RFR: 8289743: AArch64: Clean up patching logic

[David Holmes]

On Tue, 19 Jul 2022 10:10:25 GMT, Andrew Haley <aph at openjdk.org> wrote:

>>> To be on the safe side I'm putting this through our internal testing. Please hold off integrating until I give it the green light. Thanks.
>> 
>> OK, thanks. There's no hurry, and no need to get this one into the next release.
>
>> To be on the safe side I'm putting this through our internal testing. Please hold off integrating until I give it the green light. Thanks.
> 
> Would you like to do this again, please? It's been largely rewritten after review feedback.

@theRealAph  - our internal testing all passed: tiers 1-4

-------------

PR: https://git.openjdk.org/jdk/pull/9398