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Bill Budge 9da4e36390 Reland "Reland "Reland "[compiler][wasm] Align Frame slots to value size""" 
This is a reland of 352b9ecbdb

The test/fix CL has been merged in, as the fixes to return slot
accounting are needed to fix Arm64 issues turned up by the fuzzers:

https://chromium-review.googlesource.com/c/v8/v8/+/2644139

Original change's description:
> Reland "Reland "[compiler][wasm] Align Frame slots to value size""
>
> This is a reland of 1694925c72
>
> Minor fix to linkage for constexpr.
>
> TBR=ahaas@chromium.org,neis@chromium.org
>
> Original change's description:
> > Reland "[compiler][wasm] Align Frame slots to value size"
> >
> > This is a reland of cddaf66c37
> >
> > Original change's description:
> > > [compiler][wasm] Align Frame slots to value size
> > >
> > > - Adds an AlignedSlotAllocator class and tests, to unify slot
> > >   allocation. This attempts to use alignment holes for smaller
> > >   values.
> > > - Reworks Frame to use the new allocator for stack slots.
> > > - Reworks LinkageAllocator to use the new allocator for stack
> > >   slots and for ARMv7 FP register aliasing.
> > > - Fixes the RegisterAllocator to align spill slots.
> > > - Fixes InstructionSelector to align spill slots.
> > >
> > > Bug: v8:9198
> > >
> > > Change-Id: Ida148db428be89ef95de748ec5fc0e7b0358f523
> > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2512840
> > > Commit-Queue: Bill Budge <bbudge@chromium.org>
> > > Reviewed-by: Georg Neis <neis@chromium.org>
> > > Reviewed-by: Andreas Haas <ahaas@chromium.org>
> > > Cr-Commit-Position: refs/heads/master@{#71644}
> >
> > Bug: v8:9198
> > Change-Id: Ib91fa6746370c38496706341e12d05c7bf999389
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2633390
> > Commit-Queue: Bill Budge <bbudge@chromium.org>
> > Reviewed-by: Andreas Haas <ahaas@chromium.org>
> > Reviewed-by: Georg Neis <neis@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#72195}
>
> Bug: v8:9198
> Change-Id: I91e02b823af8ec925dacf075388fb22e3eeb3384
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2640890
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72209}

Bug: v8:9198
Change-Id: I8258f87463f66417c7028b9a1fed4b9b6d82a3be
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2669892
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72506}
2021-02-03 16:50:47 +00:00
.github [github] Close PRs created on the V8 GitHub mirror automatically 2021-01-12 08:39:59 +00:00
build_overrides [build] Remove obsolete gn flag 2021-01-11 15:50:59 +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 tracing: Initialize track events conditionally 2021-01-18 12:39:03 +00:00
include cppgc: Add testing API structure 2021-02-03 16:00:37 +00:00
infra [test] Update Mac testing from 10.13 to 10.15 2021-02-03 16:26:57 +00:00
samples [api] Make ScriptOrigin take isolate as parameter 2021-01-14 23:51:04 +00:00
src Reland "Reland "Reland "[compiler][wasm] Align Frame slots to value size""" 2021-02-03 16:50:47 +00:00
test Reland "Reland "Reland "[compiler][wasm] Align Frame slots to value size""" 2021-02-03 16:50:47 +00:00
testing build: Remove no-op calls to set_sources_assignment_filter 2020-10-08 14:44:01 +00:00
third_party Remove tebbi from OWNERS and TODOs 2021-01-21 13:23:00 +00:00
tools [tools] Fix whitespace 2021-02-03 15:42:11 +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 [infra] Update .git-blame-ignore-revs 2020-03-03 12:59:13 +00:00
.gitattributes .gitattributes: Mark minified emscripten js files as -diff 2018-09-19 16:27:10 +00:00
.gitignore [build] Remove legacy binutils 2021-01-08 12:33:31 +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 Remove duplicate AUTHORS entry 2020-12-08 13:49:34 +00:00
BUILD.gn Reland "Reland "Reland "[compiler][wasm] Align Frame slots to value size""" 2021-02-03 16:50:47 +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 tebbi from OWNERS and TODOs 2021-01-21 13:23:00 +00:00
DEPS Update V8 DEPS. 2021-02-02 03:49:53 +00:00
DIR_METADATA Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
ENG_REVIEW_OWNERS Add eng review owners as escalation path 2019-05-15 19:12:10 +00:00
INFRA_OWNERS Add team members as owners 2020-08-18 08:29:04 +00:00
INTL_OWNERS add ftang as owner 2020-04-24 19:19:36 +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
MIPS_OWNERS [mips] Request to be an owner of MIPS files 2020-11-23 09:43:49 +00:00
OWNERS Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
PPC_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
PRESUBMIT.py cppgc: Add testing API structure 2021-02-03 16:00:37 +00:00
README.md [docs] Change links from old wiki to v8.dev 2019-03-07 12:13:30 +00:00
S390_OWNERS Adding myself to relevant OWNERS files. 2020-11-02 16:37:28 +00:00
WATCHLISTS Add a watchlist for ieee754.(cc|h) changes. 2021-01-11 18:10:19 +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.