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Clemens Hammacher 185922de91 [wasm] Distinguish requested tier and executed tier 
During execution, the tier can be switch from Liftoff to TurboFan. We
already handle this in some locations by getting the tier before
execution, so that we later know which was the requested tier for that
unit.
In the case of the --wasm-tier-mask-for-testing flag, this accounting
was not right because the tier was already switched in the constructor.
This CL changes the compilation units to store both the requested and
the executed tier explicitly, so we know which counter to decrement
when the unit finishes.

R=ahaas@chromium.org

Bug: chromium:925671
Change-Id: I673463135e9b3ab17e40cfdfd5d3a526ad5a9b79
Reviewed-on: https://chromium-review.googlesource.com/c/1442639
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59168}
2019-01-29 12:36:48 +00:00
benchmarks [test] Ensure random generator in JSTests does not use float arithmetic 2018-12-17 10:05:08 +00:00
build_overrides [ndk] Change android ndk root for v8 2018-01-11 08:10:33 +00:00
custom_deps [build] Add common directory for custom deps 2018-06-08 19:23:02 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni [gn] Update link to v8 blog 2019-01-02 10:29:47 +00:00
include [api][wasm] Remove deprecated objects and methods 2019-01-28 13:14:38 +00:00
infra [build][test] Remove configs for interpreted-regexp builder 2019-01-29 11:17:32 +00:00
samples Add a sample that uses the JS API to create wasm 2018-06-07 23:43:38 +00:00
src [wasm] Distinguish requested tier and executed tier 2019-01-29 12:36:48 +00:00
test [wasm] Distinguish requested tier and executed tier 2019-01-29 12:36:48 +00:00
testing Remove dummy files created for rolling googletest. 2018-03-27 05:55:56 +00:00
third_party Roll inspector_protocol to 8515c2a1c5c016646b61221586cd4e5839f425ee 2019-01-25 22:41:26 +00:00
tools Revert "[release] Temporarily remove two gpu bots from V8 auto-roller" 2019-01-29 09:54:48 +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 [build] Add DEPS formatting to hyper-blame 2017-10-09 14:08:45 +00:00
.gitattributes .gitattributes: Mark minified emscripten js files as -diff 2018-09-19 16:27:10 +00:00
.gitignore Revert "Reland "[build] Pull binutils via DEPS"" 2018-12-13 12:05:58 +00:00
.gn [test] Remove obsolete test262 archive extract 2018-03-28 13:52:15 +00:00
.vpython [tools] Correctly identify and report test crashes and infra failures 2018-10-30 15:05:40 +00:00
.ycm_extra_conf.py [ycm] Switch from gnu++11 to gnu++14 2017-11-27 07:48:21 +00:00
AUTHORS [builtins] Prevent result truncation when formatting dates 2019-01-28 12:09:59 +00:00
BUILD.gn [build][test] Remove configs for interpreted-regexp builder 2019-01-29 11:17:32 +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
DEPS [wasm] update DEPS wasm-js 2019-01-29 10:32:11 +00:00
LICENSE Add antlr4 runtime library to support Torque 2018-04-10 10:01:01 +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
OWNERS Reduce wasm OWNERS to current team members 2018-10-15 14:47:49 +00:00
PRESUBMIT.py Optionally use halfsiphash for integer hashing. 2019-01-09 15:20:51 +00:00
README.md [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
snapshot_toolchain.gni Reland "Add Windows ARM64 ABI support to V8" 2018-10-24 19:46:36 +00:00
WATCHLISTS Update WATCHLIST wrt yangguo 2018-11-23 08:29:12 +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://github.com/v8/v8/wiki

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 on the V8 wiki.