| commit | c123e6168316fb9cd2fd1df1c9f64ee2fef4e6d8 | [log] [tgz] |
|---|---|---|
| author | Alexandre Talon <atalon@google.com> | Fri Aug 18 14:24:02 2017 |
| committer | Leszek Swirski <leszeks@chromium.org> | Fri Aug 18 14:25:15 2017 |
| tree | a0890b1651a407cb5812d05145e03520935b8f5a | |
| parent | c86ed7e678ddd9f0d80b69ece9490a69519ff197 [diff] |
[Turbofan] Lazy replacement in reduction when possible
Before this CL the reduction, when it replaces a {node} by a new one, called
{replacement}, updates the uses of {node} to now use {replacement} instead,
and marks theses uses for revisit, since they may now be further reduced.
To save the cost of uses traversal, we now change the operator of {node} to
be ReplacementPlaceholder: it becomes a placeholder, and gets replaced as
lazily as possible.
This uses CL https://chromium-review.googlesource.com/c/586550 if available
to mark the graph to be revisited instead of marking uses for revisit.
Bug:v8:6639
Change-Id: I6da3ab811d57a3042054655d241c695232695e17
Reviewed-on: https://chromium-review.googlesource.com/610227
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
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.