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/*
* Copyright (c) 2015, 2020, 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
* @key randomness
* @bug 8081778
* @summary Add C2 x86 intrinsic for BigInteger::squareToLen() method
* @library /test/lib
*
* @run main/othervm/timeout=600 -XX:-TieredCompilation -Xbatch
* -XX:CompileCommand=exclude,compiler.intrinsics.bigInteger.TestSquareToLen::main
* -XX:CompileCommand=option,compiler.intrinsics.bigInteger.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
* compiler.intrinsics.bigInteger.TestSquareToLen
*/
package compiler.intrinsics.bigInteger;
import java.math.BigInteger;
import java.util.Random;
import jdk.test.lib.Utils;
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(Utils.getRandomInstance().nextLong());
Random rand1 = new Random(Utils.getRandomInstance().nextLong());
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");
}
}
}
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