1 /* 2 * Copyright (c) 2015, 2020, 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 * @key randomness 27 * @bug 8081778 28 * @summary Add C2 x86 intrinsic for BigInteger::mulAdd() method 29 * @comment the test disables intrinsics, so it can't be run w/ AOT'ed java.base 30 * @requires !vm.aot.enabled 31 * 32 * @library /test/lib 33 * @run main/othervm/timeout=600 -XX:-TieredCompilation -Xbatch 34 * -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:-UseSquareToLenIntrinsic -XX:-UseMultiplyToLenIntrinsic 35 * -XX:CompileCommand=dontinline,compiler.intrinsics.bigInteger.TestMulAdd::main 36 * -XX:CompileCommand=option,compiler.intrinsics.bigInteger.TestMulAdd::base_multiply,ccstr,DisableIntrinsic,_mulAdd 37 * -XX:CompileCommand=option,java.math.BigInteger::multiply,ccstr,DisableIntrinsic,_mulAdd 38 * -XX:CompileCommand=option,java.math.BigInteger::square,ccstr,DisableIntrinsic,_mulAdd 39 * -XX:CompileCommand=option,java.math.BigInteger::squareToLen,ccstr,DisableIntrinsic,_mulAdd 40 * -XX:CompileCommand=option,java.math.BigInteger::mulAdd,ccstr,DisableIntrinsic,_mulAdd 41 * -XX:CompileCommand=inline,java.math.BigInteger::multiply 42 * -XX:CompileCommand=inline,java.math.BigInteger::square 43 * -XX:CompileCommand=inline,java.math.BigInteger::squareToLen 44 * -XX:CompileCommand=inline,java.math.BigInteger::mulAdd 45 * compiler.intrinsics.bigInteger.TestMulAdd 46 */ 47 48 package compiler.intrinsics.bigInteger; 49 50 import java.math.BigInteger; 51 import java.util.Random; 52 import jdk.test.lib.Utils; 53 54 public class TestMulAdd { 55 56 // Avoid intrinsic by preventing inlining multiply() and mulAdd(). base_multiply(BigInteger op1)57 public static BigInteger base_multiply(BigInteger op1) { 58 return op1.multiply(op1); 59 } 60 61 // Generate mulAdd() intrinsic by inlining multiply(). new_multiply(BigInteger op1)62 public static BigInteger new_multiply(BigInteger op1) { 63 return op1.multiply(op1); 64 } 65 bytecompare(BigInteger b1, BigInteger b2)66 public static boolean bytecompare(BigInteger b1, BigInteger b2) { 67 byte[] data1 = b1.toByteArray(); 68 byte[] data2 = b2.toByteArray(); 69 if (data1.length != data2.length) 70 return false; 71 for (int i = 0; i < data1.length; i++) { 72 if (data1[i] != data2[i]) 73 return false; 74 } 75 return true; 76 } 77 stringify(BigInteger b)78 public static String stringify(BigInteger b) { 79 String strout= ""; 80 byte [] data = b.toByteArray(); 81 for (int i = 0; i < data.length; i++) { 82 strout += (String.format("%02x",data[i]) + " "); 83 } 84 return strout; 85 } 86 main(String args[])87 public static void main(String args[]) throws Exception { 88 89 BigInteger oldsum = new BigInteger("0"); 90 BigInteger newsum = new BigInteger("0"); 91 92 BigInteger b1, b2, oldres, newres; 93 94 Random rand = new Random(Utils.getRandomInstance().nextLong()); 95 Random rand1 = new Random(Utils.getRandomInstance().nextLong()); 96 97 for (int j = 0; j < 100000; j++) { 98 int rand_int = rand1.nextInt(3136)+32; 99 b1 = new BigInteger(rand_int, rand); 100 101 oldres = base_multiply(b1); 102 newres = new_multiply(b1); 103 104 oldsum = oldsum.add(oldres); 105 newsum = newsum.add(newres); 106 107 if (!bytecompare(oldres,newres)) { 108 System.out.print("mismatch for:b1:" + stringify(b1) + " :oldres:" + stringify(oldres) + " :newres:" + stringify(newres)); 109 System.out.println(b1); 110 throw new Exception("Failed"); 111 } 112 } 113 if (!bytecompare(oldsum,newsum)) { 114 System.out.println("Failure: oldsum:" + stringify(oldsum) + " newsum:" + stringify(newsum)); 115 throw new Exception("Failed"); 116 } else { 117 System.out.println("Success"); 118 } 119 } 120 } 121