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Camillo Bruni ecc3cd256a [tools] Improve gcmole part II 
Prepare gcmole.cc for the next update:
- Print possible GC locations when discovering stale/dead variables
- Make error messages less confusing for the modern V8 engineer
- Prepare gcmole to read suspects.allowlist instead of .whitelist
- Use more readable variable names
- Only log non-found types with --verbose
- Change the currently unusued gccauses format in gcmole.py and
  support loading it back in gcmole.cc
- Implemented first basic gc call-chain printing (disabled by default)

GCmole packaging:
- Add debug mode to bootstrap.sh build script
- Update gcmole.py run instructions in bootstrap.sh and package.sh

Bug: v8:10009
Change-Id: I369d48baa2980455d2e8f57e7a803d0384fe83f1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3480095
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79357}
2022-03-04 01:06:11 +00:00
.github [github] Close PRs created on the V8 GitHub mirror automatically 2021-01-12 08:39:59 +00:00
bazel [bazel] Improve bazel build 2022-02-16 11:40:13 +00:00
build_overrides [build] Remove obsolete gn flag 2021-01-11 15:50:59 +00:00
custom_deps
docs
gni [cleanup] Remove deprecated build flag v8_enable_raw_heap_snapshots 2022-02-18 16:21:20 +00:00
include cppgc: Refactor prefinalizers 2022-03-02 19:14:39 +00:00
infra [tools] Improve gcmole part I: command line 2022-03-03 15:01:15 +00:00
samples Initialize V8 sandbox in samples 2022-02-14 11:15:10 +00:00
src [tools] Improve gcmole part II 2022-03-04 01:06:11 +00:00
test [builtins] Fix binding function with native data property accessors 2022-03-04 00:50:51 +00:00
testing [test][cleanup] Fix -Wshadow warnings in unittests 2021-09-27 08:59:01 +00:00
third_party [infra] Fork test262-harness 2022-02-23 18:47:35 +00:00
tools [tools] Improve gcmole part II 2022-03-04 01:06:11 +00:00
.bazelrc [bazel] Use v8_enable_handle_zapping only in debug builds. 2022-01-11 11:32:39 +00:00
.clang-format
.clang-tidy
.editorconfig
.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
.gitignore [infra] Fork test262-harness 2022-02-23 18:47:35 +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
.style.yapf [tools] Add basic pointer compression to grokdump 2022-02-04 14:35:26 +00:00
.vpython Verify mac-arm64 wheels for v8/.vpython spec. 2021-09-15 21:11:50 +00:00
.vpython3 Use numpy 1.2x.supported.1 in V8 2022-03-03 15:21:21 +00:00
.ycm_extra_conf.py [ycm] Fix python script 2021-07-29 09:48:32 +00:00
AUTHORS [riscv64] Add RVV Float-Point Widening Instructions 2022-02-22 10:59:25 +00:00
BUILD.bazel Move utils/pointer-with-payload.h -> base/pointer-with-payload.h 2022-03-03 11:44:23 +00:00
BUILD.gn [maglev] Add a skeleton MaglevConcurrentDispatcher impl 2022-03-03 17:32:21 +00:00
CODE_OF_CONDUCT.md
codereview.settings
COMMON_OWNERS Update OWNERS files 2022-02-16 08:16:04 +00:00
DEPS Update V8 DEPS. 2022-03-03 03:56:40 +00:00
DIR_METADATA Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
ENG_REVIEW_OWNERS Add verwaest@ to ENG_REVIEW_OWNERS. 2021-09-16 15:00:57 +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
LICENSE.fdlibm
LICENSE.strongtalk
LICENSE.v8
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 Let infra owners own all dot files 2021-11-05 18:57:18 +00:00
PPC_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
PRESUBMIT.py [infra] migrate the main PRESUBMIT script to py3 2022-02-18 13:44:33 +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 Update WATCHLISTS 2022-02-24 11:37:36 +00:00
WORKSPACE [bazel] Cleanup style with Buildifier. 2022-01-11 10:00:36 +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.