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Clemens Backes e8ea622d20 [counters] Always provide a backing pointer 
This avoids the {StatsCounter::lookup_done_} field by always
initializing the {StatsCounter::ptr_} field in {StatsCounter::GetPtr()}.
This makes the fast path for updating the counter value much simpler and
faster.

R=mlippautz@chromium.org

Bug: v8:12482
Change-Id: I89d094b15e0417bbfb302006de8eede0c200202d
Cq-Include-Trybots: luci.v8.try:v8_linux64_tsan_rel_ng
Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3322768
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78314}
2021-12-09 08:10:42 +00:00
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bazel [bazel] Upstream arm64 fix 2021-12-01 10:33:09 +00:00
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gni [LOONG64] Add LoongArch64 backend 2021-08-16 13:05:19 +00:00
include [heap] trace heap layout before and after gc 2021-12-08 10:18:16 +00:00
infra [numfuzz] Add interrupt budget also to combined fuzzing 2021-12-02 12:25:45 +00:00
samples [api] V8::Initialize cleanup 2021-11-30 14:30:38 +00:00
src [counters] Always provide a backing pointer 2021-12-09 08:10:42 +00:00
test Revert "[wasm] Add --wasm-dynamic-tiering to --future" 2021-12-08 23:21:24 +00:00
testing [test][cleanup] Fix -Wshadow warnings in unittests 2021-09-27 08:59:01 +00:00
third_party [numbers] Rename ConversionFlags:NO_FLAG to NO_CONVERSION_FLAGS 2021-11-11 22:04:22 +00:00
tools [compiler-dispatcher] Move Job pointer to SFI 2021-12-08 16:03:35 +00:00
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AUTHORS [cppgc][unittests] Only expect guard pages support on 4k platforms. 2021-11-29 10:11:11 +00:00
BUILD.bazel [BUILD] Add yield-processor.h to build files 2021-12-08 14:59:58 +00:00
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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.