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Leszek Swirski ad2fc65680 Revert "[compiler] Enable feedback collection in generic lowering" 
This reverts commit e63bae121b.

Reason for revert: Speculatively reverting since NCI is disabled and _WithFeedback builtins are hot in speedometer.

Original change's description:
> [compiler] Enable feedback collection in generic lowering
>
> Turbofan now has support for generating generic code in two variants,
> with and without feedback collection. Currently, feedback is collected
> only for some load and store operators (historical reasons).
>
> This CL enables feedback collection for (almost) all operators by
> default. The exception in the default TF configuration are call and
> construct variants (see also https://crrev.com/c/2276042). In NCI mode,
> all operators collect feedback.
>
> Regression have looked acceptable in our benchmarks so far. This is an
> experiment to see impact on real world. If successful, the
> non-collecting variants can be removed.
>
> Bug: v8:8888
> Change-Id: I0dddc7113ce94071552d5c4d992471db5ac5f989
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2239571
> Auto-Submit: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Commit-Queue: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#68710}

Bug: v8:8888
Change-Id: I5622528383c6194ccda639041291900144465782
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4110858
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#84904}
2022-12-16 13:26:00 +00:00
.github [github] Close PRs created on the V8 GitHub mirror automatically 2021-01-12 08:39:59 +00:00
bazel [bazel] Add hide symbols from release build 2022-11-22 10:00:46 +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 [reland] adds the ability for v8 to use sin/cos from libm 2022-12-02 21:59:04 +00:00
include unified-young-gen: Filter custom weak callbacks 2022-12-16 10:15:12 +00:00
infra Doubling shards for slow tests on V8 Linux(64) - debug 2022-12-08 14:42:17 +00:00
samples [sandbox] Initialize sandbox during V8::Initialize 2022-07-15 09:29:32 +00:00
src Revert "[compiler] Enable feedback collection in generic lowering" 2022-12-16 13:26:00 +00:00
test [wasm-gc] Subtyping support for call_indirect 2022-12-16 13:24:24 +00:00
testing [test] Migrate cctest/test-api-accessors.cc to unittests/ 2022-05-17 08:27:55 +00:00
third_party [reland] adds the ability for v8 to use sin/cos from libm 2022-12-02 21:59:04 +00:00
tools Update V8 DEPS (trusted) 2022-12-16 09:03:22 +00:00
.bazelrc [bazel] Use v8_enable_handle_zapping only in debug builds. 2022-01-11 11:32:39 +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 remove swarming_client 2021-08-24 10:39:33 +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 Adds sin/cos from glibc 2022-11-30 09:20:05 +00:00
.gn [fuchsia] Add API target level default value 2022-08-29 14:46:45 +00:00
.mailmap Add .mailmap entries for jgruber 2022-08-04 08:53:02 +00:00
.style.yapf [tools] Add basic pointer compression to grokdump 2022-02-04 14:35:26 +00:00
.vpython3 Reland "[resultdb] Add ResultDB indicator" 2022-10-14 11:05:59 +00:00
.ycm_extra_conf.py [ycm] Fix YouCompleteMe config 2022-11-02 15:59:48 +00:00
AUTHORS [fastcall] Support external pointers in fast api calls 2022-12-01 14:19:33 +00:00
BUILD.bazel [turboshaft] Implement %CheckTurboshaftTypeOf intrinsic to test typer 2022-12-16 10:10:58 +00:00
BUILD.gn [turboshaft] Implement %CheckTurboshaftTypeOf intrinsic to test typer 2022-12-16 10:10:58 +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 mliedtke to COMMON_OWNERS 2022-09-16 14:12:27 +00:00
DEPS Update V8 DEPS (trusted) 2022-12-16 09:03:22 +00:00
DIR_METADATA Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
ENG_REVIEW_OWNERS Add mlippautz@ to ENG_REVIEW_OWNERS. 2022-10-06 18:48:33 +00:00
INFRA_OWNERS [infra] Add alexschulze@ as infra owner 2022-07-18 09:08:54 +00:00
INTL_OWNERS add ftang as owner 2020-04-24 19:19:36 +00:00
LICENSE [mips32] Delete mips32 from v8 2022-09-13 07:54:54 +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
LOONG_OWNERS [LOONG64] Add LoongArch64 backend 2021-08-16 13:05:19 +00:00
MIPS_OWNERS [mips] Add LiuYu to MIPS_OWNERS 2021-09-08 01:38:52 +00:00
OWNERS Make .ycm_extra_conf owned by COMMON_OWNERS 2022-11-07 09:51:53 +00:00
PPC_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
PRESUBMIT.py [presubmit] Handle Windows path for header guard check 2022-12-13 17:30:02 +00:00
README.md [docs] Change links from old wiki to v8.dev 2019-03-07 12:13:30 +00:00
RISCV_OWNERS Add Lu Yahan to RISC-V owners list 2021-09-13 16:35:00 +00:00
S390_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
WATCHLISTS Reland "[WATCHLISTS] Add riscv watch" 2022-08-19 07:33:57 +00:00
WORKSPACE [bazel] Remove zlib dependency 2022-08-17 15:30:25 +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.