1 /* 2 * Copyright (c) 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.core.test; 26 27 import java.util.Map; 28 import java.util.concurrent.ConcurrentHashMap; 29 import java.util.stream.Collectors; 30 31 import org.graalvm.compiler.api.replacements.Fold; 32 import org.graalvm.compiler.nodes.StructuredGraph; 33 import org.graalvm.compiler.nodes.graphbuilderconf.GeneratedInvocationPlugin; 34 import org.graalvm.compiler.nodes.java.MethodCallTargetNode; 35 import org.graalvm.compiler.nodes.spi.CoreProviders; 36 import org.graalvm.compiler.phases.VerifyPhase; 37 38 import jdk.vm.ci.meta.ResolvedJavaMethod; 39 import jdk.vm.ci.meta.ResolvedJavaType; 40 41 /** 42 * Verifies that all {@link Fold} annotated methods have at least one caller. 43 */ 44 public class VerifyFoldableMethods extends VerifyPhase<CoreProviders> { 45 46 @Override 47 public boolean checkContract() { 48 return false; 49 } 50 51 private final Map<ResolvedJavaMethod, Boolean> foldables = new ConcurrentHashMap<>(); 52 ResolvedJavaType generatedInvocationPluginType; 53 54 @Override 55 protected void verify(StructuredGraph graph, CoreProviders context) { 56 ResolvedJavaMethod method = graph.method(); 57 if (method.getAnnotation(Fold.class) != null) { 58 foldables.putIfAbsent(method, false); 59 } else { 60 if (generatedInvocationPluginType == null) { 61 generatedInvocationPluginType = context.getMetaAccess().lookupJavaType(GeneratedInvocationPlugin.class); 62 } 63 if (!generatedInvocationPluginType.isAssignableFrom(method.getDeclaringClass())) { 64 for (MethodCallTargetNode t : graph.getNodes(MethodCallTargetNode.TYPE)) { 65 ResolvedJavaMethod callee = t.targetMethod(); 66 if (callee.getAnnotation(Fold.class) != null) { 67 foldables.put(callee, true); 68 } 69 } 70 } 71 } 72 } 73 74 public void finish() { 75 String uncalled = foldables.entrySet().stream().filter(e -> e.getValue() == false).map(e -> e.getKey().format("%H.%n(%p)")).collect(Collectors.joining(System.lineSeparator() + " ")); 76 if (uncalled.length() != 0) { 77 throw new VerificationError(String.format("Methods annotated with @" + Fold.class.getSimpleName() + " appear to have no usages:%n %s", uncalled)); 78 } 79 } 80 }