Heads-up: Upcoming removal of non-shared pointer compression cage mode

[Igor Sheludko]

Hello V8 Users,

TL;DR;: in order to reduce the number of supported modes and code complexity we are planning to remove support for per-Isolate pointer compression cages in the near future.

Shared pointer compression cage mode has been shipping on x64 and arm64 since May 2021 and it's a strong requirement for V8 Sandbox and JS shared memory features, not to mention it solves address space exhaustion issue on Android.

Please let us know if you have any objections.

--

Igor Sheludko

Software Engineer

ish...@google.com

Google Germany GmbH

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