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annotate test/compiler/intrinsics/squaretolen/TestSquareToLen.java @ 23888:dd8507f51d78 jdk8u77-b31

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8152098: Fix 8151522 caused test compiler/intrinsics/squaretolen/TestSquareToLen.java to fail Reviewed-by: kvn
author vkempik
date Fri, 18 Mar 2016 17:23:07 +0300
parents 4abc54f62213
children
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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:+IgnoreUnrecognizedVMOptions
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32 * -XX:+UseSquareToLenIntrinsic
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33 * -XX:CompileCommand=exclude,TestSquareToLen::main
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34 * -XX:CompileCommand=option,TestSquareToLen::base_multiply,ccstr,DisableIntrinsic,_squareToLen
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35 * -XX:CompileCommand=option,java.math.BigInteger::multiply,ccstr,DisableIntrinsic,_squareToLen
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36 * -XX:CompileCommand=option,java.math.BigInteger::square,ccstr,DisableIntrinsic,_squareToLen
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37 * -XX:CompileCommand=option,java.math.BigInteger::squareToLen,ccstr,DisableIntrinsic,_squareToLen
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38 * -XX:CompileCommand=inline,java.math.BigInteger::multiply
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39 * -XX:CompileCommand=inline,java.math.BigInteger::square
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40 * -XX:CompileCommand=inline,java.math.BigInteger::squareToLen TestSquareToLen
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41 */
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42
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43 import java.util.Random;
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44 import java.math.*;
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45
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46 public class TestSquareToLen {
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47
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48 // Avoid intrinsic by preventing inlining multiply() and squareToLen().
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49 public static BigInteger base_multiply(BigInteger op1) {
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50 return op1.multiply(op1);
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51 }
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52
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53 // Generate squareToLen() intrinsic by inlining multiply().
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54 public static BigInteger new_multiply(BigInteger op1) {
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55 return op1.multiply(op1);
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56 }
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57
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58 public static boolean bytecompare(BigInteger b1, BigInteger b2) {
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59 byte[] data1 = b1.toByteArray();
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60 byte[] data2 = b2.toByteArray();
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61 if (data1.length != data2.length)
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62 return false;
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63 for (int i = 0; i < data1.length; i++) {
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64 if (data1[i] != data2[i])
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65 return false;
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66 }
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67 return true;
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68 }
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69
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70 public static String stringify(BigInteger b) {
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71 String strout= "";
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72 byte [] data = b.toByteArray();
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73 for (int i = 0; i < data.length; i++) {
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74 strout += (String.format("%02x",data[i]) + " ");
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75 }
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76 return strout;
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77 }
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78
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79 public static void main(String args[]) throws Exception {
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80
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81 BigInteger oldsum = new BigInteger("0");
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82 BigInteger newsum = new BigInteger("0");
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83
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84 BigInteger b1, b2, oldres, newres;
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85
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86 Random rand = new Random();
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87 long seed = System.nanoTime();
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88 Random rand1 = new Random();
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89 long seed1 = System.nanoTime();
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90 rand.setSeed(seed);
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91 rand1.setSeed(seed1);
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92
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93 for (int j = 0; j < 100000; j++) {
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94 int rand_int = rand1.nextInt(3136)+32;
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95 b1 = new BigInteger(rand_int, rand);
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96
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97 oldres = base_multiply(b1);
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98 newres = new_multiply(b1);
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99
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100 oldsum = oldsum.add(oldres);
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101 newsum = newsum.add(newres);
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102
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103 if (!bytecompare(oldres,newres)) {
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104 System.out.print("mismatch for:b1:" + stringify(b1) + " :oldres:" + stringify(oldres) + " :newres:" + stringify(newres));
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105 System.out.println(b1);
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106 throw new Exception("Failed");
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107 }
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108 }
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109 if (!bytecompare(oldsum,newsum)) {
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110 System.out.println("Failure: oldsum:" + stringify(oldsum) + " newsum:" + stringify(newsum));
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111 throw new Exception("Failed");
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112 } else {
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113 System.out.println("Success");
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114 }
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115 }
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116 }