132 lines
5.5 KiB
Java
132 lines
5.5 KiB
Java
/*
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* Copyright (c) 2019, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @key randomness
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* @bug 8234692
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* @summary Add C2 x86 intrinsic for BigInteger::shiftLeft() and BigInteger::shiftRight() method
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* @library /test/lib
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* @requires vm.compiler2.enabled
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*
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* @run main/othervm/timeout=600 -XX:-TieredCompilation -Xbatch
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* -XX:CompileCommand=exclude,compiler.intrinsics.bigInteger.TestShift::main
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* -XX:CompileCommand=option,compiler.intrinsics.bigInteger.TestShift::base_left_shift,ccstrlist,DisableIntrinsic,_bigIntegerLeftShiftWorker
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* -XX:CompileCommand=option,compiler.intrinsics.bigInteger.TestShift::base_right_shift,ccstrlist,DisableIntrinsic,_bigIntegerRightShiftWorker
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* -XX:CompileCommand=inline,java.math.BigInteger::shiftLeft
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* -XX:CompileCommand=inline,java.math.BigInteger::shiftRight
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* compiler.intrinsics.bigInteger.TestShift
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*
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* @run main/othervm/timeout=600
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* -XX:CompileCommand=exclude,compiler.intrinsics.bigInteger.TestShift::main
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* -XX:CompileCommand=option,compiler.intrinsics.bigInteger.TestShift::base_left_shift,ccstrlist,DisableIntrinsic,_bigIntegerLeftShiftWorker
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* -XX:CompileCommand=option,compiler.intrinsics.bigInteger.TestShift::base_right_shift,ccstrlist,DisableIntrinsic,_bigIntegerRightShiftWorker
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* -XX:CompileCommand=inline,java.math.BigInteger::shiftLeft
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* -XX:CompileCommand=inline,java.math.BigInteger::shiftRight
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* compiler.intrinsics.bigInteger.TestShift
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*
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*/
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package compiler.intrinsics.bigInteger;
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import java.math.BigInteger;
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import java.util.Arrays;
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import java.util.Random;
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import jdk.test.lib.Utils;
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public class TestShift {
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public static BigInteger base_left_shift(BigInteger op1, int shift) {
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return op1.shiftLeft(shift);
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}
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public static BigInteger new_left_shift(BigInteger op1, int shift) {
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return op1.shiftLeft(shift);
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}
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public static BigInteger base_right_shift(BigInteger op1, int shift) {
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return op1.shiftRight(shift);
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}
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public static BigInteger new_right_shift(BigInteger op1, int shift) {
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return op1.shiftRight(shift);
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}
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public static boolean bytecompare(BigInteger b1, BigInteger b2) {
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byte[] data1 = b1.toByteArray();
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byte[] data2 = b2.toByteArray();
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if (data1.length != data2.length)
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return false;
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for (int i = 0; i < data1.length; i++) {
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if (data1[i] != data2[i])
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return false;
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}
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return true;
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}
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public static String stringify(BigInteger b) {
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String strout= "";
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byte [] data = b.toByteArray();
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for (int i = 0; i < data.length; i++) {
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strout += (String.format("%02x",data[i]) + " ");
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}
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return strout;
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}
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public static void main(String args[]) throws Exception {
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BigInteger [] inputbuffer = new BigInteger[10];
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BigInteger [] oldLeftShiftResult = new BigInteger[10];
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BigInteger [] newLeftShiftResult = new BigInteger[10];
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BigInteger [] oldRightShiftResult = new BigInteger[10];
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BigInteger [] newRightShiftResult = new BigInteger[10];
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Random rand = Utils.getRandomInstance();
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int shiftCount = rand.nextInt(30) + 1;
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for(int i = 0; i < inputbuffer.length; i++) {
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int numbits = rand.nextInt(4096)+32;
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inputbuffer[i] = new BigInteger(numbits, rand);
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}
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for (int j = 0; j < 100000; j++) {
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for(int i = 0; i < inputbuffer.length; i++) {
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oldLeftShiftResult[i] = base_left_shift(inputbuffer[i], shiftCount);
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newLeftShiftResult[i] = new_left_shift(inputbuffer[i], shiftCount);
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if (!bytecompare(oldLeftShiftResult[i], newLeftShiftResult[i])) {
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System.out.println("mismatch for input:" + stringify(inputbuffer[i]) + "\n" + "expected left shift result:" + stringify(oldLeftShiftResult[i]) + "\n" +
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"calculated left shift result:" + stringify(newLeftShiftResult[i]));
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throw new Exception("Failed");
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}
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oldRightShiftResult[i] = base_right_shift(inputbuffer[i], shiftCount);
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newRightShiftResult[i] = new_right_shift(inputbuffer[i], shiftCount);
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if (!bytecompare(oldRightShiftResult[i], newRightShiftResult[i])) {
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System.out.println("mismatch for input:" + stringify(inputbuffer[i]) + "\n" + "expected right shift result:" + stringify(oldRightShiftResult[i]) + "\n" +
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"calculated right shift result:" + stringify(newRightShiftResult[i]));
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throw new Exception("Failed");
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}
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}
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}
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}
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}
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