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Clemens Hammacher 8d758abc3e [x64] Fix {Assembler::Nop} for large inputs 
{Assembler::Nop} currently fails if {n} is bigger than {kGap} (the
destructor of {EnsureSpace} checks that not more than {kGap} bytes have
been emitted).
This CL fixes this by repeatedly using {EnsureSpace}, and also
optimizes the implementation of {Assembler::Nop} a bit.
It also removes stray cases for 10 and 11 nop bytes which have been
added in https://crrev.com/8773039 without further comment, and are not
documented in the Intel manual.

R=mstarzinger@chromium.org

Bug: v8:9477
Change-Id: I07bbe311d2daa75dc27b91a0ccb503427c52841f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1708476
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62808}
2019-07-18 15:08:41 +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 [modules] Implement SyntheticModule::ResolveExport and SyntheticModule::Evaluate. 2019-07-09 00:09:32 +00:00
infra [test] Deprecate broken testing on Chromebooks 2019-07-17 07:59:00 +00:00
samples [cleanup] Drop some occurrences of Isolate::Current 2019-06-26 19:39:21 +00:00
src [x64] Fix {Assembler::Nop} for large inputs 2019-07-18 15:08:41 +00:00
test Revert "[runtime] Fix protector invalidation" 2019-07-18 14:51:03 +00:00
testing Add missing owners files 2019-05-31 07:21:01 +00:00
third_party [DevTools] Roll inspector_protocol (V8). 2019-07-03 10:41:47 +00:00
tools [wasm][tests] Add proposal tests to the wasm spec tests 2019-07-17 15:31:31 +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 Update v8 to run on iPhone 2019-07-16 07:31:39 +00:00
BUILD.gn [turbofan] introduce a deterministic tick measurement and assert optimization doesn't take too long 2019-07-17 07:00:00 +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. 2019-07-18 03:36:44 +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 Add mathias@chromium.org as DEPS owner for Test262 rolls 2019-07-10 13:23:00 +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.