Hi Claes, yes please. Thumbs up. :-)
Best, Michael > Am 28.09.2016 um 13:48 schrieb Claes Redestad <claes.redes...@oracle.com>: > > Hi, > > as discussed recently on hotspot-compiler-dev[1], having a private class with > no default constructor can lead to C2 failing to inline, due to the synthetic > bridge constructor using a dummy argument of an uninitialized class. This is > really a problem in C2, as well as something which could ultimately be > resolved by nestmates... > > However, there is an easy workaround in adding an empty package-private > constructor. In the most recently found case - a microbenchmark stressing > MethodHandles.iteratedLoop - adding this to ArrayList$Itr lead to a 2.5-3x > speedup. > > This is me asking nicely to do a quick-fix for this in > java.util.ArrayList$Itr now: > > Bug: https://bugs.openjdk.java.net/browse/JDK-8166840 > Webrev: http://cr.openjdk.java.net/~redestad/8166840/webrev.01/ > > Thanks! > > /Claes > > [1] > http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2016-September/024407.html -- <http://www.oracle.com/> Dr. Michael Haupt | Principal Member of Technical Staff Phone: +49 331 200 7277 | Fax: +49 331 200 7561 Oracle Java Platform Group | LangTools Team | Nashorn Oracle Deutschland B.V. & Co. KG | Schiffbauergasse 14 | 14467 Potsdam, Germany ORACLE Deutschland B.V. & Co. KG | Hauptverwaltung: Riesstraße 25, D-80992 München Registergericht: Amtsgericht München, HRA 95603 Komplementärin: ORACLE Deutschland Verwaltung B.V. | Hertogswetering 163/167, 3543 AS Utrecht, Niederlande Handelsregister der Handelskammer Midden-Nederland, Nr. 30143697 Geschäftsführer: Alexander van der Ven, Jan Schultheiss, Val Maher <http://www.oracle.com/commitment> Oracle is committed to developing practices and products that help protect the environment
