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
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 */
24
25 /**
26 * @test
27 * @bug 8074981
28 * @summary Add C2 x86 Superword support for scalar sum reduction optimizations : float 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_Float
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_Float
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_Float
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_Float
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_Float
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_Float
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_Float
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_Float
74 */
75
76 package compiler.loopopts.superword;
77
78 public class SumRed_Float {
79 public static void main(String[] args) throws Exception {
80 float[] a = new float[256 * 1024];
81 float[] b = new float[256 * 1024];
82 float[] c = new float[256 * 1024];
83 float[] d = new float[256 * 1024];
84 sumReductionInit(a, b, c);
85 float total = 0;
86 float valid = (float) 4.611686E18;
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 float[] a,
101 float[] b,
102 float[] 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 float sumReductionImplement(
113 float[] a,
114 float[] b,
115 float[] c,
116 float[] d,
117 float 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 }