65 lines
2.5 KiB
Java
65 lines
2.5 KiB
Java
/*
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* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8330795
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* @summary Check that Reduce Allocation Merges doesn't crash when CompressedClassPointers
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* is disabled and there is an access to Klass "field" through the phi.
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* @requires vm.bits == 64 & vm.flagless & vm.compiler2.enabled & vm.opt.final.EliminateAllocations
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* @run main/othervm -XX:CompileCommand=dontinline,*TestReduceAllocationAndLoadKlass*::test
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* -XX:CompileCommand=compileonly,*TestReduceAllocationAndLoadKlass*::test
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* -XX:CompileCommand=compileonly,*Shape*::*init*
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* -XX:CompileCommand=compileonly,*Point*::*init*
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* -XX:CompileCommand=exclude,*TestReduceAllocationAndLoadKlass*::dummy
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* -XX:-TieredCompilation
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* -XX:-UseCompressedClassPointers
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* -Xbatch
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* -Xcomp
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* -server
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* compiler.c2.TestReduceAllocationAndLoadKlass
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*/
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package compiler.c2;
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public class TestReduceAllocationAndLoadKlass {
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public static void main(String[] args) {
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Point p = new Point();
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Line q = new Line();
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test(true);
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test(false);
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}
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static Class test(boolean cond) {
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Object p = cond ? dummy() : new Line();
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return p.getClass();
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}
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static Point dummy() { return new Point(); }
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static class Shape { }
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static class Point extends Shape { }
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static class Line extends Shape { }
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}
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