Mercurial > hg > graal-compiler
comparison test/compiler/8005419/Test8005419.java @ 7477:038dd2875b94
8005419: Improve intrinsics code performance on x86 by using AVX2
Summary: use 256bit vpxor,vptest instructions in String.compareTo() and equals() intrinsics.
Reviewed-by: twisti
author | kvn |
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date | Tue, 08 Jan 2013 11:30:51 -0800 |
parents | |
children | de6a9e811145 |
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7476:ffa87474d7a4 | 7477:038dd2875b94 |
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1 /* | |
2 * Copyright (c) 2012, 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 * @run main/othervm -Xbatch -Xmx64m Test8005419 | |
29 * | |
30 */ | |
31 | |
32 public class Test8005419 { | |
33 public static int SIZE = 64; | |
34 | |
35 public static void main(String[] args) { | |
36 char[] a = new char[SIZE]; | |
37 char[] b = new char[SIZE]; | |
38 | |
39 for (int i = 16; i < SIZE; i++) { | |
40 a[i] = (char)i; | |
41 b[i] = (char)i; | |
42 } | |
43 String s1 = new String(a); | |
44 String s2 = new String(b); | |
45 | |
46 // Warm up | |
47 boolean failed = false; | |
48 int result = 0; | |
49 for (int i = 0; i < 10000; i++) { | |
50 result += test(s1, s2); | |
51 } | |
52 for (int i = 0; i < 10000; i++) { | |
53 result += test(s1, s2); | |
54 } | |
55 for (int i = 0; i < 10000; i++) { | |
56 result += test(s1, s2); | |
57 } | |
58 if (result != 0) failed = true; | |
59 | |
60 System.out.println("Start testing"); | |
61 // Compare same string | |
62 result = test(s1, s1); | |
63 if (result != 0) { | |
64 failed = true; | |
65 System.out.println("Failed same: result = " + result + ", expected 0"); | |
66 } | |
67 // Compare equal strings | |
68 for (int i = 1; i <= SIZE; i++) { | |
69 s1 = new String(a, 0, i); | |
70 s2 = new String(b, 0, i); | |
71 result = test(s1, s2); | |
72 if (result != 0) { | |
73 failed = true; | |
74 System.out.println("Failed equals s1[" + i + "], s2[" + i + "]: result = " + result + ", expected 0"); | |
75 } | |
76 } | |
77 // Compare equal strings but different sizes | |
78 for (int i = 1; i <= SIZE; i++) { | |
79 s1 = new String(a, 0, i); | |
80 for (int j = 1; j <= SIZE; j++) { | |
81 s2 = new String(b, 0, j); | |
82 result = test(s1, s2); | |
83 if (result != (i-j)) { | |
84 failed = true; | |
85 System.out.println("Failed diff size s1[" + i + "], s2[" + j + "]: result = " + result + ", expected " + (i-j)); | |
86 } | |
87 } | |
88 } | |
89 // Compare strings with one char different and different sizes | |
90 for (int i = 1; i <= SIZE; i++) { | |
91 s1 = new String(a, 0, i); | |
92 for (int j = 0; j < i; j++) { | |
93 b[j] -= 3; // change char | |
94 s2 = new String(b, 0, i); | |
95 result = test(s1, s2); | |
96 int chdiff = a[j] - b[j]; | |
97 if (result != chdiff) { | |
98 failed = true; | |
99 System.out.println("Failed diff char s1[" + i + "], s2[" + i + "]: result = " + result + ", expected " + chdiff); | |
100 } | |
101 result = test(s2, s1); | |
102 chdiff = b[j] - a[j]; | |
103 if (result != chdiff) { | |
104 failed = true; | |
105 System.out.println("Failed diff char s2[" + i + "], s1[" + i + "]: result = " + result + ", expected " + chdiff); | |
106 } | |
107 b[j] += 3; // restore | |
108 } | |
109 } | |
110 if (failed) { | |
111 System.out.println("FAILED"); | |
112 System.exit(97); | |
113 } | |
114 System.out.println("PASSED"); | |
115 } | |
116 | |
117 private static int test(String str1, String str2) { | |
118 return str1.compareTo(str2); | |
119 } | |
120 } |