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1 /* |
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2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. |
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3 * Copyright (c) 2019, Arm Limited. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 */ |
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24 |
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25 /* |
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26 * @test |
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27 * @bug 8232591 |
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28 * @summary Test some cases of combined signed multiply long operation |
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29 * @library /test/lib |
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30 * @run main/othervm -XX:+UnlockDiagnosticVMOptions |
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31 * -Xcomp -XX:-TieredCompilation -XX:-Inline |
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32 * compiler.codegen.TestSignedMultiplyLong |
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33 */ |
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34 |
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35 package compiler.codegen; |
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36 |
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37 import jdk.test.lib.Asserts; |
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38 |
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39 public class TestSignedMultiplyLong { |
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40 |
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41 private static final int minInt = Integer.MIN_VALUE; // -2147483648 |
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42 private static final int maxInt = Integer.MAX_VALUE; // 2147483647 |
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43 private static final long minLong = Long.MIN_VALUE; // -9223372036854775808 |
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44 private static final long maxLong = Long.MAX_VALUE; // 9223372036854775807 |
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45 |
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46 private static Case[] testCases = { |
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47 // case: a b c resSmaddl resSmsubl resSmnegl |
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48 new Case( 1000, -200, 500000L, 300000L, 700000L, 200000L), |
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49 new Case(maxInt, 1, 1L, (long)maxInt + 1L, (long)minInt + 2L, (long)minInt + 1L), |
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50 new Case(minInt, -1, 1L, (long)maxInt + 2L, (long)minInt + 1L, (long)minInt), |
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51 new Case( -10, minInt, 1L, 21474836481L, -21474836479L, -21474836480L), |
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52 new Case( 1, 1, maxLong, minLong, maxLong - 1L, -1L), |
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53 new Case( 1, -1, minLong, maxLong, minLong + 1L, 1L), |
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54 new Case( -1, -1, 0xffffffffeL << 32, 0xfffffffe00000001L, 0xfffffffdffffffffL, -1L) |
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55 }; |
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56 |
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57 private static class Case { |
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58 |
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59 private int a; |
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60 private int b; |
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61 private long c; |
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62 private long resSmaddl; |
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63 private long resSmsubl; |
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64 private long resSmnegl; |
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65 |
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66 public Case(int a, int b, long c, long resSmaddl, long resSmsubl, long resSmnegl) { |
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67 this.a = a; |
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68 this.b = b; |
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69 this.c = c; |
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70 this.resSmaddl = resSmaddl; |
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71 this.resSmsubl = resSmsubl; |
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72 this.resSmnegl = resSmnegl; |
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73 } |
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74 |
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75 public void verify() { |
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76 Asserts.assertEQ(smaddl(a, b, c), resSmaddl, |
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77 "Unexpected result from signed multiply-add long."); |
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78 Asserts.assertEQ(smsubl(a, b, c), resSmsubl, |
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79 "Unexpected result from signed multiply-sub long."); |
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80 Asserts.assertEQ(smnegl(a, b), resSmnegl, |
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81 "Unexpected result from signed multiply-neg long."); |
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82 } |
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83 } |
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84 |
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85 private static long smaddl(int a, int b, long c) { |
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86 return c + a * (long) b; |
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87 } |
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88 |
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89 private static long smsubl(int a, int b, long c) { |
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90 return c - a * (long) b; |
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91 } |
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92 |
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93 private static long smnegl(int a, int b) { |
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94 return a * (-(long) b); |
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95 } |
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96 |
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97 public static void main(String[] args) { |
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98 for (Case c : testCases) { |
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99 c.verify(); |
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100 } |
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101 } |
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102 } |