1 /*
2 * Copyright (c) 2015, 2019, 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 * @comment the test disables intrinsics, so can't be run w/ AOT'ed java.base
29 * @requires !(vm.aot.modules ~= " java\\.base ")
30 *
31 * @run main/othervm/timeout=600 -XX:-TieredCompilation -Xbatch
32 * -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:-UseSquareToLenIntrinsic -XX:-UseMultiplyToLenIntrinsic
33 * -XX:CompileCommand=dontinline,compiler.intrinsics.bigInteger.TestMulAdd::main
34 * -XX:CompileCommand=option,compiler.intrinsics.bigInteger.TestMulAdd::base_multiply,ccstr,DisableIntrinsic,_mulAdd
35 * -XX:CompileCommand=option,java.math.BigInteger::multiply,ccstr,DisableIntrinsic,_mulAdd
36 * -XX:CompileCommand=option,java.math.BigInteger::square,ccstr,DisableIntrinsic,_mulAdd
37 * -XX:CompileCommand=option,java.math.BigInteger::squareToLen,ccstr,DisableIntrinsic,_mulAdd
38 * -XX:CompileCommand=option,java.math.BigInteger::mulAdd,ccstr,DisableIntrinsic,_mulAdd
39 * -XX:CompileCommand=inline,java.math.BigInteger::multiply
40 * -XX:CompileCommand=inline,java.math.BigInteger::square
41 * -XX:CompileCommand=inline,java.math.BigInteger::squareToLen
42 * -XX:CompileCommand=inline,java.math.BigInteger::mulAdd
43 * compiler.intrinsics.bigInteger.TestMulAdd
44 */
45
46 package compiler.intrinsics.bigInteger;
47
48 import java.math.BigInteger;
49 import java.util.Random;
50
51 public class TestMulAdd {
52
53 // Avoid intrinsic by preventing inlining multiply() and mulAdd().
54 public static BigInteger base_multiply(BigInteger op1) {
55 return op1.multiply(op1);
56 }
57
58 // Generate mulAdd() intrinsic by inlining multiply().
59 public static BigInteger new_multiply(BigInteger op1) {
60 return op1.multiply(op1);
61 }
62
63 public static boolean bytecompare(BigInteger b1, BigInteger b2) {
64 byte[] data1 = b1.toByteArray();
65 byte[] data2 = b2.toByteArray();
66 if (data1.length != data2.length)
67 return false;
68 for (int i = 0; i < data1.length; i++) {
69 if (data1[i] != data2[i])
70 return false;
71 }
72 return true;
73 }
74
75 public static String stringify(BigInteger b) {
76 String strout= "";
77 byte [] data = b.toByteArray();
78 for (int i = 0; i < data.length; i++) {
79 strout += (String.format("%02x",data[i]) + " ");
80 }
81 return strout;
82 }
83
84 public static void main(String args[]) throws Exception {
85
86 BigInteger oldsum = new BigInteger("0");
87 BigInteger newsum = new BigInteger("0");
88
89 BigInteger b1, b2, oldres, newres;
90
91 Random rand = new Random();
92 long seed = System.nanoTime();
93 Random rand1 = new Random();
94 long seed1 = System.nanoTime();
95 rand.setSeed(seed);
96 rand1.setSeed(seed1);
97
98 for (int j = 0; j < 100000; j++) {
99 int rand_int = rand1.nextInt(3136)+32;
100 b1 = new BigInteger(rand_int, rand);
101
102 oldres = base_multiply(b1);
103 newres = new_multiply(b1);
104
105 oldsum = oldsum.add(oldres);
106 newsum = newsum.add(newres);
107
108 if (!bytecompare(oldres,newres)) {
109 System.out.print("mismatch for:b1:" + stringify(b1) + " :oldres:" + stringify(oldres) + " :newres:" + stringify(newres));
110 System.out.println(b1);
111 throw new Exception("Failed");
112 }
113 }
114 if (!bytecompare(oldsum,newsum)) {
115 System.out.println("Failure: oldsum:" + stringify(oldsum) + " newsum:" + stringify(newsum));
116 throw new Exception("Failed");
117 } else {
118 System.out.println("Success");
119 }
120 }
121 }