view graal/com.oracle.max.graal.examples/src/com/oracle/max/graal/examples/intrinsics/SafeAddNode.java @ 3519:16cee060c446

added NodeInfo annotation
author Lukas Stadler <lukas.stadler@jku.at>
date Tue, 09 Aug 2011 14:43:41 +0200
parents 9b59afa78775
children 6b841b6b2437
line wrap: on
line source

/*
 * Copyright (c) 2011, 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.examples.intrinsics;

import com.oracle.max.graal.compiler.gen.*;
import com.oracle.max.graal.compiler.ir.*;
import com.oracle.max.graal.graph.*;
import com.sun.cri.bytecode.*;
import com.sun.cri.ci.*;

@NodeInfo(shortName = "[+]")
public final class SafeAddNode extends IntegerArithmeticNode {
    public SafeAddNode(Value x, Value y, Graph graph) {
        super(CiKind.Int, Bytecodes.LADD, x, y, graph);
    }

    @SuppressWarnings("unchecked")
    @Override
    public <T extends Op> T lookup(Class<T> clazz) {
        if (clazz == LIRGenerator.LIRGeneratorOp.class) {
            return (T) GENERATOR_OP;
        }
        return super.lookup(clazz);
    }

    private static final LIRGenerator.LIRGeneratorOp GENERATOR_OP = new LIRGenerator.LIRGeneratorOp() {
        @Override
        public void generate(Node n, LIRGenerator generator) {
            SafeAddNode add = (SafeAddNode) n;
            generator.integerAdd(add, add.x(), add.y());
            generator.deoptimizeOn(Condition.OF);
        }
    };
}