RFR: 8297830: aarch64: Make Address a discriminated union internally

Wed Nov 30 18:19:45 UTC 2022

On Wed, 30 Nov 2022 16:45:35 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> The driver for all these cleanups around aarch64 Address is that when I tried to fix JDK-8160404 I got (valid) compiler warnings here about UB.

Aha! Thanks. It's good to have that here, in the discussion.

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PR: https://git.openjdk.org/jdk/pull/11429