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jkummerow 6270b797bc Only try to unregister prototype users that are prototypes themselves 
Because only such maps would have been registered in the first place.
This is a performance fix/followup to f6187fb3b5 / r28076.

BUG=chromium:481785
LOG=n
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1105063003

Cr-Commit-Position: refs/heads/master@{#28101}
2015-04-28 11:02:18 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build [clang] Use -Wshorten-64-to-32 to enable warnings about 64bit to 32bit truncations. 2015-04-28 06:53:41 +00:00
include Extending v8::GetHeapStatistics to return total available size. 2015-04-28 10:57:15 +00:00
samples [clang] Use -Wshorten-64-to-32 to enable warnings about 64bit to 32bit truncations. 2015-04-28 06:53:41 +00:00
src Only try to unregister prototype users that are prototypes themselves 2015-04-28 11:02:18 +00:00
test Port CallSite methods to C++. 2015-04-28 08:52:47 +00:00
testing [cq] Add mips compile trybots. 2015-04-14 13:43:32 +00:00
third_party/binutils Ignore unsupport host architectures for binutils download. 2015-02-10 07:51:42 +00:00
tools [test] Restrict msan to default variant. 2015-04-28 09:05:11 +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 Use cctest to track memory stats for isolate and context. 2015-04-10 14:13:25 +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 Removed src/{isolate,property-details,utils}-inl.h 2015-04-21 10:21:37 +00:00
ChangeLog Upgrade version and change log after branch. 2014-11-10 10:41:13 +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. 2015-04-28 03:27:32 +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 Makefile: introduce debugsymbols=on flag 2015-04-15 15:20:18 +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 [cq] Add mips compile trybots. 2015-04-14 13:43:32 +00:00
README.md Fix line breaks in md documentation. 2015-03-25 14:54:54 +00:00
WATCHLISTS Add yangguo@chromium.org to src/snapshot/OWNERS and WATCHLISTS 2015-04-07 13:38:29 +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/*