1 /* 2 * Copyright (c) 2012, 2013, 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 8005419 27 * @summary Improve intrinsics code performance on x86 by using AVX2 28 * 29 * @run main/othervm -Xbatch -Xmx64m compiler.intrinsics.Test8005419 30 */ 31 32 package compiler.intrinsics; 33 34 public class Test8005419 { 35 public static int SIZE = 64; 36 37 public static void main(String[] args) { 38 char[] a = new char[SIZE]; 39 char[] b = new char[SIZE]; 40 41 for (int i = 16; i < SIZE; i++) { 42 a[i] = (char)i; 43 b[i] = (char)i; 44 } 45 String s1 = new String(a); 46 String s2 = new String(b); 47 48 // Warm up 49 boolean failed = false; 50 int result = 0; 51 for (int i = 0; i < 10000; i++) { 52 result += test(s1, s2); 53 } 54 for (int i = 0; i < 10000; i++) { 55 result += test(s1, s2); 56 } 57 for (int i = 0; i < 10000; i++) { 58 result += test(s1, s2); 59 } 60 if (result != 0) failed = true; 61 62 System.out.println("Start testing"); 63 // Compare same string 64 result = test(s1, s1); 65 if (result != 0) { 66 failed = true; 67 System.out.println("Failed same: result = " + result + ", expected 0"); 68 } 69 // Compare equal strings 70 for (int i = 1; i <= SIZE; i++) { 71 s1 = new String(a, 0, i); 72 s2 = new String(b, 0, i); 73 result = test(s1, s2); 74 if (result != 0) { 75 failed = true; 76 System.out.println("Failed equals s1[" + i + "], s2[" + i + "]: result = " + result + ", expected 0"); 77 } 78 } 79 // Compare equal strings but different sizes 80 for (int i = 1; i <= SIZE; i++) { 81 s1 = new String(a, 0, i); 82 for (int j = 1; j <= SIZE; j++) { 83 s2 = new String(b, 0, j); 84 result = test(s1, s2); 85 if (result != (i-j)) { 86 failed = true; 87 System.out.println("Failed diff size s1[" + i + "], s2[" + j + "]: result = " + result + ", expected " + (i-j)); 88 } 89 } 90 } 91 // Compare strings with one char different and different sizes 92 for (int i = 1; i <= SIZE; i++) { 93 s1 = new String(a, 0, i); 94 for (int j = 0; j < i; j++) { 95 b[j] -= 3; // change char 96 s2 = new String(b, 0, i); 97 result = test(s1, s2); 98 int chdiff = a[j] - b[j]; 99 if (result != chdiff) { 100 failed = true; 101 System.out.println("Failed diff char s1[" + i + "], s2[" + i + "]: result = " + result + ", expected " + chdiff); 102 } 103 result = test(s2, s1); 104 chdiff = b[j] - a[j]; 105 if (result != chdiff) { 106 failed = true; 107 System.out.println("Failed diff char s2[" + i + "], s1[" + i + "]: result = " + result + ", expected " + chdiff); 108 } 109 b[j] += 3; // restore 110 } 111 } 112 if (failed) { 113 System.out.println("FAILED"); 114 System.exit(97); 115 } 116 System.out.println("PASSED"); 117 } 118 119 private static int test(String str1, String str2) { 120 return str1.compareTo(str2); 121 } 122 }