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ulan f86aadd1d4 Reland "Filter invalid slots out from the SlotsBuffer after marking." 
> There are two reasons that could cause invalid slots appearance in SlotsBuffer:
> 1) If GC trims "tail" of an array for which it has already recorded a slots and then migrate another object to the "tail".
> 2) Tagged slot could become a double slot after migrating of an object to another map with "shifted" fields (for example as a result of generalizing immutable data property to a data field).

> This CL also adds useful machinery that helps triggering incremental write barriers.

> BUG=chromium:454297
> LOG=Y

NOTRY=true

Review URL: https://codereview.chromium.org/1032833002

Cr-Commit-Position: refs/heads/master@{#27433}
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include Revert of Track how many pages trigger fallback strategies in GC (patchset #2 id:20001 of https://codereview.chromium.org/1029323003/) 2015-03-24 22:02:37 +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://code.google.com/p/v8/

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/*