1 /*
 2  * Copyright (c) 2020, 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 package org.openjdk.bench.valhalla.array.fill1;
24 
25 import org.openjdk.bench.valhalla.array.util.PrimitiveStates;
26 import org.openjdk.jmh.annotations.Benchmark;
27 import org.openjdk.jmh.annotations.CompilerControl;
28 
29 import java.util.Arrays;
30 
31 public class Primitive64 extends PrimitiveStates {
32 
33 
34     @Benchmark
35     @CompilerControl(CompilerControl.Mode.DONT_INLINE)
36     public void fill0(Primitive64long st) {
37         long[] arr = st.arr;
38         for (int i = 0; i < arr.length; i++) {
39             arr[i] = 42;
40         }
41     }
42 
43     @Benchmark
44     @CompilerControl(CompilerControl.Mode.DONT_INLINE)
45     public void fill1(Primitive64long st) {
46         int len = st.arr.length;
47         for (int i = 0; i < len; i++) {
48             st.arr[i] = 42;
49         }
50     }
51 
52     @Benchmark
53     @CompilerControl(CompilerControl.Mode.DONT_INLINE)
54     public void arrayfill(Primitive64long st) {
55         Arrays.fill(st.arr, 42);
56     }
57 
58 }