ConstantPhiTest.java revision 12651:6ef01bd40ce2 
1/*
2 * Copyright (c) 2015, 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 */
23package org.graalvm.compiler.jtt.backend;
24
25import static org.graalvm.compiler.api.directives.GraalDirectives.LIKELY_PROBABILITY;
26import static org.graalvm.compiler.api.directives.GraalDirectives.injectBranchProbability;
27
28import java.lang.reflect.Method;
29
30import org.junit.Test;
31
32import org.graalvm.compiler.core.common.GraalOptions;
33import org.graalvm.compiler.jtt.JTTTest;
34import org.graalvm.compiler.options.OptionValue;
35import org.graalvm.compiler.options.OptionValue.OverrideScope;
36
37public class ConstantPhiTest extends JTTTest {
38
39    public static int test(int i, int x) throws Throwable {
40        int r;
41        if (injectBranchProbability(LIKELY_PROBABILITY, i < 0)) {
42            r = 42;
43        } else {
44            r = x;
45        }
46        destroyCallerSavedValues();
47        return r;
48    }
49
50    protected static void destroyCallerSavedValues() throws Throwable {
51        Class<ConstantPhiTest> c = ConstantPhiTest.class;
52        Method m = c.getMethod("destroyCallerSavedValues0");
53        m.invoke(null);
54    }
55
56    public static void destroyCallerSavedValues0() {
57    }
58
59    @Test
60    @SuppressWarnings("try")
61    public void run0() {
62        try (OverrideScope os = OptionValue.override(GraalOptions.MaximumInliningSize, -1)) {
63            runTest("test", 0, 0xDEADDEAD);
64        }
65    }
66
67    @Test
68    @SuppressWarnings("try")
69    public void run1() {
70        try (OverrideScope os = OptionValue.override(GraalOptions.MaximumInliningSize, -1)) {
71            runTest("test", -1, 0xDEADDEAD);
72        }
73    }
74
75    @Test
76    @SuppressWarnings("try")
77    public void run2() {
78        try (OverrideScope os = OptionValue.override(GraalOptions.MaximumInliningSize, -1)) {
79            runTest("test", 1, 0xDEADDEAD);
80        }
81    }
82}
83