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 2005-2006 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 | * @test |
duke@1 | 26 | * @bug 6257443 6350124 6357979 |
duke@1 | 27 | * @summary compiler can produce a .class file in some source output modes |
duke@1 | 28 | * |
duke@1 | 29 | * @compile package-info.java |
duke@1 | 30 | * @run main/othervm T6257443 -yes foo/package-info.class |
duke@1 | 31 | * |
duke@1 | 32 | * @clean foo.package-info |
duke@1 | 33 | * |
duke@1 | 34 | * @compile -XD-printflat package-info.java |
duke@1 | 35 | * @run main/othervm T6257443 -no foo/package-info.class |
duke@1 | 36 | * |
duke@1 | 37 | * @compile -XD-stubs package-info.java |
duke@1 | 38 | * @run main/othervm T6257443 -no foo/package-info.class |
duke@1 | 39 | * |
duke@1 | 40 | * @compile -XD-printsource package-info.java |
duke@1 | 41 | * @run main/othervm T6257443 -no foo/package-info.class |
duke@1 | 42 | */ |
duke@1 | 43 | |
duke@1 | 44 | import java.net.URL; |
duke@1 | 45 | |
duke@1 | 46 | public class T6257443 |
duke@1 | 47 | { |
duke@1 | 48 | public static void main(String[] args) { |
duke@1 | 49 | if (args.length != 2) |
duke@1 | 50 | throw new Error("wrong number of args"); |
duke@1 | 51 | |
duke@1 | 52 | String state = args[0]; |
duke@1 | 53 | String file = args[1]; |
duke@1 | 54 | |
duke@1 | 55 | if (state.equals("-no")) { |
duke@1 | 56 | URL u = find(file); |
duke@1 | 57 | if (u != null) |
duke@1 | 58 | throw new Error("file " + file + " found unexpectedly"); |
duke@1 | 59 | } |
duke@1 | 60 | else if (state.equals("-yes")) { |
duke@1 | 61 | URL u = find(file); |
duke@1 | 62 | if (u == null) |
duke@1 | 63 | throw new Error("file " + file + " not found"); |
duke@1 | 64 | } |
duke@1 | 65 | else |
duke@1 | 66 | throw new Error("bad args"); |
duke@1 | 67 | } |
duke@1 | 68 | |
duke@1 | 69 | public static URL find(String path) { |
duke@1 | 70 | return T6257443.class.getClassLoader().getSystemResource(path); |
duke@1 | 71 | } |
duke@1 | 72 | } |