decoupling interpreter buffers from the JIT's value processing

Vladimir Ivanov vladimir.x.ivanov at oracle.com
Fri Jul 7 15:52:39 UTC 2017


> How do you determine if there are allocations or not? some specific hotspot flags?

Yes, diagnostic EA output and eyeballing generated code (w/ -XX:-UseTLAB):
   -XX:+PrintEliminateAllocations -XX:+PrintEscapeAnalysis

Best regards,
Vladimir Ivanov

>> On 7 Jul 2017, at 05:19, Vladimir Ivanov <vladimir.x.ivanov at oracle.com> wrote:
>>
>>> Here is a first shot:
>>> http://cr.openjdk.java.net/~roland/8183137/webrev.00/
>>> I don't see the allocations in your test anymore. Can you give it a try?
>>
>> Thanks, Roland! I confirm that there are no allocations left in the loop test I wrote (VectorTest::sumArrayL2). I'll experiment with other code shapes and let you know about the results.
>>
>> Best regards,
>> Vladimir Ivanov
> 


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