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 package org.graalvm.compiler.replacements.test; 24 25 import org.junit.Test; 26 27 import org.graalvm.compiler.api.directives.GraalDirectives; 28 import org.graalvm.compiler.api.replacements.ClassSubstitution; 29 import org.graalvm.compiler.api.replacements.Fold; 30 import org.graalvm.compiler.api.replacements.MethodSubstitution; 31 import org.graalvm.compiler.bytecode.BytecodeProvider; 32 import org.graalvm.compiler.core.test.GraalCompilerTest; 33 import org.graalvm.compiler.nodes.ReturnNode; 34 import org.graalvm.compiler.nodes.StartNode; 35 import org.graalvm.compiler.nodes.StructuredGraph; 36 import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration; 37 import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration.Plugins; 38 import org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugins; 39 import org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugins.Registration; 40 import org.graalvm.compiler.nodes.graphbuilderconf.NodeIntrinsicPluginFactory.InjectionProvider; 41 import org.graalvm.compiler.replacements.NodeIntrinsificationProvider; 42 43 public class FoldTest extends GraalCompilerTest { 44 45 private static class TestMethod { 46 47 public static int test() { 48 return 42; 49 } 50 } 51 52 static class FoldUtils { 53 54 private int number; 55 56 FoldUtils(int number) { 57 this.number = number; 58 } 59 60 @Fold 61 static int multiply(int a, int b) { 62 // we want to test whether @Fold works, so prevent automatic constant folding 63 return a * GraalDirectives.opaque(b); 64 } 65 66 @Fold 67 int getNumber() { 68 // we want to test whether @Fold works, so prevent automatic constant folding 69 return GraalDirectives.opaque(number); 70 } 71 } 72 73 @ClassSubstitution(TestMethod.class) 74 private static class TestMethodSubstitution { 75 76 private static final FoldUtils utils = new FoldUtils(21); 77 78 @MethodSubstitution 79 public static int test() { 80 return FoldUtils.multiply(utils.getNumber(), 2); 81 } 82 } 83 84 @Override 85 protected GraphBuilderConfiguration editGraphBuilderConfiguration(GraphBuilderConfiguration conf) { 86 InvocationPlugins invocationPlugins = conf.getPlugins().getInvocationPlugins(); 87 BytecodeProvider replacementBytecodeProvider = getReplacements().getReplacementBytecodeProvider(); 88 Registration r = new Registration(invocationPlugins, TestMethod.class, replacementBytecodeProvider); 89 r.registerMethodSubstitution(TestMethodSubstitution.class, "test"); 90 return super.editGraphBuilderConfiguration(conf); 91 } 92 93 public static int callTest() { 94 return TestMethod.test(); 95 } 96 97 @Override 98 protected Plugins getDefaultGraphBuilderPlugins() { 99 Plugins ret = super.getDefaultGraphBuilderPlugins(); 100 // manually register generated factories, jvmci service providers don't work from unit tests 101 InjectionProvider injection = new NodeIntrinsificationProvider(getMetaAccess(), getSnippetReflection(), getProviders().getForeignCalls(), null); 102 new PluginFactory_FoldTest().registerPlugins(ret.getInvocationPlugins(), injection); 103 return ret; 104 } 105 106 @Override 107 protected boolean checkHighTierGraph(StructuredGraph graph) { 108 // check that folding happened correctly 109 StartNode start = graph.start(); 110 assert start.next() instanceof ReturnNode : "expected ReturnNode, got " + start.next(); 111 112 ReturnNode ret = (ReturnNode) start.next(); 113 assert ret.result().isConstant() : "expected ConstantNode, got " + ret.result(); 114 return true; 115 } 116 117 @Test 118 public void snippetTest() { 119 test("callTest"); 120 } 121 }