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jarin 59c616ccd7 [turbofan] Introduce node regions for protection from scheduling. 
This CL re-purposes ValueEffect and Finish as delimiters for regions
that are scheduled atomically (renamed to BeginRegion, FinishRegion).

The BeginRegion node takes and produces an effect. For the uses that do
not care about the placement in the effect chain, it is ok to feed
graph->start() as an effect input.

The FinishRegion takes a value and an effect and produces a value and
an effect. It is important that any value or effect produced inside the
region is not used outside the region. The FinishRegion node is the only
way to smuggle an effect and a value out.

At the moment, this does not support control flow inside the region. Control flow would be hard.

During scheduling we do some sanity check, but the checks are not exhaustive. Here is what we check:
- the effect chain between begin and finish is linear (no splitting,
  single effect input and output).
- any value produced is consumed by the FinishRegion node.
- no control flow outputs.

Review URL: https://codereview.chromium.org/1399423002

Cr-Commit-Position: refs/heads/master@{#31265}
2015-10-14 14:53:12 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build [swarming] Isolate test262. 2015-10-14 08:44:27 +00:00
docs [Docs] Fix some nits discovered while converting to Markdown 2015-10-05 14:47:42 +00:00
include Reland: Introduce a V8_NORETURN macro and use it to make GCC 4.9.2 happy again. 2015-10-08 19:03:24 +00:00
infra Use committer list from chrome-infra-auth group project-v8-committers 2015-08-27 16:10:22 +00:00
samples Rework startup-data-util. 2015-08-14 12:11:46 +00:00
src [turbofan] Introduce node regions for protection from scheduling. 2015-10-14 14:53:12 +00:00
test [turbofan] Introduce node regions for protection from scheduling. 2015-10-14 14:53:12 +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 Add C++ implementation of Object.defineProperties 2015-10-13 14:38:35 +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 test262 as a dependency. 2015-10-08 14:40:52 +00:00
.ycm_extra_conf.py [ycm] The YouCompleteMe configuration is not VIM specific. 2015-02-12 07:21:13 +00:00
AUTHORS Don’t smash globals used by the test helper itself. 2015-09-24 21:47:17 +00:00
BUILD.gn Use //build_overrides instead of //build/modules for GN builds. 2015-10-13 23:56:25 +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. 2015-10-13 03:23:09 +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 Debugger: move implementation to a separate folder. 2015-07-31 11:08:15 +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.