[9] RFR (XS): 8150436: Incorrect invocation mode when linkToInteface linker is eliminated

[Vladimir Ivanov]

Uwe, I verified that your test case works fine after the fix.

Best regards,
Vladimir Ivanov

PS: thanks a lot for the minimized test case and detailed report! It 
saved me lots of time.

On 2/25/16 8:30 PM, Uwe Schindler wrote:
> Hi Vladimir,
>
> thanks for taking care so fast. To me the fix looks fine and this explains why we have seen that with Lucene! I hope my test case was fine, but it was quite clear under which circumstances this happened. As I am not able to build a full patched JDK on my own, but I hope you tried the fix with my test case (as attached to issue).
>
> Many, many thanks!
> Uwe
>
> -----
> Uwe Schindler
> uschindler at apache.org
> ASF Member, Apache Lucene PMC / Committer
> Bremen, Germany
> http://lucene.apache.org/
>
>> -----Original Message-----
>> From: hotspot-compiler-dev [mailto:hotspot-compiler-dev-
>> bounces at openjdk.java.net] On Behalf Of Vladimir Ivanov
>> Sent: Wednesday, February 24, 2016 5:14 PM
>> To: hotspot compiler <hotspot-compiler-dev at openjdk.java.net>
>> Subject: [9] RFR (XS): 8150436: Incorrect invocation mode when
>> linkToInteface linker is eliminated
>>
>> http://cr.openjdk.java.net/~vlivanov/8150436/webrev.00/
>> https://bugs.openjdk.java.net/browse/JDK-8150436
>>
>> When MH.linkToInterface is eliminated, but the target method is not
>> inlined, either default or concrete method is attached to the call site.
>> During call site resolution, invokeinterface invocation mode is used,
>> but resolution fails when the target method is concrete.
>>
>> The fix is to adjust invocation mode to invokevirtual when concrete
>> method is attached.
>>
>> Testing: failing test, JPRT.
>>
>> Thanks!
>>
>> Best regards,
>> Vladimir Ivanov
>