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.acmp.array;
24 
25 import org.openjdk.jmh.annotations.Benchmark;
26 import org.openjdk.jmh.annotations.BenchmarkMode;
27 import org.openjdk.jmh.annotations.CompilerControl;
28 import org.openjdk.jmh.annotations.Fork;
29 import org.openjdk.jmh.annotations.Measurement;
30 import org.openjdk.jmh.annotations.Mode;
31 import org.openjdk.jmh.annotations.OperationsPerInvocation;
32 import org.openjdk.jmh.annotations.OutputTimeUnit;
33 import org.openjdk.jmh.annotations.Scope;
34 import org.openjdk.jmh.annotations.State;
35 import org.openjdk.jmh.annotations.Warmup;
36 
37 import java.util.concurrent.TimeUnit;
38 
39 @Fork(3)
40 @Warmup(iterations = 3, time = 1)
41 @Measurement(iterations = 5, time = 1)
42 @OutputTimeUnit(TimeUnit.NANOSECONDS)
43 @BenchmarkMode(Mode.AverageTime)
44 @State(Scope.Thread)
45 public class IdentityIsNotCmpResult extends StatesR64long {
46 
47     @CompilerControl(CompilerControl.Mode.DONT_INLINE)
48     private static boolean cmp_Obj(Object[] objects1, Object[] objects2) {
49         boolean s = false;
50         for (int i = 0; i < SIZE; i++) {
51             s ^= objects1[i] != objects2[i];
52         }
53         return s;
54     }
55 
56     @Benchmark
57     @OperationsPerInvocation(SIZE)
58     @CompilerControl(CompilerControl.Mode.INLINE)
59     public boolean Obj_equals000(ObjState00 st) {
60         return cmp_Obj(st.arr1, st.arr2);
61     }
62 
63     @Benchmark
64     @OperationsPerInvocation(SIZE)
65     @CompilerControl(CompilerControl.Mode.INLINE)
66     public boolean Obj_equals025(ObjState25 st) {
67         return cmp_Obj(st.arr1, st.arr2);
68     }
69 
70     @Benchmark
71     @OperationsPerInvocation(SIZE)
72     @CompilerControl(CompilerControl.Mode.INLINE)
73     public boolean Obj_equals050(ObjState50 st) {
74         return cmp_Obj(st.arr1, st.arr2);
75     }
76 
77     @Benchmark
78     @OperationsPerInvocation(SIZE)
79     @CompilerControl(CompilerControl.Mode.INLINE)
80     public boolean Obj_equals075(ObjState75 st) {
81         return cmp_Obj(st.arr1, st.arr2);
82     }
83 
84     @Benchmark
85     @OperationsPerInvocation(SIZE)
86     @CompilerControl(CompilerControl.Mode.INLINE)
87     public boolean Obj_equals100(ObjState100 st) {
88         return cmp_Obj(st.arr1, st.arr2);
89     }
90 
91 }