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caitp c18d4216a4 [csa] add utilities for printf-style debugging
Adds CSA::Print(const char* s), which generates a runtime call to
Runtime::kGlobalPrint with a line-terminated ASCII string constant,
and CSA::DebugPrint(const char* prefix, Node* tagged_value), which
emits a runtime call to Runtime::kDebugPrint() with the tagged
value, optionally prefixed by an ascii string constant.

These simplify debugging TF builtins by providing a tool to easily
observe the contents of values at arbitrary points in a program,
without stepping endlessly through assembly in a debugger, and to
easily observe the path taken through a TF builtin.

These methods do not generate code in release builds.

BUG=v8:5268
R=ishell@chromium.org, danno@chromium.org, bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/2651673003
Cr-Commit-Position: refs/heads/master@{#42660}
2017-01-25 15:45:57 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build_overrides Conditionally convert V8 build overrides to declare_args. 2017-01-25 00:20:56 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni Conditionally convert V8 build overrides to declare_args. 2017-01-25 00:20:56 +00:00
gypfiles Revert of [build] Introduce an embedder version string (patchset #3 id:40001 of https://codereview.chromium.org/2619213002/ ) 2017-01-21 22:36:54 +00:00
include Add Isolate parameter to disallow Atomics.wait 2017-01-23 22:06:12 +00:00
infra Infra CQ config: remove deprecated target_ref. 2017-01-17 21:42:28 +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 [csa] add utilities for printf-style debugging 2017-01-25 15:45:57 +00:00
test [wasm] Fix the --wasm_code_fuzzer_gen_test again. 2017-01-25 14:10:04 +00:00
testing Use GTEST_LANG_CXX11 in V8 2016-07-25 13:06:42 +00:00
third_party Do not ignore inspector_protocol and binutils directories 2017-01-16 13:22:00 +00:00
tools [foozzie] Fix mock variables that leaked into the global object 2017-01-25 14:59:39 +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 [parser]: Skipping inner funcs / initial implemetation of storing scope analysis data from preparsed scopes. 2017-01-25 13:03:19 +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. 2017-01-25 11:09:32 +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 Add v8_os_page_size flag for cross compilation 2016-11-15 14:41:03 +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

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.