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Andreas Haas 1e4282db0d Reland "[wasm] Re-exported globals preserve their identity"
This is a reland of f7a1932ef9

There was a wpt test in Chrome that expected the incorrect behavior.
I disable the test in https://crrev.com/c/2264418 so that we can land
the fix here.

Original change's description:
> [wasm] Re-exported globals preserve their identity
>
> V8 fails a recently added spec test that when an imported global get
> re-exported, it should preserve its identity. This CL fixes the behavior
> in V8.
>
> Drive-by change: fix the object printer of globals: a global which
> stores a reference type only has a tagged buffer, a global which stores
> a value type only has an untagged buffer.
>
> R=clemensb@chromium.org
>
> Bug: v8:10556
> Change-Id: I949d147fe4395610cfec6cf60082e1faecb23036
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2235702
> Commit-Queue: Andreas Haas <ahaas@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#68513}

Bug: v8:10556
Change-Id: I8e1b08fc9f72dde166cba167e6e320e714796769
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2264097
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68552}
2020-06-25 18:12:41 +00:00
build_overrides tracing: Enable using Perfetto client library from Chromium 2020-05-11 11:17:57 +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 Integrate fuzzilli into v8 2020-06-03 09:53:24 +00:00
include [d8] Changes needed for testing Atomics.waitasync 2020-06-25 14:13:06 +00:00
infra Remove unmaintained trybots 2020-06-24 12:49:32 +00:00
samples cppgc: Introduce AllocationHandle 2020-06-10 23:11:20 +00:00
src Reland "[wasm] Re-exported globals preserve their identity" 2020-06-25 18:12:41 +00:00
test Reland "[wasm] Re-exported globals preserve their identity" 2020-06-25 18:12:41 +00:00
testing Roll v8/third_party/googletest/src/ 10b1902d8..e3f0319d8 (43 commits) 2020-04-15 07:23:10 +00:00
third_party [torque] format namespaces without indentation 2020-05-12 14:06:17 +00:00
tools [wasm][tests] Remove BigInt proposal tests 2020-06-25 14:43:05 +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 Add third_party/jsoncpp/source to .gitignore 2020-04-29 07:20:41 +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 [tools] Map search bar feature added, map id changed from int to string 2020-06-18 11:09:21 +00:00
BUILD.gn Updated BUILD.gn to link fuzzilli 2020-06-25 08:46:32 +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 [owners] Add thibaudm and ecmziegler to COMMON_OWNERS 2020-05-20 18:41:54 +00:00
DEPS Revert "Update V8 DEPS." 2020-06-25 11:35:37 +00:00
ENG_REVIEW_OWNERS Add eng review owners as escalation path 2019-05-15 19:12:10 +00:00
INFRA_OWNERS Remove myself from owners 2019-12-12 14:22:32 +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
LICENSE.valgrind Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
MIPS_OWNERS Move architecture dependent files 2019-05-28 14:02:15 +00:00
OWNERS Add syg@chromium.org as DEPS owner for test262 rolls 2019-09-17 19:29:11 +00:00
PPC_OWNERS Move architecture dependent files 2019-05-28 14:02:15 +00:00
PRESUBMIT.py Remove the #undef check from the Presubmit for .cc files 2020-01-24 15:24:51 +00:00
README.md [docs] Change links from old wiki to v8.dev 2019-03-07 12:13:30 +00:00
S390_OWNERS Move architecture dependent files 2019-05-28 14:02:15 +00:00
WATCHLISTS Stop watching for API changes in WATCHLISTS 2020-04-08 07:06:45 +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.