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8290529: C2: assert(BoolTest(btest).is_canonical()) failure #9553
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fix
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Merge branch 'master' into JDK-8290529
rwestrel f8656e4
IR test
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make CmpUWithZero test x64 only
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46 changes: 46 additions & 0 deletions
46
test/hotspot/jtreg/compiler/c2/TestUnsignedCompareIntoEqualityNotCanonical.java
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/* | ||
* Copyright (c) 2022, 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 8290529 | ||
* @summary C2: assert(BoolTest(btest).is_canonical()) failure | ||
* @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:-TieredCompilation TestUnsignedCompareIntoEqualityNotCanonical | ||
*/ | ||
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public class TestUnsignedCompareIntoEqualityNotCanonical { | ||
public static void main(String[] args) { | ||
for (int i = 0; i < 20_000; i++) { | ||
test(0); | ||
test(1); | ||
} | ||
} | ||
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private static int test(int x) { | ||
if (Integer.compareUnsigned(0, x) >= 0) { | ||
return 42; | ||
} | ||
return -42; | ||
} | ||
} |
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Update comment.
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What about updating this comment.
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Right. Sorry I forgot about that one. I updated the comment.