[jdk11u-dev] RFR: 8248238: Implementation: JEP 388: Windows AArch64 Support [v3]

[Vladimir Kempik]

On one side - we should be as close to original commit in jdk/jdk as possible
on another side - r18_tls sounds windows-aarch64 only, r18_reserved sounds more general ( works for both macos/win).

> 15 окт. 2021 г., в 19:37, Reka Kovacs <duke at openjdk.java.net> написал(а):
> 
> On Fri, 15 Oct 2021 08:42:46 GMT, Andrew Haley <aph at openjdk.org> wrote:
> 
>>> I believe this concern is addressed by [openjdk/jdk#5828](https://github.com/openjdk/jdk/pull/5828). Are you okay with leaving this patch as-is and backporting that soon after?
>> 
>>> The register named `r18_tls` on tip has been renamed to `r18_reserved` in this backport.
>> 
>> Why has it been renamed `r18_reserved` ?
> 
> Turns out I was missing some history & context on this - it was `r18_reserved` originally, but there was a partial rewrite to `r18_tls` that I finished in the wrong direction. @lewurm's testing the fix, then I'll update.
> 
> -------------
> 
> PR: https://git.openjdk.java.net/jdk11u-dev/pull/301