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Clemens Hammacher 3b808dee68 Reland^2 "Remove all custom CopyCharsUnsigned implementations" 
This is an unmodified reland of
9febc505bd. Nosnap bots do not block
LKGR any more: https://crbug.com/v8/9737#c10.

Original change's description:
> Reland "Remove all custom CopyCharsUnsigned implementations"
>
> This is a reland of 5d8c489000
>
> Original change's description:
> > Remove all custom CopyCharsUnsigned implementations
> >
> > It's unclear whether the custom implementation have any advantage over
> > the standard library one's.
> > Since we update our toolchain and standard library regularly, it might
> > well be the case that the custom implementations are slower by now.
> >
> > Thus this CL removes all {CopyCharsUnsigned} implementations and
> > implements {CopyChars} generically using {std::copy_n}.
> >
> > Note that this does not touch the {MemMove} and {MemCopy} functions
> > yet, as we have seen regressions when trying to remove them before
> > (https://crbug.com/v8/8675#c5).
> >
> > R=leszeks@chromium.org
> >
> > Bug: v8:9396
> > Change-Id: I97a183afebcccd2fbb567bdba02e827331475608
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1800577
> > Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> > Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#63808}
>
> Bug: v8:9396
> Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
> Change-Id: I9cd754ebe6b802bb4aabd6d2a448de41da040874
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807357
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63823}

TBR=leszeks@chromium.org

Bug: v8:9396
Change-Id: I793524d76b8b9c93d2a98c73e8d72967880fe1cf
Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1809362
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63857}
2019-09-18 07:45:43 +00:00
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include Revert "Reland "Remove all custom CopyCharsUnsigned implementations"" 2019-09-17 23:32:55 +00:00
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src Reland^2 "Remove all custom CopyCharsUnsigned implementations" 2019-09-18 07:45:43 +00:00
test [wasm] Enable shared GrowMemory by default 2019-09-17 23:41:43 +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.