RFR: 8236179: C1 register allocation error with T_ADDRESS

[Doerr, Martin]

Hi Roman,

fix is in 11.0.7., 14 and 15, now.
Only backport to 8u is missing (I'm not working on 8u backports).

Best regards,
Martin


> -----Original Message-----
> From: Roman Kennke <rkennke at redhat.com>
> Sent: Freitag, 20. Dezember 2019 21:37
> To: Aditya Mandaleeka <adityam at microsoft.com>; Doerr, Martin
> <martin.doerr at sap.com>; Roland Westrelin <rwestrel at redhat.com>;
> hotspot compiler <hotspot-compiler-dev at openjdk.java.net>
> Cc: shenandoah-dev <shenandoah-dev at openjdk.java.net>
> Subject: Re: RFR: 8236179: C1 register allocation error with T_ADDRESS
> 
> Hi Aditya,
> 
> > Thanks again to everyone who helped get this change in! I am happy to
> help backport it as well if it can wait until January.
> 
> Thank *you* for figuring this out in the first place. This seems a
> rather serious bug for Shenandoah GC (and I'm still a bit surprised how
> we haven't seen it yet). I just realized we're also gonna need it in
> JDK14. I am not even quite sure what the process for this would be.
> We'll figure it out.
> 
> Thank you!
> 
> Roman
> 
> 
> > Thanks,
> > Aditya
> >
> > -----Original Message-----
> > From: Roman Kennke <rkennke at redhat.com>
> > Sent: Friday, December 20, 2019 11:59 AM
> > To: Doerr, Martin <martin.doerr at sap.com>; Roland Westrelin
> <rwestrel at redhat.com>; Aditya Mandaleeka <adityam at microsoft.com>;
> hotspot compiler <hotspot-compiler-dev at openjdk.java.net>
> > Cc: shenandoah-dev <shenandoah-dev at openjdk.java.net>
> > Subject: Re: RFR: 8236179: C1 register allocation error with T_ADDRESS
> >
> > Hi Martin,
> >
> >> thanks for reviewing it. Pushed to jdk/jdk.
> >
> > Thanks a lot!
> >
> >> I guess we'll have to backport it after some testing time.
> >
> > Yes, we're gonna need it in 11u and 8u.
> >
> > Thanks and have a nice weekend (and xmas, etc, if you're also taking time
> off)!
> >
> > Cheers,
> > Roman
> >
> >> Best regards,
> >> Martin
> >>
> >>
> >>> -----Original Message-----
> >>> From: Roland Westrelin <rwestrel at redhat.com>
> >>> Sent: Freitag, 20. Dezember 2019 16:59
> >>> To: Doerr, Martin <martin.doerr at sap.com>; Aditya Mandaleeka
> >>> <adityam at microsoft.com>; hotspot compiler <hotspot-compiler-
> >>> dev at openjdk.java.net>
> >>> Cc: shenandoah-dev <shenandoah-dev at openjdk.java.net>
> >>> Subject: RE: RFR: 8236179: C1 register allocation error with
> >>> T_ADDRESS
> >>>
> >>>
> >>>>
> http://cr.openjdk.java.net/~mdoerr/8236179_C1_T_ADDRESS/webrev.02/
> >>>
> >>> That looks good to me.
> >>>
> >>> Roland.
> >>
> >