1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 /** 26 * @test 27 * @bug 8081778 28 * @summary Add C2 x86 intrinsic for BigInteger::squareToLen() method 29 * 30 * @run main/othervm/timeout=600 -XX:-TieredCompilation -Xbatch 31 * -XX:CompileCommand=exclude,TestSquareToLen::main 32 * -XX:CompileCommand=option,TestSquareToLen::base_multiply,ccstr,DisableIntrinsic,_squareToLen 33 * -XX:CompileCommand=option,java.math.BigInteger::multiply,ccstr,DisableIntrinsic,_squareToLen 34 * -XX:CompileCommand=option,java.math.BigInteger::square,ccstr,DisableIntrinsic,_squareToLen 35 * -XX:CompileCommand=option,java.math.BigInteger::squareToLen,ccstr,DisableIntrinsic,_squareToLen 36 * -XX:CompileCommand=inline,java.math.BigInteger::multiply 37 * -XX:CompileCommand=inline,java.math.BigInteger::square 38 * -XX:CompileCommand=inline,java.math.BigInteger::squareToLen TestSquareToLen 39 */ 40 41 import java.util.Random; 42 import java.math.*; 43 44 public class TestSquareToLen { 45 46 // Avoid intrinsic by preventing inlining multiply() and squareToLen(). 47 public static BigInteger base_multiply(BigInteger op1) { 48 return op1.multiply(op1); 49 } 50 51 // Generate squareToLen() intrinsic by inlining multiply(). 52 public static BigInteger new_multiply(BigInteger op1) { 53 return op1.multiply(op1); 54 } 55 56 public static boolean bytecompare(BigInteger b1, BigInteger b2) { 57 byte[] data1 = b1.toByteArray(); 58 byte[] data2 = b2.toByteArray(); 59 if (data1.length != data2.length) 60 return false; 61 for (int i = 0; i < data1.length; i++) { 62 if (data1[i] != data2[i]) 63 return false; 64 } 65 return true; 66 } 67 68 public static String stringify(BigInteger b) { 69 String strout= ""; 70 byte [] data = b.toByteArray(); 71 for (int i = 0; i < data.length; i++) { 72 strout += (String.format("%02x",data[i]) + " "); 73 } 74 return strout; 75 } 76 77 public static void main(String args[]) throws Exception { 78 79 BigInteger oldsum = new BigInteger("0"); 80 BigInteger newsum = new BigInteger("0"); 81 82 BigInteger b1, b2, oldres, newres; 83 84 Random rand = new Random(); 85 long seed = System.nanoTime(); 86 Random rand1 = new Random(); 87 long seed1 = System.nanoTime(); 88 rand.setSeed(seed); 89 rand1.setSeed(seed1); 90 91 for (int j = 0; j < 100000; j++) { 92 int rand_int = rand1.nextInt(3136)+32; 93 b1 = new BigInteger(rand_int, rand); 94 95 oldres = base_multiply(b1); 96 newres = new_multiply(b1); 97 98 oldsum = oldsum.add(oldres); 99 newsum = newsum.add(newres); 100 101 if (!bytecompare(oldres,newres)) { 102 System.out.print("mismatch for:b1:" + stringify(b1) + " :oldres:" + stringify(oldres) + " :newres:" + stringify(newres)); 103 System.out.println(b1); 104 throw new Exception("Failed"); 105 } 106 } 107 if (!bytecompare(oldsum,newsum)) { 108 System.out.println("Failure: oldsum:" + stringify(oldsum) + " newsum:" + stringify(newsum)); 109 throw new Exception("Failed"); 110 } else { 111 System.out.println("Success"); 112 } 113 } 114 }