commit | 5232b938d7113415bd469f6ef5bf270c4fb2313d | [log] [tgz] |
---|---|---|
author | Benedikt Meurer <bmeurer@chromium.org> | Fri Aug 17 11:20:36 2018 |
committer | Commit Bot <commit-bot@chromium.org> | Fri Aug 17 12:01:44 2018 |
tree | 35b529e9e6b1860b5877ca21adbaeee951b716ce | |
parent | 2f3e1a09e95d41c8e395be9ba6d82ebd5b4a4115 [diff] |
[turbofan] Optimize index checking for DataView accesses. Use CheckBounds and reduce the number of checks required to sanitize the indices for DataView accesses in optimized code. Also constant-fold the [[ByteLength]] if the DataView is a known compile-time constant (similar to what we do for TypedArrays already). This further improves performance of DataViews by 2-7% depending on the exact test case. With this change DataView and TypedArray accesses themselves are mostly on par performance wise. Bug: chromium:225811 Change-Id: I6838339108b8a4dcf9b13ddecab40f1c3632967c Reviewed-on: https://chromium-review.googlesource.com/1179741 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Commit-Queue: Sigurd Schneider <sigurds@chromium.org> Reviewed-by: Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#55190}
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.