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8229450: C2 compilation fails with assert(found_sfpt) failed
Reviewed-by: roland, thartmann
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Xin Liu
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Sep 4, 2019
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test/hotspot/jtreg/compiler/loopstripmining/LoadDependsOnIfIdenticalToLoopExit.java
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/* | ||
* Copyright (c) 2019, Red Hat, Inc. 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. | ||
*/ | ||
|
||
/** | ||
* @test | ||
* @bug 8229450 | ||
* @summary shared an identical bool node with a strip-mined loop | ||
* | ||
* @run main/othervm -XX:-TieredCompilation -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:LoopMaxUnroll=0 -XX:CompileCommand=dontinline,LoadDependsOnIfIdenticalToLoopExit::not_inlined -XX:CompileCommand=compileonly,LoadDependsOnIfIdenticalToLoopExit::test1 LoadDependsOnIfIdenticalToLoopExit | ||
* | ||
*/ | ||
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public class LoadDependsOnIfIdenticalToLoopExit { | ||
public static void main(String[] args) { | ||
for (int i = 0; i < 20_000; i++) { | ||
test1(false, false); | ||
test1(true, true); | ||
} | ||
} | ||
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private static int test1(boolean flag1, boolean flag2) { | ||
int res = 1; | ||
int[] array = new int[10]; | ||
not_inlined(array); | ||
int i; | ||
for (i = 0; i < 2000; i++) { | ||
res *= i; | ||
} | ||
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if (flag1) { | ||
if (flag2) { | ||
res++; | ||
} | ||
} | ||
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if (i >= 2000) { | ||
res *= array[0]; | ||
} | ||
return res; | ||
} | ||
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private static void not_inlined(int[] array) { | ||
} | ||
} |