commit | 96671ab2e0c64c1c02b361d8c327bdea8655f8b1 | [log] [tgz] |
---|---|---|
author | Clemens Hammacher <clemensh@chromium.org> | Mon Jan 07 13:03:38 2019 |
committer | Commit Bot <commit-bot@chromium.org> | Mon Jan 07 13:38:33 2019 |
tree | be09907aedc54fe478a16eab23e8b5585789e576 | |
parent | 81becb8c1074d4d1f90c12d267634a10c4e4986c [diff] |
[Liftoff] Change the way we store stack transfers Stack transfers consist of a number of register moves plus a number of register loads. We currently store both in separate vectors. This CL changes that to be stored in arrays indexed by the destination register (such that it behaves like a map). This avoids any dynamically growing structures. Measured locally, this speeds up stack transfer processing by ~10%, which translates to ~0.5% of overall Liftoff compilation time. R=ahaas@chromium.org Bug: v8:6600, v8:8423 Change-Id: Id532960dcc12f228507ed75e392ad4c57710593f Reviewed-on: https://chromium-review.googlesource.com/c/1396278 Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Reviewed-by: Andreas Haas <ahaas@chromium.org> Cr-Commit-Position: refs/heads/master@{#58587}
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.