1 /* 2 * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 4093292 27 * @summary Test for correct code generation by the JIT 28 */ 29 public class ShiftTest { 30 static final int w = 32; 31 32 private static void doTest(long ct) throws Exception { 33 int S22 = 0xc46cf7c2; 34 int S23 = 0xcfda9162; 35 int S24 = 0xd029aa4c; 36 int S25 = 0x17cf1801; 37 int A = (int)(ct & 0xffffffffL); 38 int B = (int)(ct >>> 32); 39 int x, y; 40 x = B - S25; 41 y = A & (w-1); 42 B = ((x >>> y) | (x << (w-y))) ^ A; 43 x = A - S24; 44 y = B & (w-1); 45 A = ((x >>> y) | (x << (w-y))) ^ B; 46 x = B - S23; 47 y = A & (w-1); 48 B = ((x >>> y) | (x << (w-y))) ^ A; 49 x = A - S22; 50 y = B & (w-1); 51 A = ((x >>> y) | (x << (w-y))) ^ B; 52 String astr = Integer.toHexString(A); 53 String bstr = Integer.toHexString(B); 54 System.err.println("A = " + astr + " B = " + bstr); 55 if ((!astr.equals("dcb38144")) || 56 (!bstr.equals("1916de73"))) { 57 throw new RuntimeException("Unexpected shift results!"); 58 } 59 System.err.println("Test passed"); 60 } 61 62 public static void main(String[] args) throws Exception { 63 doTest(0x496def29b74be041L); 64 } 65 }