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/*
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* Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.graalvm.compiler.core.test;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.stream.Collectors;
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import org.graalvm.compiler.api.replacements.Fold;
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import org.graalvm.compiler.nodes.StructuredGraph;
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import org.graalvm.compiler.nodes.graphbuilderconf.GeneratedInvocationPlugin;
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import org.graalvm.compiler.nodes.java.MethodCallTargetNode;
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import org.graalvm.compiler.nodes.spi.CoreProviders;
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import org.graalvm.compiler.phases.VerifyPhase;
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import jdk.vm.ci.meta.ResolvedJavaMethod;
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import jdk.vm.ci.meta.ResolvedJavaType;
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/**
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* Verifies that all {@link Fold} annotated methods have at least one caller.
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*/
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public class VerifyFoldableMethods extends VerifyPhase<CoreProviders> {
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@Override
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public boolean checkContract() {
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return false;
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}
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private final Map<ResolvedJavaMethod, Boolean> foldables = new ConcurrentHashMap<>();
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ResolvedJavaType generatedInvocationPluginType;
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@Override
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protected void verify(StructuredGraph graph, CoreProviders context) {
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ResolvedJavaMethod method = graph.method();
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if (method.getAnnotation(Fold.class) != null) {
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foldables.putIfAbsent(method, false);
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} else {
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if (generatedInvocationPluginType == null) {
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generatedInvocationPluginType = context.getMetaAccess().lookupJavaType(GeneratedInvocationPlugin.class);
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}
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if (!generatedInvocationPluginType.isAssignableFrom(method.getDeclaringClass())) {
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for (MethodCallTargetNode t : graph.getNodes(MethodCallTargetNode.TYPE)) {
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ResolvedJavaMethod callee = t.targetMethod();
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if (callee.getAnnotation(Fold.class) != null) {
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foldables.put(callee, true);
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}
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}
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}
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}
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}
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public void finish() {
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String uncalled = foldables.entrySet().stream().filter(e -> e.getValue() == false).map(e -> e.getKey().format("%H.%n(%p)")).collect(Collectors.joining(System.lineSeparator() + " "));
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if (uncalled.length() != 0) {
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throw new VerificationError(String.format("Methods annotated with @" + Fold.class.getSimpleName() + " appear to have no usages:%n %s", uncalled));
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}
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}
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}
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