| commit | 96b1fdb27689535be5ac44854813711e77dbff41 | [log] [tgz] |
|---|---|---|
| author | Benedikt Meurer <bmeurer@chromium.org> | Thu Nov 02 19:56:02 2017 |
| committer | Commit Bot <commit-bot@chromium.org> | Thu Nov 02 20:57:10 2017 |
| tree | 0514c3b16b6a582a94ce922efeb972ff2917eadb | |
| parent | 0488cb19f712116451b58ea27012fd1b4fe53ef5 [diff] |
[ic] Internalize strings on the fly in KeyedLoadICGeneric. This turns on the existing --internalize_on_the_fly flag for the MEGAMORPHIC KeyedLoadIC to properly internalize strings before looking up the property. This avoids the otherwise taken runtime call to %KeyedGetProperty, which is definitely slower. Initially the --internalize_on_the_fly flag was turned off because internalizing strings on the fly causes too much traffic on the megamorphic stub cache. We avoid this problem here by not probing the stub cache in that case, which still gives the benefit of not having to go to the runtime. This improves the babylon test on the web-tooling-benchmark by around 2-3% and will probably also help with several tests (like React or Ember) on the Speedometer benchmark. If this CL causes trouble (i.e. tanks something important), we can just turn off the --internalize_on_the_fly flag again. Bug: v8:6936, v8:7026 Change-Id: If295ed3fd013f8b0ff031f9979e7df21dab817b6 Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng Reviewed-on: https://chromium-review.googlesource.com/751464 Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#49093}
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.