author | pli |
Wed, 30 Oct 2019 09:17:36 +0800 | |
changeset 58852 | 674131501e98 |
permissions | -rw-r--r-- |
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/* |
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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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} |