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yangguo 35c28ce0a7 Debugger: prepare code for debugging on a per-function basis. 
Prior to this patch, we enter a global debug mode whenever a break point
is set. By entering this mode, all code is deoptimized and activated
frames are recompiled and redirected to newly compiled debug code.

After this patch, we only deoptimize/redirect for functions we want to
debug. Trigger for this is Debug::EnsureDebugInfo, and having DebugInfo
object attached to the SFI prevents optimization/inlining.

The result is that we can have optimized code for functions without break
points alongside functions that do have break points, which are not
optimized.

R=mstarzinger@chromium.org, ulan@chromium.org
BUG=v8:4132
LOG=Y

Review URL: https://codereview.chromium.org/1233073005

Cr-Commit-Position: refs/heads/master@{#29758}
2015-07-20 14:53:37 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build Add -Wshorten-64-to-32 flag to mac builds. 2015-07-14 16:05:29 +00:00
include Delete APIs deprecated since last release 2015-07-17 09:27:00 +00:00
infra V8 project metadata 2015-07-13 14:40:44 +00:00
samples Let the second pass phantom callbacks run in a separate task on the foreground thread. 2015-07-15 12:26:11 +00:00
src Debugger: prepare code for debugging on a per-function basis. 2015-07-20 14:53:37 +00:00
test Debugger: prepare code for debugging on a per-function basis. 2015-07-20 14:53:37 +00:00
testing Converted V8 CQ config to proto-format 2015-05-28 15:02:53 +00:00
third_party/binutils Ignore unsupport host architectures for binutils download. 2015-02-10 07:51:42 +00:00
tools Atomics Futex API 2015-07-17 17:11:47 +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 Adding ecmascript simd tests. 2015-05-19 10:14:36 +00:00
.ycm_extra_conf.py [ycm] The YouCompleteMe configuration is not VIM specific. 2015-02-12 07:21:13 +00:00
AUTHORS Make NumberFormat use the ICU currency data, fix bug in NumberFormat 2015-07-17 15:08:08 +00:00
BUILD.gn Atomics Futex API 2015-07-17 17:11:47 +00:00
ChangeLog Update change log to match roll branch. 2015-05-18 15:03:50 +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. 2015-07-19 03:26:40 +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 Add goma=on option to Makefile build. 2015-07-09 09:50:59 +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 Improve presubmit check for BUG line 2015-07-17 12:21:47 +00:00
README.md Fix line breaks in md documentation. 2015-03-25 14:54:54 +00:00
WATCHLISTS Removing hablich from auto CC of x87 2015-06-30 11:29:57 +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/*