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comparison test/compiler/7029152/Test.java @ 2412:f9424955eb18

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7029152: Ideal nodes for String intrinsics miss memory edge optimization Summary: In Ideal() method of String intrinsics nodes look for TypeAryPtr::CHARS memory slice if memory is MergeMem. Do not unroll a loop with String intrinsics code. Reviewed-by: never
author kvn
date Wed, 30 Mar 2011 12:08:49 -0700
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2411:63997f575155 2412:f9424955eb18
1 /*
2 * Copyright (c) 2011, 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 7029152
27 * @summary Ideal nodes for String intrinsics miss memory edge optimization
28 *
29 * @run main/othervm -Xbatch Test
30 */
31
32 public class Test {
33
34 static final String str = "11111xx11111xx1x";
35 static int idx = 0;
36
37 static int IndexOfTest(String str) {
38 return str.indexOf("11111xx1x");
39 }
40
41 public static void main(String args[]) {
42 final int ITERS=2000000;
43
44 for (int i=0; i<ITERS; i++) {
45 idx = IndexOfTest(str);
46 }
47 System.out.println("IndexOf = " + idx);
48 }
49 }