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Zhi An Ng 89ea6caf56 Revert "[wasm-simd][x64] Prototype i32x4.widen_i8x16_{s,u}"
This reverts commit 5a0938e593.

Reason for revert: Broke build https://logs.chromium.org/logs/v8/buildbucket/cr-buildbucket.appspot.com/8857098178780038608/+/steps/Check/0/logs/RunWasm_I32x4WidenI8x16S_liftoff/0

Original change's description:
> [wasm-simd][x64] Prototype i32x4.widen_i8x16_{s,u}
>
> This prototypes i32x4.widen_i8x16_s and i32x4.widen_i8x16_u for x64. It
> uses some masks and pshufb for the widening.  These masks (3 for each
> instruction) are stored as external references.
>
> Bug: v8:11297
> Change-Id: I6c8f55426bbb44b16ed552f393762c34c2524b55
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2617389
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72301}

TBR=neis@chromium.org,gdeepti@chromium.org,neis@google.com,ahaas@chromium.org,zhin@chromium.org

Change-Id: I83aa2e86854e39ac6afd250fdc0dfac7cdd99e6d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:11297
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2648194
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72302}
2021-01-25 22:01:15 +00:00
.github [github] Close PRs created on the V8 GitHub mirror automatically 2021-01-12 08:39:59 +00:00
build_overrides [build] Remove obsolete gn flag 2021-01-11 15:50:59 +00:00
custom_deps Use relative paths to OWNERS files 2019-08-12 13:52:52 +00:00
docs Add OWNERS for docs/ 2019-05-15 12:06:15 +00:00
gni tracing: Initialize track events conditionally 2021-01-18 12:39:03 +00:00
include [modules][api] Stop filtering import assertions based on list provided by the host 2021-01-25 19:30:13 +00:00
infra Fix broken link to infra-side specifications 2021-01-25 15:21:23 +00:00
samples [api] Make ScriptOrigin take isolate as parameter 2021-01-14 23:51:04 +00:00
src Revert "[wasm-simd][x64] Prototype i32x4.widen_i8x16_{s,u}" 2021-01-25 22:01:15 +00:00
test Revert "[wasm-simd][x64] Prototype i32x4.widen_i8x16_{s,u}" 2021-01-25 22:01:15 +00:00
testing build: Remove no-op calls to set_sources_assignment_filter 2020-10-08 14:44:01 +00:00
third_party Remove tebbi from OWNERS and TODOs 2021-01-21 13:23:00 +00:00
tools [Py3] fix py3 issue in tools 2021-01-25 15:33:53 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +00:00
.clang-tidy [tool] Remove unfixed clang-tidy warnings to ease use. 2018-10-26 07:40:32 +00:00
.editorconfig Add .editorconfig 2017-07-28 13:39:24 +00:00
.flake8 Add .flake8 to allow for python style checking. 2019-07-19 21:44:03 +00:00
.git-blame-ignore-revs [infra] Update .git-blame-ignore-revs 2020-03-03 12:59:13 +00:00
.gitattributes .gitattributes: Mark minified emscripten js files as -diff 2018-09-19 16:27:10 +00:00
.gitignore [build] Remove legacy binutils 2021-01-08 12:33:31 +00:00
.gn [build] Dynamically decide if to use system xcode 2019-07-29 08:20:24 +00:00
.vpython [tools] Implement confidence-based number of runs 2019-05-09 09:42:28 +00:00
.ycm_extra_conf.py Fix ycm config for headers without source 2019-12-09 11:59:21 +00:00
AUTHORS Remove duplicate AUTHORS entry 2020-12-08 13:49:34 +00:00
BUILD.gn [build] Introduce gn arg to disable WebAssembly 2021-01-25 16:59:53 +00:00
CODE_OF_CONDUCT.md
codereview.settings Make Gerrit the default code review for V8 2017-06-30 17:37:37 +00:00
COMMON_OWNERS Remove tebbi from OWNERS and TODOs 2021-01-21 13:23:00 +00:00
DEPS Update V8 DEPS. 2021-01-25 07:44:25 +00:00
DIR_METADATA Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
ENG_REVIEW_OWNERS Add eng review owners as escalation path 2019-05-15 19:12:10 +00:00
INFRA_OWNERS Add team members as owners 2020-08-18 08:29:04 +00:00
INTL_OWNERS add ftang as owner 2020-04-24 19:19:36 +00:00
LICENSE [wasm] Draft version of C/C++ Wasm API 2019-04-17 16:00:26 +00:00
LICENSE.fdlibm
LICENSE.strongtalk
LICENSE.v8
MIPS_OWNERS [mips] Request to be an owner of MIPS files 2020-11-23 09:43:49 +00:00
OWNERS Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
PPC_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
PRESUBMIT.py [tools] Format JS files in system-analyzer/ if they're unformatted 2020-11-10 11:02:32 +00:00
README.md [docs] Change links from old wiki to v8.dev 2019-03-07 12:13:30 +00:00
S390_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
WATCHLISTS Add a watchlist for ieee754.(cc|h) changes. 2021-01-11 18:10:19 +00:00

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://v8.dev/docs

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 at v8.dev/docs/contribute.