[13] RFR (T): 8217919: C2: Enable -XX:+AggressiveUnboxing by default

[Nils Eliasson]

+1

/ Nils

On 2019-02-01 06:48, Vladimir Kozlov wrote:
> Agree.
>
> Thanks,
> Vladimir
>
> On 1/31/19 11:16 AM, Vladimir Ivanov wrote:
>> http://cr.openjdk.java.net/~vlivanov/8217919/webrev.00/
>> https://bugs.openjdk.java.net/browse/JDK-8217919
>>
>> Once JDK-8217918 [1] is fixed, I propose to enable 
>> -XX:+AggressiveUnboxing by default.
>>
>> The optimization noticeably improves EA for primitive boxes (e.g., 
>> JDK-8055340 [2]), so it's worth having it turned on. It'll also 
>> ensure the code won't rot again.
>>
>> Testing: hs-precheckin-comp, tier1-5
>>
>> Best regards,
>> Vladimir Ivanov
>>
>> [1] https://bugs.openjdk.java.net/browse/JDK-8217918
>> [2] https://bugs.openjdk.java.net/browse/JDK-8055340