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bmeurer 0df0e254a3 [turbofan] Add support for storing to double fields. 
Adds new Guard[Type] common operator, which takes value and control
inputs and records a guaranty that a certain value has a certain type
in that control path.  This is some kind of ad-hoc SSI similar to what
we have to do in Crankshaft in some places.

Also introduces an ObjectIsNumber simplified operator, which checks
whether a certain value is a number (either a Smi or a HeapNumber).

This doesn't yet support transitioning stores to double fields, which
require support for allocating mutable heap numbers.

R=jarin@chromium.org
BUG=v8:4470
LOG=n

Review URL: https://codereview.chromium.org/1420283009

Cr-Commit-Position: refs/heads/master@{#31675}
2015-10-30 10:19:47 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build [swarming] Isolate custom libcxx. 2015-10-27 17:09:31 +00:00
docs [Docs] Make it more clear that a issue on the issue tracker is needed 2015-10-26 09:16:23 +00:00
include Reland v8::Private and related APIs 2015-10-29 14:17:33 +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 [turbofan] Add support for storing to double fields. 2015-10-30 10:19:47 +00:00
test [es6] Partially implement Reflect.getOwnPropertyDescriptor. 2015-10-30 10:05:03 +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 [Release] More information on how to close auto-roller 2015-10-30 09:09:45 +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 [Interpreter] Add support for for..in. 2015-10-29 12:06:24 +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 Remove flags for spread calls and arrays 2015-10-28 15:57:27 +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. 2015-10-30 03:40:56 +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.