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Tobias Tebbi 59e8d45ad8 [torque] multiple arrays in one object 
This allows the definition of classes with several arrays and ports
SmallOrderedHashTable subclasses to Torque as an example, including
the existing CSA allocation functions for them.

Overview of changes:
- Introduce ResidueClass to encapsulate the modulo-arithmetic
  necessary to do alignment checks.
- Add MachineOperatorReducer to the CSA pipeline to address now
  missing CSA ad-hoc constant folding that got blocked by a
  temporary phi.
- Allow assignments to references to structs. This is needed to
  initialize the data_table part of SmallOrderedHashMap.
- Make the NumberLiteralExpression AST-node store a double instead
  of a string. This is necessary to detect arrays with constant size
  used for padding.
- Turn offsets into base::Optional<size_t> to ensure we don't use
  an invalid or statically unknown offset.
- Remove CreateFieldReferenceInstruction since it doesn't work for
  complex offset computations and the logic can be expressed better
  in ImplementationVisitor.
- Validate alignment of structs embedded in classes.

Bug: v8:10004 v8:7793
Change-Id: Ifa414b42278e572a0c577bf9da3d37f80771a258
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1958011
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65538}
2019-12-20 14:10:22 +00:00
build_overrides Use relative paths to OWNERS files 2019-08-12 13:52:52 +00:00
custom_deps Use relative paths to OWNERS files 2019-08-12 13:52:52 +00:00
docs Add OWNERS for docs/ 2019-05-15 12:06:15 +00:00
gni [heap-profiler] Expose 'globalObjectsAsRoots' via inspector interface 2019-12-18 10:18:58 +00:00
include [unwinder] Add a new API based on code pages for arm32 support 2019-12-19 12:59:35 +00:00
infra Add more shards to arm sim bots 2019-12-18 16:25:53 +00:00
samples [cleanup] Drop some occurrences of Isolate::Current 2019-06-26 19:39:21 +00:00
src [torque] multiple arrays in one object 2019-12-20 14:10:22 +00:00
test [torque] multiple arrays in one object 2019-12-20 14:10:22 +00:00
testing Use relative paths to OWNERS files 2019-08-12 13:52:52 +00:00
third_party [DevTools] Roll inspector_protocol (V8) 2019-12-19 00:15:48 +00:00
tools Store JSMessageObject on rejected promises 2019-12-18 12:07:03 +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
.flake8 Add .flake8 to allow for python style checking. 2019-07-19 21:44:03 +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 Add .clangd to .gitignore 2019-12-01 11:39:11 +00:00
.gn [build] Dynamically decide if to use system xcode 2019-07-29 08:20:24 +00:00
.vpython [tools] Implement confidence-based number of runs 2019-05-09 09:42:28 +00:00
.ycm_extra_conf.py Fix ycm config for headers without source 2019-12-09 11:59:21 +00:00
AUTHORS [builtins] Port Number.prototype.toString to Torque 2019-11-05 11:00:26 +00:00
BUILD.gn [torque] Implement Rest/Strict/Sloppy argument stubs in Torque 2019-12-19 11:00:10 +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 Remove mstarzinger@ from OWNERS files. 2019-12-13 11:13:14 +00:00
DEPS Update V8 DEPS. 2019-12-20 03:48:52 +00:00
ENG_REVIEW_OWNERS Add eng review owners as escalation path 2019-05-15 19:12:10 +00:00
INFRA_OWNERS Remove myself from owners 2019-12-12 14:22:32 +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 syg@chromium.org as DEPS owner for test262 rolls 2019-09-17 19:29:11 +00:00
PPC_OWNERS Move architecture dependent files 2019-05-28 14:02:15 +00:00
PRESUBMIT.py Remove and update some outdated TODO(mstarzinger). 2019-12-13 10:18:04 +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 Remove 'profiler' category from WATCHLISTS 2019-10-21 08:23:59 +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.