InvokeNode.java example

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/*
 * Copyright (c) 2009, 2011, 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
 * questions.
 */
package com.oracle.max.graal.nodes;

import java.util.*;

import com.oracle.max.graal.graph.*;
import com.oracle.max.graal.nodes.calc.*;
import com.oracle.max.graal.nodes.extended.*;
import com.oracle.max.graal.nodes.java.*;
import com.oracle.max.graal.nodes.spi.*;
import com.sun.cri.ci.*;

/**
 * The {@code InvokeNode} represents all kinds of method calls.
 */
public final class InvokeNode extends AbstractStateSplit implements Node.IterableNodeType, Invoke, LIRLowerable, MemoryCheckpoint  {

    @Input private final MethodCallTargetNode callTarget;
    private final int bci;

    /**
     * Constructs a new Invoke instruction.
     *
     * @param bci the bytecode index of the original invoke (used for debug infos)
     * @param opcode the opcode of the invoke
     * @param target the target method being called
     * @param args the list of instructions producing arguments to the invocation, including the receiver object
     */
    public InvokeNode(MethodCallTargetNode callTarget, int bci) {
        super(callTarget.returnStamp());
        assert callTarget != null;
        this.callTarget = callTarget;
        this.bci = bci;
    }

    public MethodCallTargetNode callTarget() {
        return callTarget;
    }

    @Override
    public Map<Object, Object> getDebugProperties() {
        Map<Object, Object> debugProperties = super.getDebugProperties();
        debugProperties.put("targetMethod", CiUtil.format("%h.%n(%p)", callTarget.targetMethod()));
        return debugProperties;
    }

    @Override
    public void generate(LIRGeneratorTool gen) {
        gen.emitInvoke(this);
    }

    @Override
    public String toString(Verbosity verbosity) {
        if (verbosity == Verbosity.Long) {
            return super.toString(Verbosity.Short) + "(bci=" + bci() + ")";
        } else if (verbosity == Verbosity.Name) {
            return "Invoke#" + callTarget.targetMethod().name();
        } else {
            return super.toString(verbosity);
        }
    }

    public int bci() {
        return bci;
    }

    @Override
    public FixedNode node() {
        return this;
    }

    @Override
    public FrameState stateDuring() {
        FrameState stateAfter = stateAfter();
        return stateAfter.duplicateModified(bci(), stateAfter.rethrowException(), this.callTarget.targetMethod().signature().returnKind(false));
    }

    @Override
    public void intrinsify(Node node) {
        this.callTarget.delete();
        if (node instanceof StateSplit) {
            StateSplit stateSplit = (StateSplit) node;
            stateSplit.setStateAfter(stateAfter());
        } else {
            if (stateAfter().usages().size() == 1) {
                stateAfter().delete();
            }
        }
        if (node instanceof FixedWithNextNode) {
            FixedWithNextNode fixedWithNextNode = (FixedWithNextNode) node;
            FixedNode next = this.next();
            setNext(null);
            fixedWithNextNode.setNext(next);
            this.replaceAndDelete(node);
        } else if (node instanceof FloatingNode || (node == null && this.kind() == CiKind.Void)) {
            FixedNode next = this.next();
            setNext(null);
            this.replaceAtPredecessors(next);
            this.replaceAtUsages(node);
            this.safeDelete();
        }
    }
}