igerasim@8307: /*
igerasim@8307:  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
igerasim@8307:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
igerasim@8307:  *
igerasim@8307:  * This code is free software; you can redistribute it and/or modify it
igerasim@8307:  * under the terms of the GNU General Public License version 2 only, as
igerasim@8307:  * published by the Free Software Foundation.
igerasim@8307:  *
igerasim@8307:  * This code is distributed in the hope that it will be useful, but WITHOUT
igerasim@8307:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
igerasim@8307:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
igerasim@8307:  * version 2 for more details (a copy is included in the LICENSE file that
igerasim@8307:  * accompanied this code).
igerasim@8307:  *
igerasim@8307:  * You should have received a copy of the GNU General Public License version
igerasim@8307:  * 2 along with this work; if not, write to the Free Software Foundation,
igerasim@8307:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
igerasim@8307:  *
igerasim@8307:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
igerasim@8307:  * or visit www.oracle.com if you need additional information or have any
igerasim@8307:  * questions.
igerasim@8307:  *
igerasim@8307:  */
igerasim@8307: 
igerasim@8307: /**
igerasim@8307:  * @test
igerasim@8307:  * @bug 8081778
igerasim@8307:  * @summary Add C2 x86 intrinsic for BigInteger::squareToLen() method
igerasim@8307:  *
igerasim@8307:  * @run main/othervm/timeout=600 -XX:-TieredCompilation -Xbatch
vkempik@8319:  *      -XX:+UseSquareToLenIntrinsic
igerasim@8307:  *      -XX:CompileCommand=exclude,TestSquareToLen::main
igerasim@8307:  *      -XX:CompileCommand=option,TestSquareToLen::base_multiply,ccstr,DisableIntrinsic,_squareToLen
igerasim@8307:  *      -XX:CompileCommand=option,java.math.BigInteger::multiply,ccstr,DisableIntrinsic,_squareToLen
igerasim@8307:  *      -XX:CompileCommand=option,java.math.BigInteger::square,ccstr,DisableIntrinsic,_squareToLen
igerasim@8307:  *      -XX:CompileCommand=option,java.math.BigInteger::squareToLen,ccstr,DisableIntrinsic,_squareToLen
igerasim@8307:  *      -XX:CompileCommand=inline,java.math.BigInteger::multiply
igerasim@8307:  *      -XX:CompileCommand=inline,java.math.BigInteger::square
igerasim@8307:  *      -XX:CompileCommand=inline,java.math.BigInteger::squareToLen TestSquareToLen
igerasim@8307:  */
igerasim@8307: 
igerasim@8307: import java.util.Random;
igerasim@8307: import java.math.*;
igerasim@8307: 
igerasim@8307: public class TestSquareToLen {
igerasim@8307: 
igerasim@8307:     // Avoid intrinsic by preventing inlining multiply() and squareToLen().
igerasim@8307:     public static BigInteger base_multiply(BigInteger op1) {
igerasim@8307:       return op1.multiply(op1);
igerasim@8307:     }
igerasim@8307: 
igerasim@8307:     // Generate squareToLen() intrinsic by inlining multiply().
igerasim@8307:     public static BigInteger new_multiply(BigInteger op1) {
igerasim@8307:       return op1.multiply(op1);
igerasim@8307:     }
igerasim@8307: 
igerasim@8307:     public static boolean bytecompare(BigInteger b1, BigInteger b2) {
igerasim@8307:       byte[] data1 = b1.toByteArray();
igerasim@8307:       byte[] data2 = b2.toByteArray();
igerasim@8307:       if (data1.length != data2.length)
igerasim@8307:         return false;
igerasim@8307:       for (int i = 0; i < data1.length; i++) {
igerasim@8307:         if (data1[i] != data2[i])
igerasim@8307:           return false;
igerasim@8307:       }
igerasim@8307:       return true;
igerasim@8307:     }
igerasim@8307: 
igerasim@8307:     public static String stringify(BigInteger b) {
igerasim@8307:       String strout= "";
igerasim@8307:       byte [] data = b.toByteArray();
igerasim@8307:       for (int i = 0; i < data.length; i++) {
igerasim@8307:         strout += (String.format("%02x",data[i]) + " ");
igerasim@8307:       }
igerasim@8307:       return strout;
igerasim@8307:     }
igerasim@8307: 
igerasim@8307:     public static void main(String args[]) throws Exception {
igerasim@8307: 
igerasim@8307:       BigInteger oldsum = new BigInteger("0");
igerasim@8307:       BigInteger newsum = new BigInteger("0");
igerasim@8307: 
igerasim@8307:       BigInteger b1, b2, oldres, newres;
igerasim@8307: 
igerasim@8307:       Random rand = new Random();
igerasim@8307:       long seed = System.nanoTime();
igerasim@8307:       Random rand1 = new Random();
igerasim@8307:       long seed1 = System.nanoTime();
igerasim@8307:       rand.setSeed(seed);
igerasim@8307:       rand1.setSeed(seed1);
igerasim@8307: 
igerasim@8307:       for (int j = 0; j < 100000; j++) {
igerasim@8307:         int rand_int = rand1.nextInt(3136)+32;
igerasim@8307:         b1 = new BigInteger(rand_int, rand);
igerasim@8307: 
igerasim@8307:         oldres = base_multiply(b1);
igerasim@8307:         newres = new_multiply(b1);
igerasim@8307: 
igerasim@8307:         oldsum = oldsum.add(oldres);
igerasim@8307:         newsum = newsum.add(newres);
igerasim@8307: 
igerasim@8307:         if (!bytecompare(oldres,newres)) {
igerasim@8307:           System.out.print("mismatch for:b1:" + stringify(b1) + " :oldres:" + stringify(oldres) + " :newres:" + stringify(newres));
igerasim@8307:           System.out.println(b1);
igerasim@8307:           throw new Exception("Failed");
igerasim@8307:         }
igerasim@8307:       }
igerasim@8307:       if (!bytecompare(oldsum,newsum))  {
igerasim@8307:         System.out.println("Failure: oldsum:" + stringify(oldsum) + " newsum:" + stringify(newsum));
igerasim@8307:         throw new Exception("Failed");
igerasim@8307:       } else {
igerasim@8307:         System.out.println("Success");
igerasim@8307:       }
igerasim@8307:    }
igerasim@8307: }