[12] RFR(S) 8206963: [AOT] bug with multiple class loaders

[Vladimir Kozlov]

Thank you

Vladimir

On 10/5/18 12:43 PM, Igor Veresov wrote:
> Looks good.
> 
> igor
> 
> 
> 
>> On Oct 5, 2018, at 7:36 AM, Vladimir Kozlov <vladimir.kozlov at oracle.com <mailto:vladimir.kozlov at oracle.com>> wrote:
>>
>> http://cr.openjdk.java.net/~kvn/8206963/webrev.01/ <http://cr.openjdk.java.net/%7Ekvn/8206963/webrev.01/>
>> https://bugs.openjdk.java.net/browse/JDK-8206963
>>
>> After investigations and discussions I suggest that AOT should not support custom class loaders. The main issue is 
>> during AOT compilation we don't know anything about them and their constrains. JAOTC uses only standard builtin loaders.
>> Otherwise we would have to add class runtime checks to all field accesses and inlined code and create separate memory 
>> for class pointers (AOT 'got' cells) per method which may cause significant performance regression.
>>
>> I will update limitations in AOT JEP.
>>
>> Changes passed tier1-3 and Xcomp testing.
>>
>> -- 
>> Thanks,
>> Vladimir
>