001/*
002 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.replacements.nodes;
024
025import jdk.internal.jvmci.meta.*;
026
027import com.oracle.graal.graph.*;
028import com.oracle.graal.nodeinfo.*;
029import com.oracle.graal.nodes.CallTargetNode.InvokeKind;
030import com.oracle.graal.nodes.*;
031import com.oracle.graal.nodes.spi.*;
032import com.oracle.graal.nodes.virtual.*;
033
034/**
035 * A helper class to allow elimination of byte code instrumentation that could interfere with escape
036 * analysis.
037 */
038@NodeInfo
039public class VirtualizableInvokeMacroNode extends MacroStateSplitNode implements Virtualizable {
040
041    public static final NodeClass<VirtualizableInvokeMacroNode> TYPE = NodeClass.create(VirtualizableInvokeMacroNode.class);
042
043    public VirtualizableInvokeMacroNode(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, int bci, JavaType returnType, ValueNode... arguments) {
044        super(TYPE, invokeKind, targetMethod, bci, returnType, arguments);
045    }
046
047    @Override
048    public void virtualize(VirtualizerTool tool) {
049        for (ValueNode arg : arguments) {
050            ValueNode alias = tool.getAlias(arg);
051            if (alias instanceof VirtualObjectNode) {
052                tool.delete();
053            }
054        }
055    }
056}