/*
 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
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 */
package com.oracle.graal.hotspot.replacements;

import static com.oracle.graal.compiler.common.GraalOptions.*;

import com.oracle.graal.api.meta.*;
import com.oracle.graal.graph.*;
import com.oracle.graal.hotspot.jvmci.*;
import com.oracle.graal.nodeinfo.*;
import com.oracle.graal.nodes.CallTargetNode.InvokeKind;
import com.oracle.graal.nodes.*;
import com.oracle.graal.replacements.nodes.*;

@NodeInfo
public final class IdentityHashCodeNode extends PureFunctionMacroNode {

    public static final NodeClass<IdentityHashCodeNode> TYPE = NodeClass.create(IdentityHashCodeNode.class);

    public IdentityHashCodeNode(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, int bci, JavaType returnType, ValueNode object) {
        super(TYPE, invokeKind, targetMethod, bci, returnType, object);
    }

    @Override
    protected JavaConstant evaluate(JavaConstant param, MetaAccessProvider metaAccess) {
        if (ImmutableCode.getValue() || param.isNull()) {
            return null;
        }
        HotSpotObjectConstant c = (HotSpotObjectConstant) param;
        return JavaConstant.forInt(c.getIdentityHashCode());
    }
}