> On Aug 27, 2018, at 2:30 AM, Magnus Ihse Bursie
> <magnus.ihse.bur...@oracle.com> wrote:
>
> On 2018-08-23 17:13, Bob Vandette wrote:
>> As a follow-on to the previous thread "ARM port consolidation” [1],
>> please review and comment on this newly filed JEP that removes
>> one of the two AArch64 ports from the JDK.
>>
>> JEP:
>>
>> https://bugs.openjdk.java.net/browse/JDK-8209093
> Looks good! (Or as we say in Sweden: Äntligen! :-))
>
> One question: I remember there were some guys from Linaro who compared
> aarch64 vs arm64 in microbenchmarks, and found that while aarch64 had the
> superior performance most of the time, there were some benchmarks where arm64
> was fastest.
>
> Has these been analyzed, and the performance on aarch64 brought in line with
> arm64?
It looks like this question has been answered.
>
>> Here’s a prototype of the changes that would be done under this JEP.
>>
>> http://cr.openjdk.java.net/~bobv/8209093/webrev.00
>
> Generally looks good. I have not looked at too much detail since it's just a
> prototype, but I noted that you just removed --with-cpu-port, instead of
> deprecating it. That needs to be fixed for the real deal.
What’s the process for deprecation of build options? Do I just change the help
text and have the arm64 option select the aarch64 port?
Thanks,
Bob.
>
> /Magnus
>
>
>
>>
>>
>> [1] http://mail.openjdk.java.net/pipermail/hotspot-dev/2018-June/032756.html
>>
>> Bob.
>>
>>
>>
>>
>
