78 lines
2.9 KiB
Java
78 lines
2.9 KiB
Java
/*
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* Copyright (c) 2022, 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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* @requires vm.compiler2.enabled
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* @bug 8286638
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* @summary Dominator failure because CastII node becomes TOP while skeleton predicate cannot be folded
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* due to insufficient overflow/underflow handling in CmpUNode::Value.
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*
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* @run main/othervm -XX:+UnlockDiagnosticVMOptions -Xbatch -XX:-UseLoopPredicate -XX:+StressIGVN -XX:StressSeed=680585904
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* -XX:CompileCommand=compileonly,compiler.rangechecks.TestRangeCheckCmpUOverflow::test
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* -XX:CompileCommand=inline,compiler.rangechecks.TestRangeCheckCmpUOverflow::inlined
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* -XX:-DoEscapeAnalysis compiler.rangechecks.TestRangeCheckCmpUOverflow
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* @run main/othervm -XX:+UnlockDiagnosticVMOptions -Xbatch -XX:-UseLoopPredicate -XX:+StressIGVN
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* -XX:CompileCommand=compileonly,compiler.rangechecks.TestRangeCheckCmpUOverflow::test
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* -XX:CompileCommand=inline,compiler.rangechecks.TestRangeCheckCmpUOverflow::inlined
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* -XX:-DoEscapeAnalysis compiler.rangechecks.TestRangeCheckCmpUOverflow
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*/
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package compiler.rangechecks;
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public class TestRangeCheckCmpUOverflow {
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static volatile int barrier;
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public static void main(String[] args) {
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for (int i = 0; i < 10000; i++) {
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run();
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}
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}
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static void run() {
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double[] array = new double[1000];
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inlined(1000, array);
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test(11);
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}
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static void inlined(int stop, double[] array1) {
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for (int i = 8; i < stop; i++) {
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if ((i % 2) == 0) {
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array1[i] = 42.42;
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} else {
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barrier = 0x42;
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}
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}
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}
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static void test(int stop) {
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double[] array1 = new double[10];
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for (int j = 0; j < stop; j++) {
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inlined(j, array1);
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}
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}
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}
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