/*
 * Copyright (c) 2009, 2014, 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
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 */
package com.oracle.graal.nodes.calc;

import com.oracle.graal.api.meta.*;
import com.oracle.graal.nodeinfo.*;
import com.oracle.graal.nodes.*;
import com.oracle.graal.nodes.spi.*;

/**
 * The {@code ShiftOp} class represents shift operations.
 */
@NodeInfo
public abstract class ShiftNode extends BinaryNode implements ArithmeticLIRLowerable {

    /**
     * Creates a new shift operation.
     *
     * @param x the first input value
     * @param s the second input value
     */
    public ShiftNode(ValueNode x, ValueNode s) {
        super(x.stamp().unrestricted(), x, s);
        assert s.getKind() == Kind.Int;
    }

    public int getShiftAmountMask() {
        int mask;
        if (getKind() == Kind.Int) {
            mask = 0x1f;
        } else {
            assert getKind() == Kind.Long;
            mask = 0x3f;
        }
        return mask;
    }
}