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Georg Neis 1a7b24012b Revert "Reland "Enable lazy source positions by default"" 
This reverts commit a05bcc3afd.

Reason for revert: Still issues with maybe_assigned, blocking roll.

Original change's description:
> Reland "Enable lazy source positions by default"
> 
> Second attempt to reland 69fafb5fe3
> now that the maybe_assigned bug is fixed.
> 
> > Original change's description:
> > Enable lazy source positions by default
> >
> > Also adds a compile time flag which allows the default to be configured
> > so node can disable it since it hangs the node cpu profiler tests.
> >
> > Bug: v8:8510
> > Change-Id: Idf4785036dc6242769410091518a67ac9179b718
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1491491
> > Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> > Commit-Queue: Dan Elphick <delphick@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#62089}
> 
> Bug: v8:8510
> Change-Id: Ia6d5d1d3a3c2b6a14c70ee67b02bec62a6a1a1d4
> Cq-Include-Trybots: luci.v8.try:v8_linux_gc_stress_dbg, v8_linux64_gc_stress_custom_snapshot_dbg_ng
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1679498
> Commit-Queue: Dan Elphick <delphick@chromium.org>
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#62411}

TBR=rmcilroy@chromium.org,delphick@chromium.org

Change-Id: I52b2924e05ff87f6469be4723e5e13979d1aeffa
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8510
Cq-Include-Trybots: luci.v8.try:v8_linux_gc_stress_dbg, v8_linux64_gc_stress_custom_snapshot_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1680553
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62428}
2019-06-27 16:52:10 +00:00
benchmarks Add missing owners files 2019-05-31 07:21:01 +00:00
build_overrides Clean up infra owners 2019-05-15 11:18:43 +00:00
custom_deps Clean up infra owners 2019-05-15 11:18:43 +00:00
docs Add OWNERS for docs/ 2019-05-15 12:06:15 +00:00
gni [tracing] Fix perfetto build caused by invalid sources 2019-06-24 15:03:31 +00:00
include [DevTools] V8StackTrace: Add the ability to limit the max async depth... 2019-06-26 15:17:19 +00:00
infra [test] Update comment about adding more swarming attributes. 2019-06-27 08:21:12 +00:00
samples [cleanup] Drop some occurrences of Isolate::Current 2019-06-26 19:39:21 +00:00
src Revert "Reland "Enable lazy source positions by default"" 2019-06-27 16:52:10 +00:00
test [wasm-c-api] Faster C-to-Wasm entry 2019-06-27 13:39:48 +00:00
testing Add missing owners files 2019-05-31 07:21:01 +00:00
third_party [torque] Support 'real' internal classes 2019-06-21 16:09:28 +00:00
tools [gdb] Add gdb macro 'pn' that prints TurboFan nodes 2019-06-27 13:29:08 +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
.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-c-api] Un-.gitignore third_party/wasm-api/ 2019-06-17 08:52:37 +00:00
.gn v8: Stop setting secondary_source. 2019-05-13 16:06:53 +00:00
.vpython [tools] Implement confidence-based number of runs 2019-05-09 09:42:28 +00:00
.ycm_extra_conf.py [ycm] Switch from gnu++11 to gnu++14 2017-11-27 07:48:21 +00:00
AUTHORS GCC: explicitely instantiate JSObject::ApplyAttributesToDictionary for NumberDictionary 2019-06-11 14:36:05 +00:00
BUILD.gn Revert "Reland "Enable lazy source positions by default"" 2019-06-27 16:52:10 +00:00
ChangeLog [release] Merge ChangeLog back to master 2018-12-07 15:41:59 +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 solanes@ to COMMON_OWNERS 2019-05-22 13:50:51 +00:00
DEPS Update V8 DEPS. 2019-06-27 03:55:29 +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 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 Make nested DEPS files commonly owned 2019-06-18 14:31:05 +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.