[aarch64-port-dev ] RFR: 8231754: [JVMCI] Make r27 unconditionally reserved in JVMCI

[dean.long at oracle.com]

Wouldn't it be better to make r27 callee-saved in 
cpu/aarch64/sharedRuntime_aarch64.cpp:RegisterSaver::save_live_registers()?

dl

On 10/10/19 6:43 PM, Pengfei Li (Arm Technology China) wrote:
> FW aarch64-port-dev as this is AArch64 related.
>
> --
> Thanks,
> Pengfei
>
>> Hello,
>>
>> Please review the following small change to reserve r27 (heap base
>> register) on AArch64 unconditionally, i.e., regardless of whether compressed
>> oops is enabled or not.
>>
>> http://cr.openjdk.java.net/~yzheng/8231754/
>> https://bugs.openjdk.java.net/browse/JDK-8231754
>>
>> Many thanks,
>> -Yudi