jdk8-mips64-public/hotspot: test/compiler/intrinsics/squaretolen/TestSquareToLen.java@daaf806995b3 (annotated)

test/compiler/intrinsics/squaretolen/TestSquareToLen.java@daaf806995b3 (annotated)

test/compiler/intrinsics/squaretolen/TestSquareToLen.java

Wed, 17 Feb 2016 13:40:12 +0300

author: igerasim
date: Wed, 17 Feb 2016 13:40:12 +0300
changeset 8307: daaf806995b3
child 8319: 0cd040567d60
permissions: -rw-r--r--

8081778: Use Intel x64 CPU instructions for RSA acceleration
Summary: Add intrinsics for BigInteger squareToLen and mulAdd methods.
Reviewed-by: kvn, jrose

 /*
  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 /**
  * @test
  * @bug 8081778
  * @summary Add C2 x86 intrinsic for BigInteger::squareToLen() method
  *
  * @run main/othervm/timeout=600 -XX:-TieredCompilation -Xbatch
  *      -XX:CompileCommand=exclude,TestSquareToLen::main
  *      -XX:CompileCommand=option,TestSquareToLen::base_multiply,ccstr,DisableIntrinsic,_squareToLen
  *      -XX:CompileCommand=option,java.math.BigInteger::multiply,ccstr,DisableIntrinsic,_squareToLen
  *      -XX:CompileCommand=option,java.math.BigInteger::square,ccstr,DisableIntrinsic,_squareToLen
  *      -XX:CompileCommand=option,java.math.BigInteger::squareToLen,ccstr,DisableIntrinsic,_squareToLen
  *      -XX:CompileCommand=inline,java.math.BigInteger::multiply
  *      -XX:CompileCommand=inline,java.math.BigInteger::square
  *      -XX:CompileCommand=inline,java.math.BigInteger::squareToLen TestSquareToLen
  */
 import java.util.Random;
 import java.math.*;
 public class TestSquareToLen {
     // Avoid intrinsic by preventing inlining multiply() and squareToLen().
     public static BigInteger base_multiply(BigInteger op1) {
       return op1.multiply(op1);
     }
     // Generate squareToLen() intrinsic by inlining multiply().
     public static BigInteger new_multiply(BigInteger op1) {
       return op1.multiply(op1);
     }
     public static boolean bytecompare(BigInteger b1, BigInteger b2) {
       byte[] data1 = b1.toByteArray();
       byte[] data2 = b2.toByteArray();
       if (data1.length != data2.length)
         return false;
       for (int i = 0; i < data1.length; i++) {
         if (data1[i] != data2[i])
           return false;
       }
       return true;
     }
     public static String stringify(BigInteger b) {
       String strout= "";
       byte [] data = b.toByteArray();
       for (int i = 0; i < data.length; i++) {
         strout += (String.format("%02x",data[i]) + " ");
       }
       return strout;
     }
     public static void main(String args[]) throws Exception {
       BigInteger oldsum = new BigInteger("0");
       BigInteger newsum = new BigInteger("0");
       BigInteger b1, b2, oldres, newres;
       Random rand = new Random();
       long seed = System.nanoTime();
       Random rand1 = new Random();
       long seed1 = System.nanoTime();
       rand.setSeed(seed);
       rand1.setSeed(seed1);
       for (int j = 0; j < 100000; j++) {
         int rand_int = rand1.nextInt(3136)+32;
         b1 = new BigInteger(rand_int, rand);
         oldres = base_multiply(b1);
         newres = new_multiply(b1);
         oldsum = oldsum.add(oldres);
         newsum = newsum.add(newres);
         if (!bytecompare(oldres,newres)) {
           System.out.print("mismatch for:b1:" + stringify(b1) + " :oldres:" + stringify(oldres) + " :newres:" + stringify(newres));
           System.out.println(b1);
           throw new Exception("Failed");
         }
       }
       if (!bytecompare(oldsum,newsum))  {
         System.out.println("Failure: oldsum:" + stringify(oldsum) + " newsum:" + stringify(newsum));
         throw new Exception("Failed");
       } else {
         System.out.println("Success");
       }
    }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/compiler/intrinsics/squaretolen/TestSquareToLen.java@daaf806995b3 (annotated)

test/compiler/intrinsics/squaretolen/TestSquareToLen.java