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annotate graal/com.oracle.max.graal.tests/src/com/oracle/graal/compiler/tests/DegeneratedLoopsTest.java @ 5060:4ed4295ce15f

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Update import statements.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Thu, 08 Mar 2012 19:11:12 +0100
parents ed559a528128
children
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1 /*
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.compiler.tests;
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25 import static com.oracle.graal.graph.iterators.NodePredicates.*;
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26
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27 import org.junit.*;
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28
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29 import com.oracle.graal.compiler.phases.*;
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30 import com.oracle.graal.debug.*;
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31 import com.oracle.graal.graph.*;
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32 import com.oracle.graal.nodes.*;
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34 /**
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35 * In the following tests, the usages of local variable "a" are replaced with the integer constant 0.
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36 * Then canonicalization is applied and it is verified that the resulting graph is equal to the
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37 * graph of the method that just has a "return 1" statement in it.
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38 */
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39 public class DegeneratedLoopsTest extends GraphTest {
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40
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41 private static final String REFERENCE_SNIPPET = "referenceSnippet";
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42
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43 @SuppressWarnings("all")
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44 public static int referenceSnippet(int a) {
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45 return 1;
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46 }
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47
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48 @Test
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49 public void test1() {
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50 test("test1Snippet");
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51 }
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53 private static class UnresolvedException extends RuntimeException {
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54 private static final long serialVersionUID = 5215434338750728440L;
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55
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56 static {
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57 if (true) {
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58 throw new UnsupportedOperationException("this class may never be initialized");
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59 }
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60 }
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61 }
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62
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63 @SuppressWarnings("all")
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64 public static int test1Snippet(int a) {
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65 for (;;) {
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66 try {
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67 test();
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68 break;
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69 } catch (UnresolvedException e) {
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70 }
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71 }
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72 return a;
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73 }
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74
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75 private static void test() {
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77 }
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79 private void test(String snippet) {
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80 StructuredGraph graph = parse(snippet);
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81 Debug.dump(graph, "Graph");
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82 LocalNode local = graph.getNodes(LocalNode.class).iterator().next();
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83 ConstantNode constant = ConstantNode.forInt(0, graph);
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84 for (Node n : local.usages().filter(isNotA(FrameState.class)).snapshot()) {
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85 n.replaceFirstInput(local, constant);
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86 }
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87 for (Invoke invoke : graph.getInvokes()) {
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88 invoke.intrinsify(null);
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89 }
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90 new CanonicalizerPhase(null, runtime(), null).apply(graph);
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91 StructuredGraph referenceGraph = parse(REFERENCE_SNIPPET); Debug.dump(referenceGraph, "Graph");
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92 assertEquals(referenceGraph, graph);
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93 }
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94 }