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 * @test 26 * @bug 8081778 27 * @summary Add C2 x86 intrinsic for BigInteger::mulAdd() method 28 * 29 * @run main/othervm/timeout=600 -XX:-TieredCompilation -Xbatch 30 * -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:-UseSquareToLenIntrinsic -XX:-UseMultiplyToLenIntrinsic 31 * -XX:CompileCommand=dontinline,compiler.intrinsics.bigInteger.TestMulAdd::main 32 * -XX:CompileCommand=option,compiler.intrinsics.bigInteger.TestMulAdd::base_multiply,ccstr,DisableIntrinsic,_mulAdd 33 * -XX:CompileCommand=option,java.math.BigInteger::multiply,ccstr,DisableIntrinsic,_mulAdd 34 * -XX:CompileCommand=option,java.math.BigInteger::square,ccstr,DisableIntrinsic,_mulAdd 35 * -XX:CompileCommand=option,java.math.BigInteger::squareToLen,ccstr,DisableIntrinsic,_mulAdd 36 * -XX:CompileCommand=option,java.math.BigInteger::mulAdd,ccstr,DisableIntrinsic,_mulAdd 37 * -XX:CompileCommand=inline,java.math.BigInteger::multiply 38 * -XX:CompileCommand=inline,java.math.BigInteger::square 39 * -XX:CompileCommand=inline,java.math.BigInteger::squareToLen 40 * -XX:CompileCommand=inline,java.math.BigInteger::mulAdd 41 * compiler.intrinsics.bigInteger.TestMulAdd 42 */ 43 44 package compiler.intrinsics.bigInteger; 45 46 import java.math.BigInteger; 47 import java.util.Random; 48 49 public class TestMulAdd { 50 51 // Avoid intrinsic by preventing inlining multiply() and mulAdd(). 52 public static BigInteger base_multiply(BigInteger op1) { 53 return op1.multiply(op1); 54 } 55 56 // Generate mulAdd() intrinsic by inlining multiply(). 57 public static BigInteger new_multiply(BigInteger op1) { 58 return op1.multiply(op1); 59 } 60 61 public static boolean bytecompare(BigInteger b1, BigInteger b2) { 62 byte[] data1 = b1.toByteArray(); 63 byte[] data2 = b2.toByteArray(); 64 if (data1.length != data2.length) 65 return false; 66 for (int i = 0; i < data1.length; i++) { 67 if (data1[i] != data2[i]) 68 return false; 69 } 70 return true; 71 } 72 73 public static String stringify(BigInteger b) { 74 String strout= ""; 75 byte [] data = b.toByteArray(); 76 for (int i = 0; i < data.length; i++) { 77 strout += (String.format("%02x",data[i]) + " "); 78 } 79 return strout; 80 } 81 82 public static void main(String args[]) throws Exception { 83 84 BigInteger oldsum = new BigInteger("0"); 85 BigInteger newsum = new BigInteger("0"); 86 87 BigInteger b1, b2, oldres, newres; 88 89 Random rand = new Random(); 90 long seed = System.nanoTime(); 91 Random rand1 = new Random(); 92 long seed1 = System.nanoTime(); 93 rand.setSeed(seed); 94 rand1.setSeed(seed1); 95 96 for (int j = 0; j < 100000; j++) { 97 int rand_int = rand1.nextInt(3136)+32; 98 b1 = new BigInteger(rand_int, rand); 99 100 oldres = base_multiply(b1); 101 newres = new_multiply(b1); 102 103 oldsum = oldsum.add(oldres); 104 newsum = newsum.add(newres); 105 106 if (!bytecompare(oldres,newres)) { 107 System.out.print("mismatch for:b1:" + stringify(b1) + " :oldres:" + stringify(oldres) + " :newres:" + stringify(newres)); 108 System.out.println(b1); 109 throw new Exception("Failed"); 110 } 111 } 112 if (!bytecompare(oldsum,newsum)) { 113 System.out.println("Failure: oldsum:" + stringify(oldsum) + " newsum:" + stringify(newsum)); 114 throw new Exception("Failed"); 115 } else { 116 System.out.println("Success"); 117 } 118 } 119 }