Thu, 30 Jul 2009 10:29:53 +0100
6827648: Extremely slow compilation time for visitor pattern code + generics
Summary: Javac unnecessarily recomputates type-substitutions multiple times
Reviewed-by: jjg
duke@1 | 1 | /* |
duke@1 | 2 | * Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved. |
duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@1 | 4 | * |
duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@1 | 7 | * published by the Free Software Foundation. |
duke@1 | 8 | * |
duke@1 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@1 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@1 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@1 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@1 | 13 | * accompanied this code). |
duke@1 | 14 | * |
duke@1 | 15 | * You should have received a copy of the GNU General Public License version |
duke@1 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@1 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@1 | 18 | * |
duke@1 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@1 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@1 | 21 | * have any questions. |
duke@1 | 22 | */ |
duke@1 | 23 | |
duke@1 | 24 | |
duke@1 | 25 | /* |
duke@1 | 26 | * Class with miscellaneous structures to exercise printing. |
duke@1 | 27 | */ |
duke@1 | 28 | |
duke@1 | 29 | import java.util.Collection; |
duke@1 | 30 | |
duke@1 | 31 | public final class Misc<T> implements Marker2, Marker3 { |
duke@1 | 32 | private static final long longConstant = Long.MAX_VALUE; |
duke@1 | 33 | |
duke@1 | 34 | private static final String asciispecials = "\t\n\u0007"; |
duke@1 | 35 | |
duke@1 | 36 | public void covar(Collection<? extends T> s) {return;} |
duke@1 | 37 | |
duke@1 | 38 | public void contravar(Collection<? super T> s) {return;} |
duke@1 | 39 | |
duke@1 | 40 | public <S> S varUse(int i) {return null;} |
duke@1 | 41 | |
duke@1 | 42 | Object o = (new Object() {}); // verify fix for 5019108 |
duke@1 | 43 | } |
duke@1 | 44 | |
duke@1 | 45 | interface Marker1 {} |
duke@1 | 46 | |
duke@1 | 47 | interface Marker2 extends Marker1 {} |
duke@1 | 48 | |
duke@1 | 49 | interface Marker3 {} |