103 lines
3.9 KiB
Java
103 lines
3.9 KiB
Java
/*
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2019, Arm Limited. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8232591
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* @summary Test some cases of combined signed multiply long operation
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* @library /test/lib
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* @run main/othervm -XX:+UnlockDiagnosticVMOptions
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* -Xcomp -XX:-TieredCompilation -XX:-Inline
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* compiler.codegen.TestSignedMultiplyLong
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*/
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package compiler.codegen;
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import jdk.test.lib.Asserts;
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public class TestSignedMultiplyLong {
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private static final int minInt = Integer.MIN_VALUE; // -2147483648
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private static final int maxInt = Integer.MAX_VALUE; // 2147483647
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private static final long minLong = Long.MIN_VALUE; // -9223372036854775808
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private static final long maxLong = Long.MAX_VALUE; // 9223372036854775807
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private static Case[] testCases = {
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// case: a b c resSmaddl resSmsubl resSmnegl
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new Case( 1000, -200, 500000L, 300000L, 700000L, 200000L),
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new Case(maxInt, 1, 1L, (long)maxInt + 1L, (long)minInt + 2L, (long)minInt + 1L),
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new Case(minInt, -1, 1L, (long)maxInt + 2L, (long)minInt + 1L, (long)minInt),
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new Case( -10, minInt, 1L, 21474836481L, -21474836479L, -21474836480L),
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new Case( 1, 1, maxLong, minLong, maxLong - 1L, -1L),
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new Case( 1, -1, minLong, maxLong, minLong + 1L, 1L),
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new Case( -1, -1, 0xffffffffeL << 32, 0xfffffffe00000001L, 0xfffffffdffffffffL, -1L)
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};
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private static class Case {
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private int a;
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private int b;
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private long c;
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private long resSmaddl;
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private long resSmsubl;
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private long resSmnegl;
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public Case(int a, int b, long c, long resSmaddl, long resSmsubl, long resSmnegl) {
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this.a = a;
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this.b = b;
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this.c = c;
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this.resSmaddl = resSmaddl;
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this.resSmsubl = resSmsubl;
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this.resSmnegl = resSmnegl;
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}
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public void verify() {
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Asserts.assertEQ(smaddl(a, b, c), resSmaddl,
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"Unexpected result from signed multiply-add long.");
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Asserts.assertEQ(smsubl(a, b, c), resSmsubl,
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"Unexpected result from signed multiply-sub long.");
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Asserts.assertEQ(smnegl(a, b), resSmnegl,
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"Unexpected result from signed multiply-neg long.");
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}
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}
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private static long smaddl(int a, int b, long c) {
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return c + a * (long) b;
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}
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private static long smsubl(int a, int b, long c) {
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return c - a * (long) b;
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}
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private static long smnegl(int a, int b) {
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return a * (-(long) b);
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}
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public static void main(String[] args) {
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for (Case c : testCases) {
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c.verify();
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}
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}
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}
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