58 lines
2.1 KiB
Java
58 lines
2.1 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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* @bug 8286638
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* @summary Dominator failure because ConvL2I node becomes TOP, kills data-flow, but range-check does not collapse
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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 -XX:+StressIGVN -Xcomp -XX:-TieredCompilation
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* -XX:CompileCommand=compileonly,compiler.rangechecks.TestRangeCheckCmpUUnderflow::*
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* -XX:RepeatCompilation=300
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* compiler.rangechecks.TestRangeCheckCmpUUnderflow
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*/
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package compiler.rangechecks;
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public class TestRangeCheckCmpUUnderflow {
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volatile int a;
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int b[];
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float c[];
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void e() {
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int g, f, i;
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for (g = 2;; g++) {
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for (i = g; i < 1; i++) {
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f = a;
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c[i - 1] -= b[i];
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}
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}
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}
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public static void main(String[] args) {
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try {
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TestRangeCheckCmpUUnderflow j = new TestRangeCheckCmpUUnderflow();
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j.e();
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} catch (Exception ex) {}
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}
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}
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