AuroraMiddleware/v8
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bmeurer 8d20f2fe37 [builtins] Make Math.ceil, Math.trunc and Math.round optimizable. 
Migrate Math.ceil, Math.round and Math.trunc to TurboFan code stubs,
similar to what we did with Math.floor, and make these builtins properly
optimizable in TurboFan via appropriate simplified operators NumberCeil,
NumberRound and NumberTrunc, which are intended to be reusable for
ToInteger and ToLength optimizations that will be done in a followup CL.

Also allows us to kill the funky %RoundNumber runtime function, which
was quite heavy.

Improve test coverage for Math.ceil and Math.trunc a lot, especially
making sure that we also properly trigger the TurboFan builtin reducer
case.

R=jarin@chromium.org
BUG=v8:4059
LOG=n

Review URL: https://codereview.chromium.org/1841993002

Cr-Commit-Position: refs/heads/master@{#35135}
2016-03-30 11:57:20 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build Revert of [Interpreter] Remove separate Ignition snapshot. (patchset #2 id:20001 of https://codereview.chromium.org/1833643002/ ) 2016-03-24 17:13:10 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
include [api] Add a switch that controls if ES2015 tail call elimination feature is enabled or not. 2016-03-30 11:05:19 +00:00
infra [Coverage] Make coverage a 100% experiment 2016-03-24 13:27:59 +00:00
samples Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
src [builtins] Make Math.ceil, Math.trunc and Math.round optimizable. 2016-03-30 11:57:20 +00:00
test [builtins] Make Math.ceil, Math.trunc and Math.round optimizable. 2016-03-30 11:57:20 +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 [heap] Added fine grained timers to MC_MARK_WEAK_CLOSURE. 2016-03-29 14:52:22 +00:00
.clang-format [formatting] Remove the formatting requirement for 2 empty lines between declarations. 2016-01-25 09:50:17 +00:00
.gitignore [Swarming] Speed up test262 upload/download. 2016-02-19 14:41:29 +00:00
.ycm_extra_conf.py Use C++11 / gnu++11, not 0x 2016-03-22 15:24:43 +00:00
AUTHORS Fix histogram timer to generate ProfViz compatible log. 2016-03-11 10:05:24 +00:00
BUILD.gn Linux perf integration with the new support for JIT. 2016-03-29 06:25:30 +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. 2016-03-29 03:28:28 +00:00
LICENSE Updates to the license information of third party components. 2015-06-16 12:37:50 +00:00
LICENSE.strongtalk
LICENSE.v8
LICENSE.valgrind
Makefile [serializer] Add API to warm up startup snapshot with an additional script. 2016-03-17 10:34:16 +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 [owners] adding more toplevel owners (but mainly me) 2016-03-16 15:54:42 +00:00
PRESUBMIT.py [cq] Automatically use the same bots for git cl try. 2016-01-14 11:15:16 +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 Map arm64 and mips64el -> x64 for mksnapshot 2015-12-16 15:17:37 +00:00
WATCHLISTS [Interpreter] Make InterpreterAssembler a subclass of CodeStubAssembler. 2016-02-10 16:39:32 +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.