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Andreas Haas cace2f533e Reland "[wasm] Support partial serialization of modules" 
The original CL was flaky because deserialization did not wait correctly
for the compilation of missing functions to finish. The baseline-finished
event was set even when there were still some functions missing. The
combination of deserialization and lazy compilation was also not handled
correctly.

Original change's description:
> [wasm] Support partial serialization of modules
>
> At the moment a WebAssembly module can be serialized successfully when
> all functions were compiled with TurboFan. However, for some functions
> it may not be necessary to be compiled with TurboFan, e.g. for functions
> where Liftoff code is as good as TurboFan code.
>
> With this CL we allow WebAssembly modules to get serialized even when
> not all functions are compiled with TurboFan. Missing functions are
> marked as missing in the serlialization. Upon deserialization, missing
> functions either get compiled by Liftoff, or initialized with a
> lazy-compilation stub, depending on the V8 configuration.
>
> Bug: v8:11862

Change-Id: I79a9e8e14199cff87fce6ae41a87087e047bbc65
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3060485
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#76017}
2021-07-30 11:18:38 +00:00
.github [github] Close PRs created on the V8 GitHub mirror automatically 2021-01-12 08:39:59 +00:00
bazel [bazel] Support build mode compilation 2021-07-13 10:14:16 +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 [bigint] Toom-Cook multiplication 2021-07-07 10:12:26 +00:00
include [fastcall] Type-specialize CopyAndConvertArrayToCppBuffer 2021-07-30 10:52:12 +00:00
infra Add two V8 Linux64 - builder shadows. 2021-07-29 08:31:17 +00:00
samples Reland "[api] Add v8::Isolate::ThrowError helper" 2021-04-16 11:48:05 +00:00
src Reland "[wasm] Support partial serialization of modules" 2021-07-30 11:18:38 +00:00
test Reland "[wasm] Support partial serialization of modules" 2021-07-30 11:18:38 +00:00
testing [macros] Upstream Google3 changes 2021-06-24 16:36:14 +00:00
third_party Roll inspector-protocol to 32cf5f2bf4dc20c73ead291e68d2e2f6b638cd57 2021-07-09 13:01:24 +00:00
tools [builtins] Implement Array#findFromLast and friends 2021-07-29 19:37:15 +00:00
.bazelrc [bazel] Support build mode compilation 2021-07-13 10:14:16 +00:00
.clang-format
.clang-tidy
.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
.gitignore [log] Include tickprocessor log files in git 2021-06-21 15:26:29 +00:00
.gn Revert "[build] Separate out inspector as a shared library" 2021-07-02 16:15:20 +00:00
.mailmap Restore consistency between .mailmap and AUTHORS 2021-06-24 08:58:04 +00:00
.vpython [tools] Implement confidence-based number of runs 2019-05-09 09:42:28 +00:00
.ycm_extra_conf.py [ycm] Fix python script 2021-07-29 09:48:32 +00:00
AUTHORS Promises: Add is_silent flag and ignore rejects when it is set 2021-07-07 08:48:00 +00:00
BUILD.bazel [builtins] Implement Array#findFromLast and friends 2021-07-29 19:37:15 +00:00
BUILD.gn [builtins] Implement Array#findFromLast and friends 2021-07-29 19:37:15 +00:00
CODE_OF_CONDUCT.md Explicitly state that the Chromium Code of Conduct also applies to V8 2016-03-02 09:51:24 +00:00
codereview.settings Make Gerrit the default code review for V8 2017-06-30 17:37:37 +00:00
COMMON_OWNERS Remove ulan@ from OWNERS 2021-06-08 13:10:21 +00:00
DEPS Update google_benchmark 2021-07-30 05:45:56 +00:00
DIR_METADATA Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
ENG_REVIEW_OWNERS Update ENG_REVIEW_OWNERS 2021-02-25 14:28:32 +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 Add LICENSE.fdlibm for all the fdlibm imported sources. 2016-06-09 07:17:03 +00:00
LICENSE.strongtalk Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.v8 Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
MIPS_OWNERS [mips] Request to be an owner of MIPS files 2020-11-23 09:43:49 +00:00
OWNERS Fix OWNERS for port files 2021-07-23 08:48:53 +00:00
PPC_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
PRESUBMIT.py [bigint] Move multiplication to src/bigint/ 2021-04-19 15:40:43 +00:00
README.md
RISCV_OWNERS [riscv64] Change one of the owners for RISCV. 2021-04-20 14:39:26 +00:00
S390_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
WATCHLISTS [bazel] Add bazel files to watchlist 2021-06-17 09:26:11 +00:00
WORKSPACE [bazel] Adds ICU 2021-06-30 12:54:15 +00:00

README.md

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.