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annotate graal/com.oracle.max.graal.tests/src/com/oracle/max/graal/compiler/tests/BoxingEliminationTest.java @ 4411:cd2b68ef8e23

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cleanup around filter and predicates : remove duplicate compiler.util.NodeIterators add contains to NodeIterable support isNotA(Class).nor(Class) filtering support filtering on interfaces remove and/or(Class) from FilteredNodeIterable replace with isA(Class).or(Class) lower the cost on extending NodeIterable (remove the until field) NodeList is a NodeIterable Use NodeIterable functions where possible
author Gilles Duboscq <duboscq@ssw.jku.at>
date Mon, 30 Jan 2012 13:06:11 +0100
parents 4df4499e0289
children c8de52cc672a
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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.max.graal.compiler.tests;
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24
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25 import static com.oracle.max.graal.graph.iterators.NodePredicates.*;
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26
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27 import java.util.*;
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28
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29 import org.junit.*;
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30
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31 import com.oracle.max.graal.compiler.phases.*;
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32 import com.oracle.max.graal.compiler.phases.PhasePlan.PhasePosition;
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33 import com.oracle.max.graal.graph.*;
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34 import com.oracle.max.graal.nodes.*;
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35 import com.oracle.max.graal.nodes.extended.*;
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36
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37 /**
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38 * In the following tests, the usages of local variable "a" are replaced with the integer constant 0.
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39 * Then boxing elimination is applied and it is verified that the resulting graph is equal to the
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40 * graph of the method that just has a "return 1" statement in it.
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41 */
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42 public class BoxingEliminationTest extends GraphTest {
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43
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44 private static final String REFERENCE_SNIPPET = "referenceSnippet";
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45
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46 @SuppressWarnings("all")
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47 public static int referenceSnippet(int a) {
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48 return 1;
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49 }
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50
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51 public static Integer boxedInteger() {
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52 return 1;
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53 }
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54
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55 public static Object boxedObject() {
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56 return 1;
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57 }
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58
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59 @Test
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60 public void test1() {
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61 test("test1Snippet");
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62 }
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63
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64 @SuppressWarnings("all")
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65 public static int test1Snippet(int a) {
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66 return boxedInteger();
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67 }
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68
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69 @Test
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70 public void test2() {
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71 test("test2Snippet");
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72 }
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73
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74 @SuppressWarnings("all")
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75 public static int test2Snippet(int a) {
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76 return (Integer) boxedObject();
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77 }
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78 @Test
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79 public void test3() {
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80 test("test3Snippet");
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81 }
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82
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83 @SuppressWarnings("all")
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84 public static int test3Snippet(int a) {
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85 int b = boxedInteger();
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86 if (b < 0) {
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87 b = boxedInteger();
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88 }
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89 return b;
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90 }
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91
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92 private void test(String snippet) {
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93 StructuredGraph graph = parse(snippet);
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94 BoxingMethodPool pool = new BoxingMethodPool(runtime());
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95 IdentifyBoxingPhase identifyBoxingPhase = new IdentifyBoxingPhase(pool);
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96 PhasePlan phasePlan = getDefaultPhasePlan();
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97 phasePlan.addPhase(PhasePosition.AFTER_PARSING, identifyBoxingPhase);
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98 identifyBoxingPhase.apply(graph);
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99 LocalNode local = graph.getNodes(LocalNode.class).iterator().next();
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100 ConstantNode constant = ConstantNode.forInt(0, graph);
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101 for (Node n : local.usages().filter(isNotA(FrameState.class)).snapshot()) {
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102 n.replaceFirstInput(local, constant);
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103 }
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104 Collection<Invoke> hints = new ArrayList<>();
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105 for (Invoke invoke : graph.getInvokes()) {
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106 hints.add(invoke);
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107 }
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108 new InliningPhase(null, runtime(), hints, null, phasePlan).apply(graph);
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109 new CanonicalizerPhase(null, runtime(), null).apply(graph);
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110 print(graph);
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111 new BoxingEliminationPhase().apply(graph);
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112 print(graph);
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113 new ExpandBoxingNodesPhase(pool).apply(graph);
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114 new CanonicalizerPhase(null, runtime(), null).apply(graph);
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115 new DeadCodeEliminationPhase().apply(graph);
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116 StructuredGraph referenceGraph = parse(REFERENCE_SNIPPET);
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117 assertEquals(referenceGraph, graph);
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118 }
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119 }