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8292660: C2: blocks made unreachable by NeverBranch-to-Goto conversio…
…n are removed incorrectly Backport-of: 730ced9a109953ca1c3b7bfd6a3eeac5b85892c5
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test/hotspot/jtreg/compiler/loopopts/TestMultipleInfiniteLoops.java
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/* | ||
* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved. | ||
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
* | ||
* This code is free software; you can redistribute it and/or modify it | ||
* under the terms of the GNU General Public License version 2 only, as | ||
* published by the Free Software Foundation. | ||
* | ||
* This code is distributed in the hope that it will be useful, but WITHOUT | ||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
* version 2 for more details (a copy is included in the LICENSE file that | ||
* accompanied this code). | ||
* | ||
* You should have received a copy of the GNU General Public License version | ||
* 2 along with this work; if not, write to the Free Software Foundation, | ||
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
* | ||
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
* or visit www.oracle.com if you need additional information or have any | ||
* questions. | ||
*/ | ||
|
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/** | ||
* @test | ||
* @bug 8292660 | ||
* @summary Test that blocks made unreachable after processing multiple infinite | ||
* loops in the block ordering phase are removed correctly. | ||
* | ||
* @run main/othervm -Xcomp -XX:CompileOnly=compiler.loopopts.TestMultipleInfiniteLoops::test | ||
* compiler.loopopts.TestMultipleInfiniteLoops | ||
*/ | ||
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package compiler.loopopts; | ||
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public class TestMultipleInfiniteLoops { | ||
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static int foo; | ||
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static void test() { | ||
int i = 5, j; | ||
while (i > 0) { | ||
for (j = i; 1 > j; ) { | ||
switch (i) { | ||
case 4: | ||
foo = j; | ||
} | ||
} | ||
i++; | ||
} | ||
} | ||
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public static void main(String[] args) { | ||
test(); | ||
} | ||
} |
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