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/*
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* Copyright (c) 2013, 2016, 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.replacements.nodes;
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import org.graalvm.compiler.core.common.type.StampPair;
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import org.graalvm.compiler.debug.GraalError;
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import org.graalvm.compiler.graph.NodeClass;
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import org.graalvm.compiler.nodeinfo.InputType;
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import org.graalvm.compiler.nodeinfo.NodeInfo;
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import org.graalvm.compiler.nodes.CallTargetNode.InvokeKind;
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import org.graalvm.compiler.nodes.FrameState;
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import org.graalvm.compiler.nodes.Invoke;
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import org.graalvm.compiler.nodes.InvokeNode;
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import org.graalvm.compiler.nodes.StateSplit;
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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.java.MethodCallTargetNode;
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import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
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import jdk.internal.vm.compiler.word.LocationIdentity;
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import jdk.vm.ci.code.BytecodeFrame;
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import jdk.vm.ci.meta.ResolvedJavaMethod;
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/**
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* This is an extension of {@link MacroNode} that is a {@link StateSplit} and a
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* {@link MemoryCheckpoint}.
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*/
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@NodeInfo
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public abstract class MacroStateSplitNode extends MacroNode implements StateSplit, MemoryCheckpoint.Single {
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public static final NodeClass<MacroStateSplitNode> TYPE = NodeClass.create(MacroStateSplitNode.class);
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@OptionalInput(InputType.State) protected FrameState stateAfter;
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protected MacroStateSplitNode(NodeClass<? extends MacroNode> c, InvokeKind invokeKind, ResolvedJavaMethod targetMethod, int bci, StampPair returnStamp, ValueNode... arguments) {
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super(c, invokeKind, targetMethod, bci, returnStamp, arguments);
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}
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@Override
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public FrameState stateAfter() {
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return stateAfter;
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}
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@Override
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public void setStateAfter(FrameState x) {
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assert x == null || x.isAlive() : "frame state must be in a graph";
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updateUsages(stateAfter, x);
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stateAfter = x;
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}
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@Override
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public boolean hasSideEffect() {
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return true;
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}
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@Override
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public LocationIdentity getLocationIdentity() {
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return LocationIdentity.any();
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}
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protected void replaceSnippetInvokes(StructuredGraph snippetGraph) {
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for (MethodCallTargetNode call : snippetGraph.getNodes(MethodCallTargetNode.TYPE)) {
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Invoke invoke = call.invoke();
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if (!call.targetMethod().equals(getTargetMethod())) {
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throw new GraalError("unexpected invoke %s in snippet", getClass().getSimpleName());
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}
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assert invoke.stateAfter().bci == BytecodeFrame.AFTER_BCI;
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// Here we need to fix the bci of the invoke
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InvokeNode newInvoke = snippetGraph.add(new InvokeNode(invoke.callTarget(), bci()));
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newInvoke.setStateAfter(invoke.stateAfter());
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snippetGraph.replaceFixedWithFixed((InvokeNode) invoke.asNode(), newInvoke);
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}
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}
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}
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