jdk8-mips64-public/hotspot: test/compiler/intrinsics/muladd/TestMulAdd.java@0cd040567d60

     1 /*

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     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

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    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

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    25 /**

    26  * @test

    27  * @bug 8081778

    28  * @summary Add C2 x86 intrinsic for BigInteger::mulAdd() method

    29  *

    30  * @run main/othervm/timeout=600 -XX:-TieredCompilation -Xbatch

    31  *      -XX:+IgnoreUnrecognizedVMOptions -XX:-UseSquareToLenIntrinsic -XX:-UseMultiplyToLenIntrinsic

    32  *      -XX:+UseMulAddIntrinsic

    33  *      -XX:CompileCommand=dontinline,TestMulAdd::main

    34  *      -XX:CompileCommand=option,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 TestMulAdd

    43  */

    45 import java.util.Random;

    46 import java.math.*;

    48 public class TestMulAdd {

    50     // Avoid intrinsic by preventing inlining multiply() and mulAdd().

    51     public static BigInteger base_multiply(BigInteger op1) {

    52       return op1.multiply(op1);

    53     }

    55     // Generate mulAdd() intrinsic by inlining multiply().

    56     public static BigInteger new_multiply(BigInteger op1) {

    57       return op1.multiply(op1);

    58     }

    60     public static boolean bytecompare(BigInteger b1, BigInteger b2) {

    61       byte[] data1 = b1.toByteArray();

    62       byte[] data2 = b2.toByteArray();

    63       if (data1.length != data2.length)

    64         return false;

    65       for (int i = 0; i < data1.length; i++) {

    66         if (data1[i] != data2[i])

    67           return false;

    68       }

    69       return true;

    70     }

    72     public static String stringify(BigInteger b) {

    73       String strout= "";

    74       byte [] data = b.toByteArray();

    75       for (int i = 0; i < data.length; i++) {

    76         strout += (String.format("%02x",data[i]) + " ");

    77       }

    78       return strout;

    79     }

    81     public static void main(String args[]) throws Exception {

    83       BigInteger oldsum = new BigInteger("0");

    84       BigInteger newsum = new BigInteger("0");

    86       BigInteger b1, b2, oldres, newres;

    88       Random rand = new Random();

    89       long seed = System.nanoTime();

    90       Random rand1 = new Random();

    91       long seed1 = System.nanoTime();

    92       rand.setSeed(seed);

    93       rand1.setSeed(seed1);

    95       for (int j = 0; j < 100000; j++) {

    96         int rand_int = rand1.nextInt(3136)+32;

    97         b1 = new BigInteger(rand_int, rand);

    99         oldres = base_multiply(b1);

   100         newres = new_multiply(b1);

   102         oldsum = oldsum.add(oldres);

   103         newsum = newsum.add(newres);

   105         if (!bytecompare(oldres,newres)) {

   106           System.out.print("mismatch for:b1:" + stringify(b1) + " :oldres:" + stringify(oldres) + " :newres:" + stringify(newres));

   107           System.out.println(b1);

   108           throw new Exception("Failed");

   109         }

   110       }

   111       if (!bytecompare(oldsum,newsum))  {

   112         System.out.println("Failure: oldsum:" + stringify(oldsum) + " newsum:" + stringify(newsum));

   113         throw new Exception("Failed");

   114       } else {

   115         System.out.println("Success");

   116       }

   117    }

   118 }

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