63 lines
2.2 KiB
Java
63 lines
2.2 KiB
Java
/*
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* Copyright (c) 2023, 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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/*
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* @test
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* @bug 8314233
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* @requires vm.compiler2.enabled
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* @summary Test that loop peeling does not treat unrelated Opaque4 node as Template Assertion Predicate.
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* @run main/othervm -Xbatch -XX:LoopMaxUnroll=0
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* -XX:CompileCommand=compileonly,compiler.predicates.TestPeelingFindsUnrelatedOpaque4Node::*
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* -XX:CompileCommand=inline,*String::* compiler.predicates.TestPeelingFindsUnrelatedOpaque4Node
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*/
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package compiler.predicates;
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public class TestPeelingFindsUnrelatedOpaque4Node {
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static int iFld;
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static boolean flag;
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public static void main(String[] args) {
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for (int i = 0; i < 1000; i++) {
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test();
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flag = !flag;
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}
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}
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static void test() {
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String s = flag ? "34323653" : "343423";
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s.contains("343");
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// Inlined and will call StringLatin1.indexOf intrinsics which emits Opaque4 node which will be wrongly
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// found as Template Assertion Predicate when trying to initialize them which triggers the assert.
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s.contains("3442");
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for (int i = 0; i < 100; i++) {
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if (flag) { // Triggers peeling
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return;
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}
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iFld = 34;
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}
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}
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}
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