RFR: 8218767: ZGC: Do not assume that r12 is a special register in C2

Erik Österlund erik.osterlund at oracle.com
Wed Feb 20 11:21:26 UTC 2019


+1

/Erik

On 2019-02-20 12:00, Per Liden wrote:
> Updated version rebased on top of JDK-8217909 (which Roman will push 
> soonish).
>
> http://cr.openjdk.java.net/~pliden/8218767/webrev.1
>
> cheers,
> Per
>
> On 2/19/19 2:40 PM, Per Liden wrote:
>> The C2 load barrier code for ZGC assumes that r12 is not used as a 
>> general purpose register. However, JDK-8217909 might change that, so 
>> ZGC should not be making this assumption.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8218767
>> Webrev: http://cr.openjdk.java.net/~pliden/8218767/webrev.0
>>
>> /Per



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