3f22832be7
This is the next step towards faster Map and Set iteration. It introduces the appropriate instance types for Map and Set iterators (following the pattern for Array iterators) and migrates the following builtins to the CodeStubAssembler: - Set.prototype.entries - Set.prototype.values - Map.prototype.entries - Map.prototype.keys - Map.prototype.values - %SetIteratorPrototype%.next - %MapIteratorPrototype%.next This already provides a significant performance boost for regular for-of iteration of Sets and Maps, by a factor of 5-10 depending on the input. The final step will be to inline some fast-paths into TurboFan. Drive-by-fix: Remove obsolete %IsJSSetIterator and %IsJSMapIterator intrinsics and runtime functions. Bug: v8:6571, chromium:740122 Change-Id: Iad7a7dec643d8f8b5799327f89a351108ae856bf Reviewed-on: https://chromium-review.googlesource.com/563399 Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#46492} |
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benchmarks | ||
build_overrides | ||
docs | ||
gni | ||
gypfiles | ||
include | ||
infra | ||
samples | ||
src | ||
test | ||
testing | ||
third_party | ||
tools | ||
.clang-format | ||
.gitignore | ||
.gn | ||
.ycm_extra_conf.py | ||
AUTHORS | ||
BUILD.gn | ||
ChangeLog | ||
CODE_OF_CONDUCT.md | ||
codereview.settings | ||
DEPS | ||
LICENSE | ||
LICENSE.fdlibm | ||
LICENSE.strongtalk | ||
LICENSE.v8 | ||
LICENSE.valgrind | ||
Makefile | ||
Makefile.android | ||
OWNERS | ||
PRESUBMIT.py | ||
README.md | ||
snapshot_toolchain.gni | ||
WATCHLISTS |
V8 JavaScript Engine
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
Getting the Code
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/*
Contributing
Please follow the instructions mentioned on the V8 wiki.