1 /*
2  * Copyright (c) 2015, 2018, 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 package org.graalvm.compiler.jtt.loop;
26 
27 import org.junit.Test;
28 
29 import org.graalvm.compiler.jtt.JTTTest;
30 
31 public class LoopSpilling extends JTTTest {
32 
33     private static final int ITERATION = 64;
34 
35     /**
36      * Modification of sun.security.provider.SHA2.implCompress().
37      */
test(int[] state)38     void test(int[] state) {
39 
40         int a1 = state[0];
41         int b1 = state[1];
42         int c1 = state[2];
43         int d1 = state[3];
44         int e1 = state[4];
45         int f1 = state[5];
46         int g1 = state[6];
47         int h1 = state[7];
48 
49         // 2nd
50         int a2 = state[8];
51         int b2 = state[9];
52         int c2 = state[10];
53         int d2 = state[11];
54         int e2 = state[12];
55         int f2 = state[13];
56         int g2 = state[14];
57         int h2 = state[15];
58 
59         for (int i = 0; i < ITERATION; i++) {
60             h1 = g1;
61             g1 = f1;
62             f1 = e1;
63             e1 = d1;
64             d1 = c1;
65             c1 = b1;
66             b1 = a1;
67             a1 = h1;
68             // 2nd
69             h2 = g2;
70             g2 = f2;
71             f2 = e2;
72             e2 = d2;
73             d2 = c2;
74             c2 = b2;
75             b2 = a2;
76             a2 = h2;
77         }
78         state[0] += a1;
79         state[1] += b1;
80         state[2] += c1;
81         state[3] += d1;
82         state[4] += e1;
83         state[5] += f1;
84         state[6] += g1;
85         state[7] += h1;
86         // 2nd
87         state[8] += a2;
88         state[9] += b2;
89         state[10] += c2;
90         state[11] += d2;
91         state[12] += e2;
92         state[13] += f2;
93         state[14] += g2;
94         state[15] += h2;
95     }
96 
97     private static final int[] INITIAL_HASHES = {0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939, 0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4, 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
98                     0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19};
99 
100     @Test
run0()101     public void run0() throws Throwable {
102         runTest("test", supply(() -> INITIAL_HASHES.clone()));
103     }
104 
105 }
106