jdk-24/test/hotspot/gtest/opto/test_mathexact.cpp
Rickard Bäckman 9ba6ab25e4 8191915: JCK tests produce incorrect results with C2
Reviewed-by: thartmann, vlivanov, goetz
2018-01-18 19:21:11 +01:00

41 lines
1.7 KiB
C++

/*
* Copyright (c) 2018, 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
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*
* 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.
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#include "precompiled.hpp"
#include "opto/mulnode.hpp"
#include "opto/mathexactnode.hpp"
#include "unittest.hpp"
TEST_VM(opto, mathexact) {
ASSERT_FALSE(OverflowMulLNode::is_overflow(1, 1));
ASSERT_FALSE(OverflowMulLNode::is_overflow(1, min_jlong));
ASSERT_TRUE(OverflowMulLNode::is_overflow(-1, min_jlong));
ASSERT_FALSE(OverflowMulLNode::is_overflow(-1, max_jlong));
ASSERT_TRUE(OverflowMulLNode::is_overflow(max_jlong / 2 + 1, 2));
ASSERT_FALSE(OverflowMulLNode::is_overflow(min_jlong, 0));
ASSERT_FALSE(OverflowMulLNode::is_overflow(min_jlong + 1, -1));
ASSERT_TRUE(OverflowMulLNode::is_overflow(min_jlong + 1, 2));
}