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Mythri A d88df03a97 [turboprop] Don't use weak pointers across TryMigrateInstance calls 
We shouldn't spill weak pointers onto the stack when calling functions
that can trigger GC. DynamicMapChecks operator was using feedback loaded
from the feedback vector across the TryMigrateInstance function call.
The feedback can be a weak pointer to receiver map for monomorphic cases
and TryMigrateInstance can trigger a GC. This cl fixes it by holding
a holding a strong reference to the feedback.

Bug: v8:10774,v8:10582,v8:9684
Change-Id: Ia36f4d8ad46421ae570f41439bc1f0875081deee
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2336804
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69338}
2020-08-11 15:54:54 +00:00
build_overrides tracing: Enable using Perfetto client library from Chromium 2020-05-11 11:17:57 +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 Add google_benchmark depdendency 2020-07-02 20:11:29 +00:00
include [atomics] Remove the deprecated Atomics.wake 2020-08-10 23:02:17 +00:00
infra Add v8testing to v8_mac_arm64_rel_ng_triggered 2020-08-10 09:51:35 +00:00
samples cppgc: Add DefaultPlatform and standalone sample 2020-07-23 09:54:32 +00:00
src [turboprop] Don't use weak pointers across TryMigrateInstance calls 2020-08-11 15:54:54 +00:00
test [turboprop] Don't use weak pointers across TryMigrateInstance calls 2020-08-11 15:54:54 +00:00
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AUTHORS [regexp] Add experimental regexp engine flags 2020-08-05 07:05:47 +00:00
BUILD.gn [heap] Split marking worklist into global worklist and local worklists 2020-08-11 13:15:54 +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
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COMMON_OWNERS [owners] Add thibaudm and ecmziegler to COMMON_OWNERS 2020-05-20 18:41:54 +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.