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bjaideep 7c982e7ecf PPC/s390: [Turbofan]: Use new MachineTypes in access-builder. 
Port 56429fc146

Original Commit Message:

    Introduced MachineType::TaggedSigned() and TaggedPointer().

    The idea is to quit using the representational dimension of Type, and
    instead encode this information in the MachineRepresentation (itself
    lightly wrapped in MachineType, along with MachineSemantic).

    There are three parts to the whole change:

    1) Places that set the machine representation - constant nodes, loads nad
       stores, global object and native context specialization.

    2) Places that propagate type/representation - this is representation
       inference (aka simplified lowering). At the end of this process we
       expect to have a MachineRepresentation for every node. An interesting
       part of this is phi merging.

    3) Places that examine representation - WriteBarrier elimination does this.
       Currently it's looking at the Type representation dimension, but as
       a part of this change (or in a soon-to-follow change) it can simply
       examine the MachineRepresentation.

R=mvstanton@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2662223003
Cr-Commit-Position: refs/heads/master@{#42817}
2017-01-31 15:40:26 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build_overrides Remove build_overrides/v8.gni. 2017-01-26 20:18:58 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni Revert of [test] Add back lsan leak detection (patchset #4 id:60001 of https://codereview.chromium.org/2592663004/ ) 2017-01-31 15:12:08 +00:00
gypfiles Revert of [test] Add back lsan leak detection (patchset #4 id:60001 of https://codereview.chromium.org/2592663004/ ) 2017-01-31 15:12:08 +00:00
include [d8] Use ValueSerializer for postMessage (instead of ad-hoc serializer) 2017-01-27 20:15:37 +00:00
infra Enable gerrit-based CQ for v8 2017-01-30 21:24:35 +00:00
samples Reland of land "Turn libbase into a component" (patchset #1 id:1 of https://codereview.chromium.org/2396933002/ ) 2016-10-07 07:56:52 +00:00
src PPC/s390: [Turbofan]: Use new MachineTypes in access-builder. 2017-01-31 15:40:26 +00:00
test [ast/parsing] Pessimistically assume all top-level variables will be assigned. 2017-01-31 13:35:52 +00:00
testing Use GTEST_LANG_CXX11 in V8 2016-07-25 13:06:42 +00:00
third_party Adapt StringBuilder's append and toString methods via StringUtil helper. 2017-01-27 21:11:15 +00:00
tools Revert of [test] Add back lsan leak detection (patchset #4 id:60001 of https://codereview.chromium.org/2592663004/ ) 2017-01-31 15:12:08 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +00:00
.gitignore Do not ignore inspector_protocol and binutils directories 2017-01-16 13:22:00 +00:00
.gn [build] Roll build a3b623a:11a223f 2016-11-29 11:17:15 +00:00
.ycm_extra_conf.py Use C++11 / gnu++11, not 0x 2016-03-22 15:24:43 +00:00
AUTHORS [counters] Add UseCounters for 'f() = 0' syntax 2016-12-27 17:48:40 +00:00
BUILD.gn [turbofan] Support fast access to the current global object. 2017-01-31 06:47:01 +00:00
ChangeLog [Release] Update ChangeLog file 2016-02-17 21:29:09 +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 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. 2017-01-31 04:31:51 +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
Makefile Make enabling of CSA verifier a build-time flag 2017-01-27 11:32:27 +00:00
Makefile.android [build] Fix d8-for-Android builds 2016-05-20 12:10:45 +00:00
OWNERS Make clemensh owner (wasm, asmjs and general) 2017-01-13 10:20:44 +00:00
PRESUBMIT.py [test] Only run presubmit for changed status files 2016-12-06 11:42:11 +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 Use clang for snapshot_toolchain by default, except on ChromeOS. 2016-08-23 14:04:27 +00:00
WATCHLISTS [inspector] added devtools-reviews@chromium.org in WATCHLISTS for inspector 2016-09-29 15:16:54 +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.