Looks good. Best regards, Vladimir Ivanov
On 9/28/16 2:48 PM, Claes Redestad wrote:
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
