[aarch64-port-dev ] RFR: JDK8u-only: Fix MacroAssembler::mov() over-strict assert

[Roman Kennke]

Am 05.12.2017 um 15:00 schrieb Andrew Dinn:
> Hi Roman,
> 
> On 05/12/17 12:31, Roman Kennke wrote:
> <snip>
>> An alternative could be to keep the assert in place, but use a better
>> dead value, e.g. badHeapOop from globalDefinitions.hpp . In this case I
>> would bring 9 and 10 in sync too.
>>
>> What do you think?
> I think it is a good idea to keep the assert. So, badheapOop it is . . .

Ok. That makes the fix simpler:
http://cr.openjdk.java.net/~rkennke/aarch64-jdk8u-movoops/webrev.01/

Ok? I'd push it into aarch64-port/jdk8u and let 
aarch64-port/jdk8u-shenandoah pick it up through regular merge-flow.

Do you think it's worth to also put it upstream? We don't have this 
problem there because the assert is not present in upstream. I'd have to 
put back both the assert and the badHeapOop change. ?

Thanks, Roman