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1 /* |
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2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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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 8081778 |
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28 * @summary Add C2 x86 intrinsic for BigInteger::squareToLen() method |
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29 * |
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30 * @run main/othervm/timeout=600 -XX:-TieredCompilation -Xbatch |
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31 * -XX:CompileCommand=exclude,TestSquareToLen::main |
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32 * -XX:CompileCommand=option,TestSquareToLen::base_multiply,ccstr,DisableIntrinsic,_squareToLen |
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33 * -XX:CompileCommand=option,java.math.BigInteger::multiply,ccstr,DisableIntrinsic,_squareToLen |
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34 * -XX:CompileCommand=option,java.math.BigInteger::square,ccstr,DisableIntrinsic,_squareToLen |
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35 * -XX:CompileCommand=option,java.math.BigInteger::squareToLen,ccstr,DisableIntrinsic,_squareToLen |
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36 * -XX:CompileCommand=inline,java.math.BigInteger::multiply |
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37 * -XX:CompileCommand=inline,java.math.BigInteger::square |
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38 * -XX:CompileCommand=inline,java.math.BigInteger::squareToLen TestSquareToLen |
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39 */ |
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40 |
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41 import java.util.Random; |
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42 import java.math.*; |
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43 |
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44 public class TestSquareToLen { |
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45 |
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46 // Avoid intrinsic by preventing inlining multiply() and squareToLen(). |
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47 public static BigInteger base_multiply(BigInteger op1) { |
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48 return op1.multiply(op1); |
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49 } |
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50 |
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51 // Generate squareToLen() intrinsic by inlining multiply(). |
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52 public static BigInteger new_multiply(BigInteger op1) { |
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53 return op1.multiply(op1); |
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54 } |
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55 |
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56 public static boolean bytecompare(BigInteger b1, BigInteger b2) { |
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57 byte[] data1 = b1.toByteArray(); |
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58 byte[] data2 = b2.toByteArray(); |
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59 if (data1.length != data2.length) |
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60 return false; |
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61 for (int i = 0; i < data1.length; i++) { |
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62 if (data1[i] != data2[i]) |
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63 return false; |
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64 } |
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65 return true; |
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66 } |
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67 |
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68 public static String stringify(BigInteger b) { |
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69 String strout= ""; |
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70 byte [] data = b.toByteArray(); |
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71 for (int i = 0; i < data.length; i++) { |
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72 strout += (String.format("%02x",data[i]) + " "); |
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73 } |
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74 return strout; |
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75 } |
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76 |
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77 public static void main(String args[]) throws Exception { |
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78 |
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79 BigInteger oldsum = new BigInteger("0"); |
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80 BigInteger newsum = new BigInteger("0"); |
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81 |
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82 BigInteger b1, b2, oldres, newres; |
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83 |
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84 Random rand = new Random(); |
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85 long seed = System.nanoTime(); |
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86 Random rand1 = new Random(); |
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87 long seed1 = System.nanoTime(); |
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88 rand.setSeed(seed); |
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89 rand1.setSeed(seed1); |
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90 |
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91 for (int j = 0; j < 100000; j++) { |
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92 int rand_int = rand1.nextInt(3136)+32; |
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93 b1 = new BigInteger(rand_int, rand); |
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94 |
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95 oldres = base_multiply(b1); |
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96 newres = new_multiply(b1); |
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97 |
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98 oldsum = oldsum.add(oldres); |
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99 newsum = newsum.add(newres); |
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100 |
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101 if (!bytecompare(oldres,newres)) { |
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102 System.out.print("mismatch for:b1:" + stringify(b1) + " :oldres:" + stringify(oldres) + " :newres:" + stringify(newres)); |
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103 System.out.println(b1); |
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104 throw new Exception("Failed"); |
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105 } |
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106 } |
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107 if (!bytecompare(oldsum,newsum)) { |
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108 System.out.println("Failure: oldsum:" + stringify(oldsum) + " newsum:" + stringify(newsum)); |
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109 throw new Exception("Failed"); |
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110 } else { |
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111 System.out.println("Success"); |
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112 } |
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113 } |
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114 } |