commit | 24b88776aa5159e19c5f86c841e4c288d1f0615f | [log] [tgz] |
---|---|---|
author | Jakob Kummerow <jkummerow@chromium.org> | Fri Aug 25 00:52:49 2017 |
committer | Commit Bot <commit-bot@chromium.org> | Sat Aug 26 00:58:02 2017 |
tree | fdc6b42b425858d9a03dea324d1088cf9b77f3b8 | |
parent | 109e8b98f5247144e36a04b1acc97ae352e5bc6e [diff] |
[modules] Speed up access to module exports By adding LoadIC support for JSModuleNamespace objects. The index of the corresponding slot in the Module's "exports" dictionary is cached in the feedback vector, so the value can be loaded directly, without having to call the C++ accessor. This speeds up the "foo" property access in code like the following snippet by about 10x: import * as m from "module.js" m.foo; Bug: v8:1569 Change-Id: I152abedcbdc6f90b5bedd203cfdf97ed88d1137c Reviewed-on: https://chromium-review.googlesource.com/631136 Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by: Adam Klein <adamk@chromium.org> Cr-Commit-Position: refs/heads/master@{#47625}
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
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/*
Please follow the instructions mentioned on the V8 wiki.