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/*
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* Copyright (c) 2017, 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.lang.reflect.Constructor;
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import java.lang.reflect.Method;
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import jdk.internal.vm.compiler.collections.EconomicSet;
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import org.graalvm.compiler.debug.GraalError;
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import org.graalvm.compiler.graph.Graph;
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import org.graalvm.compiler.graph.Node;
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import org.graalvm.compiler.nodes.ConstantNode;
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import org.graalvm.compiler.nodes.Invoke;
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import org.graalvm.compiler.nodes.ParameterNode;
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import org.graalvm.compiler.nodes.PiNode;
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import org.graalvm.compiler.nodes.StructuredGraph;
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import org.graalvm.compiler.nodes.ValueNode;
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import org.graalvm.compiler.nodes.ValuePhiNode;
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import org.graalvm.compiler.nodes.ValueProxyNode;
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import org.graalvm.compiler.nodes.java.MethodCallTargetNode;
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import org.graalvm.compiler.nodes.java.NewInstanceNode;
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import org.graalvm.compiler.nodes.spi.CoreProviders;
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import org.graalvm.compiler.nodes.spi.LoweringProvider;
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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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public class VerifyGraphAddUsage extends VerifyPhase<CoreProviders> {
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private static final Method ADD_OR_UNIQUE;
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private static final Method CONSTRUCTOR_NEW_INSTANCE;
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private static final EconomicSet<Class<?>> ALLOWED_CLASSES = EconomicSet.create();
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static {
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try {
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ADD_OR_UNIQUE = Graph.class.getDeclaredMethod("addOrUnique", Node.class);
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CONSTRUCTOR_NEW_INSTANCE = Constructor.class.getDeclaredMethod("newInstance", Object[].class);
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} catch (NoSuchMethodException e) {
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throw new GraalError(e);
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}
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ALLOWED_CLASSES.add(Graph.class);
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ALLOWED_CLASSES.add(LoweringProvider.class);
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}
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@Override
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protected void verify(StructuredGraph graph, CoreProviders context) {
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boolean allowed = false;
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for (Class<?> cls : ALLOWED_CLASSES) {
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ResolvedJavaType declaringClass = graph.method().getDeclaringClass();
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if (context.getMetaAccess().lookupJavaType(cls).isAssignableFrom(declaringClass)) {
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allowed = true;
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}
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}
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if (!allowed) {
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ResolvedJavaMethod addOrUniqueMethod = context.getMetaAccess().lookupJavaMethod(ADD_OR_UNIQUE);
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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.equals(addOrUniqueMethod)) {
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ValueNode nodeArgument = t.arguments().get(1);
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EconomicSet<Node> seen = EconomicSet.create();
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checkNonFactory(graph, seen, context, nodeArgument);
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}
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}
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}
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}
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private void checkNonFactory(StructuredGraph graph, EconomicSet<Node> seen, CoreProviders context, ValueNode node) {
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if (seen.contains(node)) {
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return;
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}
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seen.add(node);
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// Check where the value came from recursively, or if it is allowed.
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if (node instanceof ValuePhiNode) {
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for (ValueNode input : ((ValuePhiNode) node).values()) {
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checkNonFactory(graph, seen, context, input);
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}
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} else if (node instanceof PiNode) {
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checkNonFactory(graph, seen, context, ((PiNode) node).object());
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} else if (node instanceof ParameterNode) {
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return;
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} else if (node instanceof ConstantNode) {
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return;
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} else if (node instanceof ValueProxyNode) {
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checkNonFactory(graph, seen, context, ((ValueProxyNode) node).value());
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} else if (node instanceof Invoke && ((Invoke) node).callTarget().targetMethod().equals(context.getMetaAccess().lookupJavaMethod(CONSTRUCTOR_NEW_INSTANCE))) {
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return;
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} else if (!(node instanceof NewInstanceNode)) {
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// In all other cases, the argument must be a new instance.
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throw new VerificationError("Must add node '%s' with inputs in method '%s' of class '%s'.",
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node, graph.method().getName(), graph.method().getDeclaringClass().getName());
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}
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}
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}
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