1 | /* |
2 | * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 | * |
5 | * This code is free software; you can redistribute it and/or modify it |
6 | * under the terms of the GNU General Public License version 2 only, as |
7 | * published by the Free Software Foundation. |
8 | * |
9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
12 | * version 2 for more details (a copy is included in the LICENSE file that |
13 | * accompanied this code). |
14 | * |
15 | * You should have received a copy of the GNU General Public License version |
16 | * 2 along with this work; if not, write to the Free Software Foundation, |
17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
18 | * |
19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
20 | * or visit www.oracle.com if you need additional information or have any |
21 | * questions. |
22 | * |
23 | */ |
24 | |
25 | #include "precompiled.hpp" |
26 | #include "opto/mulnode.hpp" |
27 | #include "opto/mathexactnode.hpp" |
28 | #include "unittest.hpp" |
29 | |
30 | TEST_VM(opto, mathexact) { |
31 | ASSERT_FALSE(OverflowMulLNode::is_overflow(1, 1)); |
32 | ASSERT_FALSE(OverflowMulLNode::is_overflow(1, min_jlong)); |
33 | ASSERT_TRUE(OverflowMulLNode::is_overflow(-1, min_jlong)); |
34 | ASSERT_FALSE(OverflowMulLNode::is_overflow(-1, max_jlong)); |
35 | ASSERT_TRUE(OverflowMulLNode::is_overflow(max_jlong / 2 + 1, 2)); |
36 | ASSERT_FALSE(OverflowMulLNode::is_overflow(min_jlong, 0)); |
37 | ASSERT_FALSE(OverflowMulLNode::is_overflow(min_jlong + 1, -1)); |
38 | ASSERT_TRUE(OverflowMulLNode::is_overflow(min_jlong + 1, 2)); |
39 | } |
40 | |
41 | |