/*

 * Copyright (c) 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef SHARE_VM_OPTO_COUNTBITSNODE_HPP

#define SHARE_VM_OPTO_COUNTBITSNODE_HPP

#include "opto/node.hpp"

#include "opto/opcodes.hpp"

class PhaseTransform;

//---------- CountBitsNode -----------------------------------------------------

class CountBitsNode : public Node {

  public:

  CountBitsNode(Node* in1) : Node(0, in1) {}

  const Type* bottom_type() const { return TypeInt::INT; }

  virtual uint ideal_reg() const { return Op_RegI; }

};

//---------- CountLeadingZerosINode --------------------------------------------

// Count leading zeros (0-bit count starting from MSB) of an integer.

class CountLeadingZerosINode : public CountBitsNode {

  public:

  CountLeadingZerosINode(Node* in1) : CountBitsNode(in1) {}

  virtual int Opcode() const;

  virtual const Type* Value(PhaseGVN* phase) const;

};

//---------- CountLeadingZerosLNode --------------------------------------------

// Count leading zeros (0-bit count starting from MSB) of a long.

class CountLeadingZerosLNode : public CountBitsNode {

  public:

  CountLeadingZerosLNode(Node* in1) : CountBitsNode(in1) {}

  virtual int Opcode() const;

  virtual const Type* Value(PhaseGVN* phase) const;

};

//---------- CountTrailingZerosINode -------------------------------------------

// Count trailing zeros (0-bit count starting from LSB) of an integer.

class CountTrailingZerosINode : public CountBitsNode {

  public:

  CountTrailingZerosINode(Node* in1) : CountBitsNode(in1) {}

  virtual int Opcode() const;

  virtual const Type* Value(PhaseGVN* phase) const;

};

//---------- CountTrailingZerosLNode -------------------------------------------

// Count trailing zeros (0-bit count starting from LSB) of a long.

class CountTrailingZerosLNode : public CountBitsNode {

  public:

  CountTrailingZerosLNode(Node* in1) : CountBitsNode(in1) {}

  virtual int Opcode() const;

  virtual const Type* Value(PhaseGVN* phase) const;

};

//---------- PopCountINode -----------------------------------------------------

// Population count (bit count) of an integer.

class PopCountINode : public CountBitsNode {

  public:

  PopCountINode(Node* in1) : CountBitsNode(in1) {}

  virtual int Opcode() const;

};

//---------- PopCountLNode -----------------------------------------------------

// Population count (bit count) of a long.

class PopCountLNode : public CountBitsNode {

  public:

  PopCountLNode(Node* in1) : CountBitsNode(in1) {}

  virtual int Opcode() const;

};

#endif // SHARE_VM_OPTO_COUNTBITSNODE_HPP