RFR: 8222825: ARM32 SIGILL issue on single core CPU (not supported PLDW instruction)

[dean.long at oracle.com]

This looks good.  In arm.ad, you could use two rules and a predicate, so 
that the PrintOptoAssembly output is correct.

dl

On 5/13/19 11:04 PM, Boris Ulasevich wrote:
> Hi David,
>
>   It took a time to test the change :)
>   Yes, please. Thank you!
>
> Boris
>
> 14.05.2019 8:00, David Holmes пишет:
>> Hi Boris,
>>
>> I was wondering what had happened to this one :)
>>
>> Looks good! I can sponsor for you.
>>
>> Thanks,
>> David
>>
>> On 14/05/2019 2:45 pm, Boris Ulasevich wrote:
>>> Hi all,
>>>
>>> Please review the fix for SIGILL that happens on ARM32 CPU without 
>>> Multiprocessing Extensions support (this applies to single-core 
>>> arm32 processors, which are not very common this days). With the fix 
>>> we check PLDW instruction availability on JVM start-up to correct 
>>> further instructions generation.
>>>
>>> https://bugs.openjdk.java.net/browse/JDK-8222825
>>> http://cr.openjdk.java.net/~bulasevich/8222825/webrev.03.jdk-jdk
>>>
>>> thanks,
>>> Boris
>
>