SumRed_Int.java revision 11707:ad7af1afda7a 
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24
25/**
26 * @test
27 * @bug 8074981
28 * @summary Add C2 x86 Superword support for scalar sum reduction optimizations : int test
29 * @requires os.arch=="x86" | os.arch=="i386" | os.arch=="amd64" | os.arch=="x86_64" | os.arch=="aarch64"
30 *
31 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
32 *      -XX:CompileThresholdScaling=0.1
33 *      -XX:+SuperWordReductions
34 *      -XX:LoopMaxUnroll=2
35 *      compiler.loopopts.superword.SumRed_Int
36 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
37 *      -XX:CompileThresholdScaling=0.1
38 *      -XX:-SuperWordReductions
39 *      -XX:LoopMaxUnroll=2
40 *      compiler.loopopts.superword.SumRed_Int
41 *
42 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
43 *      -XX:CompileThresholdScaling=0.1
44 *      -XX:+SuperWordReductions
45 *      -XX:LoopMaxUnroll=4
46 *      compiler.loopopts.superword.SumRed_Int
47 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
48 *      -XX:CompileThresholdScaling=0.1
49 *      -XX:-SuperWordReductions
50 *      -XX:LoopMaxUnroll=4
51 *      compiler.loopopts.superword.SumRed_Int
52 *
53 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
54 *      -XX:CompileThresholdScaling=0.1
55 *      -XX:+SuperWordReductions
56 *      -XX:LoopMaxUnroll=8
57 *      compiler.loopopts.superword.SumRed_Int
58 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
59 *      -XX:CompileThresholdScaling=0.1
60 *      -XX:-SuperWordReductions
61 *      -XX:LoopMaxUnroll=8
62 *      compiler.loopopts.superword.SumRed_Int
63 *
64 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
65 *      -XX:CompileThresholdScaling=0.1
66 *      -XX:+SuperWordReductions
67 *      -XX:LoopMaxUnroll=16
68 *      compiler.loopopts.superword.SumRed_Int
69 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
70 *      -XX:CompileThresholdScaling=0.1
71 *      -XX:-SuperWordReductions
72 *      -XX:LoopMaxUnroll=16
73 *      compiler.loopopts.superword.SumRed_Int
74 */
75
76package compiler.loopopts.superword;
77
78public class SumRed_Int {
79    public static void main(String[] args) throws Exception {
80        int[] a = new int[256 * 1024];
81        int[] b = new int[256 * 1024];
82        int[] c = new int[256 * 1024];
83        int[] d = new int[256 * 1024];
84        sumReductionInit(a, b, c);
85        int total = 0;
86        int valid = 262144000;
87        for (int j = 0; j < 2000; j++) {
88            total = sumReductionImplement(a, b, c, d, total);
89        }
90        if (total == valid) {
91            System.out.println("Success");
92        } else {
93            System.out.println("Invalid sum of elements variable in total: " + total);
94            System.out.println("Expected value = " + valid);
95            throw new Exception("Failed");
96        }
97    }
98
99    public static void sumReductionInit(
100            int[] a,
101            int[] b,
102            int[] c) {
103        for (int j = 0; j < 1; j++) {
104            for (int i = 0; i < a.length; i++) {
105                a[i] = i * 1 + j;
106                b[i] = i * 1 - j;
107                c[i] = i + j;
108            }
109        }
110    }
111
112    public static int sumReductionImplement(
113            int[] a,
114            int[] b,
115            int[] c,
116            int[] d,
117            int total) {
118        for (int i = 0; i < a.length; i++) {
119            d[i] = (a[i] * b[i]) + (a[i] * c[i]) + (b[i] * c[i]);
120            total += d[i];
121        }
122        return total;
123    }
124
125}
126