blob: 16da08250d8853a1c88a0734511f0b12f9d0da3e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//
using Microsoft.Xunit.Performance;
using System;
using System.Runtime.CompilerServices;
using Xunit;
[assembly: OptimizeForBenchmarks]
namespace Benchstone.BenchI
{
public static class AddArray
{
#if DEBUG
public const int Iterations = 1;
#else
public const int Iterations = 15000;
#endif
const int Size = 6000;
public static volatile object VolatileObject;
[MethodImpl(MethodImplOptions.NoInlining)]
static void Escape(object obj) {
VolatileObject = obj;
}
[MethodImpl(MethodImplOptions.NoInlining)]
static bool Bench() {
int[] flags1 = new int[Size + 1];
int[] flags2 = new int[Size + 1];
int[] flags3 = new int[Size + 1];
int[] flags4 = new int[Size + 1];
int j, k, l, m;
for (j = 0; j <= Size; j++) {
flags1[j] = 70000 + j;
k = j;
flags2[k] = flags1[j] + k + k;
l = j;
flags3[l] = flags2[k] + l + l + l;
m = j;
flags4[m] = flags3[l] + m + m + m + m;
}
for (j = 0; j <= Size; j++) {
k = j;
l = j;
m = j;
flags1[j] = flags1[j] + flags2[k] + flags3[l] + flags4[m] - flags2[k - j + l];
}
// Escape each flags array so that their elements will appear live-out
Escape(flags1);
Escape(flags2);
Escape(flags3);
Escape(flags4);
return true;
}
[Benchmark]
public static void Test() {
foreach (var iteration in Benchmark.Iterations) {
using (iteration.StartMeasurement()) {
for (int i = 0; i < Iterations; i++) {
Bench();
}
}
}
}
static bool TestBase() {
bool result = true;
for (int i = 0; i < Iterations; i++) {
result &= Bench();
}
return result;
}
public static int Main() {
bool result = TestBase();
return (result ? 100 : -1);
}
}
}
|
