commit | 84c2dfce432bebbc4bc0f0715167f022413c8ddf | [log] [tgz] |
---|---|---|
author | Juliana Franco <jupvfranco@google.com> | Mon Sep 04 09:51:49 2017 |
committer | Commit Bot <commit-bot@chromium.org> | Mon Sep 04 10:40:31 2017 |
tree | f71dc88b9b59db062d21a106c60df593a7a2081c | |
parent | b7b9114207c718f27811000a3753d8b3602bfb86 [diff] |
Remove weak-list of optimized JS functions. This CL removes the weak-list of JS functions from the context and all the code that iterares over it. This list was being used mainly during deoptimization (for code unlinking) and during garbage collection. Removing it will improve performance of programs that create many closures and trigger many scavenge GC cycles. No extra work is required during garbage collection. However, given that we no longer unlink code from JS functions during deoptimization, we leave it as it is, and on its next activation we check whether the mark_for_deoptimization bit of that code is set, and if it is, than we unlink it and jump to lazy compiled code. This check happens in the prologue of every code object. We needed to change/remove the cctests that used to check something on this list. Working in x64, ia32, arm64, arm, mips64 and mips. Bug: v8:6637 Change-Id: I7f192652c8034b16a9ea71303fa8e78cda3c48f3 Reviewed-on: https://chromium-review.googlesource.com/600427 Commit-Queue: Juliana Patricia Vicente Franco <jupvfranco@google.com> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by: Leszek Swirski <leszeks@chromium.org> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{#47790}
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.