watchlist 2015-10-23 15:43:37 +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/*

Contributing

Please follow the instructions mentioned on the V8 wiki.