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/*
* Copyright (c) 2019, 2023, 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 8234692
* @summary Add C2 x86 intrinsic for BigInteger::shiftLeft() and BigInteger::shiftRight() method
* @library /test/lib
* @requires vm.compiler2.enabled
*
* @run main/othervm/timeout=600 -XX:-TieredCompilation -Xbatch
* -XX:CompileCommand=exclude,compiler.intrinsics.bigInteger.TestShift::main
* -XX:CompileCommand=option,compiler.intrinsics.bigInteger.TestShift::base_left_shift,ccstrlist,DisableIntrinsic,_bigIntegerLeftShiftWorker
* -XX:CompileCommand=option,compiler.intrinsics.bigInteger.TestShift::base_right_shift,ccstrlist,DisableIntrinsic,_bigIntegerRightShiftWorker
* -XX:CompileCommand=inline,java.math.BigInteger::shiftLeft
* -XX:CompileCommand=inline,java.math.BigInteger::shiftRight
* compiler.intrinsics.bigInteger.TestShift
*
* @run main/othervm/timeout=600
* -XX:CompileCommand=exclude,compiler.intrinsics.bigInteger.TestShift::main
* -XX:CompileCommand=option,compiler.intrinsics.bigInteger.TestShift::base_left_shift,ccstrlist,DisableIntrinsic,_bigIntegerLeftShiftWorker
* -XX:CompileCommand=option,compiler.intrinsics.bigInteger.TestShift::base_right_shift,ccstrlist,DisableIntrinsic,_bigIntegerRightShiftWorker
* -XX:CompileCommand=inline,java.math.BigInteger::shiftLeft
* -XX:CompileCommand=inline,java.math.BigInteger::shiftRight
* compiler.intrinsics.bigInteger.TestShift
*
*/
package compiler.intrinsics.bigInteger;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.Random;
import jdk.test.lib.Utils;
public class TestShift {
public static BigInteger base_left_shift(BigInteger op1, int shift) {
return op1.shiftLeft(shift);
}
public static BigInteger new_left_shift(BigInteger op1, int shift) {
return op1.shiftLeft(shift);
}
public static BigInteger base_right_shift(BigInteger op1, int shift) {
return op1.shiftRight(shift);
}
public static BigInteger new_right_shift(BigInteger op1, int shift) {
return op1.shiftRight(shift);
}
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 [] inputbuffer = new BigInteger[10];
BigInteger [] oldLeftShiftResult = new BigInteger[10];
BigInteger [] newLeftShiftResult = new BigInteger[10];
BigInteger [] oldRightShiftResult = new BigInteger[10];
BigInteger [] newRightShiftResult = new BigInteger[10];
Random rand = Utils.getRandomInstance();
int shiftCount = rand.nextInt(30) + 1;
for(int i = 0; i < inputbuffer.length; i++) {
int numbits = rand.nextInt(4096)+32;
inputbuffer[i] = new BigInteger(numbits, rand);
}
for (int j = 0; j < 100000; j++) {
for(int i = 0; i < inputbuffer.length; i++) {
oldLeftShiftResult[i] = base_left_shift(inputbuffer[i], shiftCount);
newLeftShiftResult[i] = new_left_shift(inputbuffer[i], shiftCount);
if (!bytecompare(oldLeftShiftResult[i], newLeftShiftResult[i])) {
System.out.println("mismatch for input:" + stringify(inputbuffer[i]) + "\n" + "expected left shift result:" + stringify(oldLeftShiftResult[i]) + "\n" +
"calculated left shift result:" + stringify(newLeftShiftResult[i]));
throw new Exception("Failed");
}
oldRightShiftResult[i] = base_right_shift(inputbuffer[i], shiftCount);
newRightShiftResult[i] = new_right_shift(inputbuffer[i], shiftCount);
if (!bytecompare(oldRightShiftResult[i], newRightShiftResult[i])) {
System.out.println("mismatch for input:" + stringify(inputbuffer[i]) + "\n" + "expected right shift result:" + stringify(oldRightShiftResult[i]) + "\n" +
"calculated right shift result:" + stringify(newRightShiftResult[i]));
throw new Exception("Failed");
}
}
}
}
}
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