Mercurial > hg > truffle
diff test/compiler/intrinsics/multiplytolen/TestMultiplyToLen.java @ 20438:166d744df0de
8055494: Add C2 x86 intrinsic for BigInteger::multiplyToLen() method
Summary: Add new C2 intrinsic for BigInteger::multiplyToLen() on x86 in 64-bit VM.
Reviewed-by: roland
author | kvn |
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date | Tue, 02 Sep 2014 12:48:45 -0700 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/intrinsics/multiplytolen/TestMultiplyToLen.java Tue Sep 02 12:48:45 2014 -0700 @@ -0,0 +1,113 @@ +/* + * Copyright (c) 2014, 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 8055494 + * @summary Add C2 x86 intrinsic for BigInteger::multiplyToLen() method + * + * @run main/othervm/timeout=600 -XX:-TieredCompilation -Xbatch + * -XX:CompileCommand=exclude,TestMultiplyToLen::main + * -XX:CompileCommand=option,TestMultiplyToLen::base_multiply,ccstr,DisableIntrinsic,_multiplyToLen + * -XX:CompileCommand=option,java.math.BigInteger::multiply,ccstr,DisableIntrinsic,_multiplyToLen + * -XX:CompileCommand=inline,java.math.BigInteger::multiply TestMultiplyToLen + */ + +import java.util.Random; +import java.math.*; + +public class TestMultiplyToLen { + + // Avoid intrinsic by preventing inlining multiply() and multiplyToLen(). + public static BigInteger base_multiply(BigInteger op1, BigInteger op2) { + return op1.multiply(op2); + } + + // Generate multiplyToLen() intrinsic by inlining multiply(). + public static BigInteger new_multiply(BigInteger op1, BigInteger op2) { + return op1.multiply(op2); + } + + 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 < 1000000; j++) { + int rand_int = rand1.nextInt(3136)+32; + int rand_int1 = rand1.nextInt(3136)+32; + b1 = new BigInteger(rand_int, rand); + b2 = new BigInteger(rand_int1, rand); + + oldres = base_multiply(b1,b2); + newres = new_multiply(b1,b2); + + oldsum = oldsum.add(oldres); + newsum = newsum.add(newres); + + if (!bytecompare(oldres,newres)) { + System.out.print("mismatch for:b1:" + stringify(b1) + " :b2:" + stringify(b2) + " :oldres:" + stringify(oldres) + " :newres:" + stringify(newres)); + System.out.println(b1); + System.out.println(b2); + 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"); + } + } +}