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1 /* |
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2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #include "precompiled.hpp" |
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26 #include "opto/mulnode.hpp" |
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27 #include "opto/mathexactnode.hpp" |
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28 #include "unittest.hpp" |
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29 |
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30 TEST_VM(opto, mathexact) { |
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31 ASSERT_FALSE(OverflowMulLNode::is_overflow(1, 1)); |
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32 ASSERT_FALSE(OverflowMulLNode::is_overflow(1, min_jlong)); |
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33 ASSERT_TRUE(OverflowMulLNode::is_overflow(-1, min_jlong)); |
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34 ASSERT_FALSE(OverflowMulLNode::is_overflow(-1, max_jlong)); |
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35 ASSERT_TRUE(OverflowMulLNode::is_overflow(max_jlong / 2 + 1, 2)); |
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36 ASSERT_FALSE(OverflowMulLNode::is_overflow(min_jlong, 0)); |
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37 ASSERT_FALSE(OverflowMulLNode::is_overflow(min_jlong + 1, -1)); |
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38 ASSERT_TRUE(OverflowMulLNode::is_overflow(min_jlong + 1, 2)); |
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39 } |
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40 |