hotspot/test/compiler/loopopts/TestCastIINoLoopLimitCheck.java
author roland
Tue, 24 Feb 2015 15:23:05 +0100
changeset 29344 49ad0989c84f
child 34254 f2743650be1f
permissions -rw-r--r--
8073184: Compile of java.lang.Integer::getChars fails with LoopLimitCheck = false after 8054478 Summary: CastII that guards counted loops confuses range check elimination with LoopLimitCheck off Reviewed-by: kvn, iveresov
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/*
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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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/**
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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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 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-LoopLimitCheck -XX:CompileOnly=TestCastIINoLoopLimitCheck.m -Xcomp  TestCastIINoLoopLimitCheck
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 *
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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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}