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Leszek Swirski b293533ed8 Revert "Reland "[ic] In-place Double -> Tagged transitions"" 
This reverts commit 981aafaf97.

Reason for revert: Still crashing on Canary.

Original change's description:
> Reland "[ic] In-place Double -> Tagged transitions"
>
> This is a reland of 0736599a69.
> This is a reland of 7e1fbe8f34.
>
> Original change description:
> > [ic] In-place Double -> Tagged transitions
> >
> > With no more MutableHeapNumber, we can make Double -> Tagged transitions
> > in-place, at the cost of an extra map check when accessing double fields
> > to make sure they are still doubles.
> >
> > Bug: v8:9606
> > Change-Id: I74ff39ed6fba62ee223cd37dfe761f7d73020e1c
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1743973
> > Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> > Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> > Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#63374}
>
> TBR=verwaest@chromium.org, tebbi@chromium.org
>
> Bug: v8:9606
> Change-Id: I2d1b7416064d743582f4983fb868316b7e8a4cf2
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1777661
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63499}

TBR=leszeks@chromium.org, verwaest@chromium.org, tebbi@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: v8:9606
Bug: chromium:997989
Change-Id: Ic95166e67df68e84a524dffd8155121c3ff6aa13
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1784283
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63550}
2019-09-04 11:39:43 +00:00
benchmarks Use relative paths to OWNERS files 2019-08-12 13:52:52 +00:00
build_overrides Use relative paths to OWNERS files 2019-08-12 13:52:52 +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 Use relative paths to OWNERS files 2019-08-12 13:52:52 +00:00
include Revert "Reland x5 [arraybuffer] Rearchitect backing store ownership" 2019-08-30 08:23:40 +00:00
infra infra: make Win64 ASAN bots request Windows-10-15063. 2019-08-31 08:13:16 +00:00
samples [cleanup] Drop some occurrences of Isolate::Current 2019-06-26 19:39:21 +00:00
src Revert "Reland "[ic] In-place Double -> Tagged transitions"" 2019-09-04 11:39:43 +00:00
test Revert "Reland "[ic] In-place Double -> Tagged transitions"" 2019-09-04 11:39:43 +00:00
testing Use relative paths to OWNERS files 2019-08-12 13:52:52 +00:00
third_party [wasm-c-api] Roll bf31edf: Fix life times of host info 2019-08-26 14:28:51 +00:00
tools [foozzie] Enable wasm staging on correctness fuzzer 2019-09-02 13:41:34 +00:00
.clang-format
.clang-tidy [tool] Remove unfixed clang-tidy warnings to ease use. 2018-10-26 07:40:32 +00:00
.editorconfig
.flake8 Add .flake8 to allow for python style checking. 2019-07-19 21:44:03 +00:00
.git-blame-ignore-revs Add recent code rewrite to .git-blame-ignore-revs 2019-05-23 10:38:45 +00:00
.gitattributes .gitattributes: Mark minified emscripten js files as -diff 2018-09-19 16:27:10 +00:00
.gitignore [wasm] Add proposal js-api spec tests to the testrunner 2019-08-28 04:59:21 +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
AUTHORS [wasm][anyref] fix decoding of table index immediates 2019-08-20 14:54:59 +00:00
BUILD.gn [builtins] Port RegExp.p.match to Torque 2019-09-03 17:26:51 +00:00
ChangeLog [release] Merge ChangeLog back to master 2018-12-07 15:41:59 +00:00
CODE_OF_CONDUCT.md
codereview.settings
COMMON_OWNERS [OWNERS] Add solanes@ to COMMON_OWNERS 2019-05-22 13:50:51 +00:00
DEPS Update V8 DEPS. 2019-09-04 03:44:20 +00:00
ENG_REVIEW_OWNERS Add eng review owners as escalation path 2019-05-15 19:12:10 +00:00
INFRA_OWNERS Clean up infra owners 2019-05-15 11:18:43 +00:00
INTL_OWNERS Add missing owners files 2019-05-31 07:21:01 +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
LICENSE.valgrind
MIPS_OWNERS Move architecture dependent files 2019-05-28 14:02:15 +00:00
OWNERS Use relative paths to OWNERS files 2019-08-12 13:52:52 +00:00
PPC_OWNERS Move architecture dependent files 2019-05-28 14:02:15 +00:00
PRESUBMIT.py Reland "Move logging and diagnostics related source files" 2019-05-20 09:54:57 +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 Move remaining files in src/ 2019-05-24 18:24:36 +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.