110 lines
3.7 KiB
Java
110 lines
3.7 KiB
Java
/*
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* Copyright (c) 2020, 2021, 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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* @key stress randomness
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* @bug 8235332 8248226
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* @summary Test cloning with more than 8 (=ArrayCopyLoadStoreMaxElem) fields with StressGCM
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* @library /
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* @requires vm.compiler2.enabled | vm.graal.enabled
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*
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* @run main/othervm -Xbatch
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* -XX:CompileCommand=dontinline,compiler.arraycopy.TestCloneAccessStressGCM::test
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* -XX:+UnlockDiagnosticVMOptions -XX:+StressGCM -XX:-ReduceInitialCardMarks
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* compiler.arraycopy.TestCloneAccessStressGCM
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* @run main/othervm -Xbatch
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* -XX:CompileCommand=dontinline,compiler.arraycopy.TestCloneAccessStressGCM::test
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* -XX:+UnlockDiagnosticVMOptions -XX:+StressGCM -XX:-ReduceInitialCardMarks
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* -XX:-ReduceBulkZeroing
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* compiler.arraycopy.TestCloneAccessStressGCM
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*/
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package compiler.arraycopy;
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public class TestCloneAccessStressGCM {
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static int test(E src) throws CloneNotSupportedException {
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// ArrayCopyNode for this clone is not inlined since there are more than 8 (=ArrayCopyLoadStoreMaxElem) fields
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E dest = (E)src.clone();
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// The ArrayCopyNode initialization for the clone is executed after the LoadI nodes for 'dest' due to a
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// memory input from the uninitialized new object instead of the ArrayCopyNode. As a result, uninitialized
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// memory is read for each field and added together.
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return dest.i1 + dest.i2 + dest.i3 + dest.i4 + dest.i5 +
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dest.i6 + dest.i7 + dest.i8 + dest.i9;
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}
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public static void main(String[] args) throws Exception {
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TestCloneAccessStressGCM test = new TestCloneAccessStressGCM();
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int result = 0;
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E e = new E();
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for (int i = 0; i < 20000; i++) {
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result = test(e);
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if (result != 36) {
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throw new RuntimeException("Return value not 36. Got: " + result + "; additional check: " + e.sum());
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}
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}
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if (result != 36) {
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throw new RuntimeException("Return value not 36. Got: " + result + "; additional check: " + e.sum());
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}
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}
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}
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class E implements Cloneable {
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/*
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* Need more than 8 (=ArrayCopyLoadStoreMaxElem) fields
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*/
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int i1;
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int i2;
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int i3;
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int i4;
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int i5;
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int i6;
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int i7;
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int i8;
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int i9;
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E() {
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i1 = 0;
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i2 = 1;
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i3 = 2;
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i4 = 3;
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i5 = 4;
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i6 = 5;
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i7 = 6;
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i8 = 7;
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i9 = 8;
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}
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public Object clone() throws CloneNotSupportedException {
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return super.clone();
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}
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public int sum() {
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return i1 + i2 + i3 + i4 + i5 + i6 + i7 + i8 + i9;
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}
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}
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