RFR : 8043467 : JEP 233: Generate Run-Time Compiler Tests Automatically

[Volker Simonis]

Thanks for the additional information.

What about the bytecode-generation part - are you working on it?

Regards,
Volker


On Fri, Nov 27, 2015 at 2:25 AM, Igor Veresov <igor.veresov at oracle.com>
wrote:

>
> On Nov 26, 2015, at 9:35 AM, Volker Simonis <volker.simonis at gmail.com>
> wrote:
>
> Hi Tatiana,
>
> really a very impressive piece of work!
>
> Even more impressive how Igor an Vladimir could review this within a few
> hours (I always new you're wizards, guys :)
>
>
> That’s because I wrote the initial version of it ten years ago. Although
> it is substantially refactored and extended with some new functionality
> now, I have a feel of the context. :)
>
>
> But more seriously: the code doesn't seem to contain any documentation at
> all and only a very homeopathic amount of comments. Would it be possible to
> add at least some kind of high-level documentation? Otherwise I think it
> will be very to grasp what's going on and/or maintain/extend this library
> for people not already involved in the project.
>
>
> That wouldn’t hurt. There is this high-level description:
> http://cr.openjdk.java.net/~iveresov/SUN060582-505001.pdf
>
> It would also be interesting to know if there's any bug you've already
> found until now with these tests. If yes, which one and if no, why do you
> expect to find bugs in the future?
>
>
> There were a bunch of problems in C2 that it found back in the days.
>
> igor
>
>
> Finally, the JEP mentions the generation of tests with bytcode sequences
> not generated by Javac to stress the VM with legal but uncommon bytecode
> patterns. I think this is a very good idea, but at a first glance I
> couldn't see any bytcode generation (at least not with
> jdk.internal.org.objectweb.asm). Will this feature be implemented later?
>
> Thanks,
> Volker
>
>
> On Wed, Nov 25, 2015 at 12:42 AM, Tatiana Pivovarova <
> tatiana.pivovarova at oracle.com> wrote:
>
>> Hi!
>>
>> Could you please review the code changes for JEP 233: Generate Run-Time
>> Compiler Tests Automatically?
>>
>> The intent of this project is to develop a tool (JIT-tester) which
>> randomly generates syntactically and semantically correct code and verifies
>> that the results from interpreter is the same the results from compiler.
>> Please find more details in the JEP.
>>
>> JEP : https://bugs.openjdk.java.net/browse/JDK-8043467
>> webrev:
>> http://cr.openjdk.java.net/~iignatyev/tpivovarova/jep-233/webrev.00/
>>
>> Thanks,
>> Tatiana
>>
>
>
>
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