1/*
2 * Copyright (c) 2015, 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
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7 * published by the Free Software Foundation.
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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
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 */
23
24/**
25 * @test
26 * @bug 8138583
27 * @summary Add C2 AArch64 Superword support for scalar sum reduction optimizations : double abs & neg test
28 * @requires os.arch=="aarch64"
29 *
30 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
31 *      -XX:CompileThresholdScaling=0.1
32 *      -XX:+SuperWordReductions
33 *      -XX:LoopMaxUnroll=2
34 *      compiler.loopopts.superword.SumRedAbsNeg_Double
35 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
36 *      -XX:CompileThresholdScaling=0.1
37 *      -XX:-SuperWordReductions
38 *      -XX:LoopMaxUnroll=2
39 *      compiler.loopopts.superword.SumRedAbsNeg_Double
40 *
41 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
42 *      -XX:CompileThresholdScaling=0.1
43 *      -XX:+SuperWordReductions
44 *      -XX:LoopMaxUnroll=4
45 *      compiler.loopopts.superword.SumRedAbsNeg_Double
46 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
47 *      -XX:CompileThresholdScaling=0.1
48 *      -XX:-SuperWordReductions
49 *      -XX:LoopMaxUnroll=4
50 *      compiler.loopopts.superword.SumRedAbsNeg_Double
51 *
52 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
53 *      -XX:CompileThresholdScaling=0.1
54 *      -XX:+SuperWordReductions
55 *      -XX:LoopMaxUnroll=8
56 *      compiler.loopopts.superword.SumRedAbsNeg_Double
57 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
58 *      -XX:CompileThresholdScaling=0.1
59 *      -XX:-SuperWordReductions
60 *      -XX:LoopMaxUnroll=8
61 *      compiler.loopopts.superword.SumRedAbsNeg_Double
62 *
63 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
64 *      -XX:CompileThresholdScaling=0.1
65 *      -XX:+SuperWordReductions
66 *      -XX:LoopMaxUnroll=16
67 *      compiler.loopopts.superword.SumRedAbsNeg_Double
68 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
69 *      -XX:CompileThresholdScaling=0.1
70 *      -XX:-SuperWordReductions
71 *      -XX:LoopMaxUnroll=16
72 *      compiler.loopopts.superword.SumRedAbsNeg_Double
73 */
74
75package compiler.loopopts.superword;
76
77public class SumRedAbsNeg_Double {
78    public static void main(String[] args) throws Exception {
79        double[] a = new double[256 * 1024];
80        double[] b = new double[256 * 1024];
81        double[] c = new double[256 * 1024];
82        double[] d = new double[256 * 1024];
83        sumReductionInit(a, b, c);
84        double total = 0;
85        double valid = 3.6028590866691944E19;
86
87        for (int j = 0; j < 2000; j++) {
88            total = sumReductionImplement(a, b, c, d, total);
89        }
90
91        if (total == valid) {
92            System.out.println("Success");
93        } else {
94            System.out.println("Invalid sum of elements variable in total: " + total);
95            System.out.println("Expected value = " + valid);
96            throw new Exception("Failed");
97        }
98    }
99
100    public static void sumReductionInit(
101            double[] a,
102            double[] b,
103            double[] c) {
104        for (int j = 0; j < 1; j++) {
105            for (int i = 0; i < a.length; i++) {
106                a[i] = i * 1 + j;
107                b[i] = i * 1 - j;
108                c[i] = i + j;
109            }
110        }
111    }
112
113    public static double sumReductionImplement(
114            double[] a,
115            double[] b,
116            double[] c,
117            double[] d,
118            double total) {
119        for (int i = 0; i < a.length; i++) {
120            d[i] = Math.abs(-a[i] * -b[i]) + Math.abs(-a[i] * -c[i]) + Math.abs(-b[i] * -c[i]);
121            total += d[i];
122        }
123        return total;
124    }
125
126}
127