58 lines
2.0 KiB
Java
58 lines
2.0 KiB
Java
/*
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* Copyright (c) 2015, 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 8073184
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* @summary CastII that guards counted loops confuses range check elimination with LoopLimitCheck off
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*
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* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -Xcomp
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* -XX:CompileCommand=compileonly,compiler.loopopts.TestCastIINoLoopLimitCheck::m
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* compiler.loopopts.TestCastIINoLoopLimitCheck
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*/
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package compiler.loopopts;
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/*
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* The test was originally run with
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*
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* -XX:+UnlockDiagnosticVMOptions -XX:-LoopLimitCheck
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*
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* to trigger a problem with code guarded with !LoopLimitCheck.
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* JDK-8072422 has removed that code but kept the test because the
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* test generates an interesting graph shape.
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*/
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public class TestCastIINoLoopLimitCheck {
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static void m(int i, int index, char[] buf) {
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while (i >= 65536) {
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i = i / 100;
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buf [--index] = 0;
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buf [--index] = 1;
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}
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}
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static public void main(String[] args) {
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m(0, 0, null);
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}
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}
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