/*

 * Copyright (c) 1997, 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

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 */

#ifndef SHARE_VM_OPTO_CONNODE_HPP

#define SHARE_VM_OPTO_CONNODE_HPP

#include "opto/node.hpp"

#include "opto/opcodes.hpp"

#include "opto/type.hpp"

class PhaseTransform;

class MachNode;

//------------------------------ConNode----------------------------------------

// Simple constants

class ConNode : public TypeNode {

public:

  ConNode( const Type *t ) : TypeNode(t->remove_speculative(),1) {

    init_req(0, (Node*)Compile::current()->root());

    init_flags(Flag_is_Con);

  }

  virtual int  Opcode() const;

  virtual uint hash() const;

  virtual const RegMask &out_RegMask() const { return RegMask::Empty; }

  virtual const RegMask &in_RegMask(uint) const { return RegMask::Empty; }

  // Polymorphic factory method:

  static ConNode* make(const Type *t);

};

//------------------------------ConINode---------------------------------------

// Simple integer constants

class ConINode : public ConNode {

public:

  ConINode( const TypeInt *t ) : ConNode(t) {}

  virtual int Opcode() const;

  // Factory method:

  static ConINode* make(int con) {

    return new ConINode( TypeInt::make(con) );

  }

};

//------------------------------ConPNode---------------------------------------

// Simple pointer constants

class ConPNode : public ConNode {

public:

  ConPNode( const TypePtr *t ) : ConNode(t) {}

  virtual int Opcode() const;

  // Factory methods:

  static ConPNode* make(address con) {

    if (con == NULL)

      return new ConPNode( TypePtr::NULL_PTR ) ;

    else

      return new ConPNode( TypeRawPtr::make(con) );

  }

};

//------------------------------ConNNode--------------------------------------

// Simple narrow oop constants

class ConNNode : public ConNode {

public:

  ConNNode( const TypeNarrowOop *t ) : ConNode(t) {}

  virtual int Opcode() const;

};

//------------------------------ConNKlassNode---------------------------------

// Simple narrow klass constants

class ConNKlassNode : public ConNode {

public:

  ConNKlassNode( const TypeNarrowKlass *t ) : ConNode(t) {}

  virtual int Opcode() const;

};

//------------------------------ConLNode---------------------------------------

// Simple long constants

class ConLNode : public ConNode {

public:

  ConLNode( const TypeLong *t ) : ConNode(t) {}

  virtual int Opcode() const;

  // Factory method:

  static ConLNode* make(jlong con) {

    return new ConLNode( TypeLong::make(con) );

  }

};

//------------------------------ConFNode---------------------------------------

// Simple float constants

class ConFNode : public ConNode {

public:

  ConFNode( const TypeF *t ) : ConNode(t) {}

  virtual int Opcode() const;

  // Factory method:

  static ConFNode* make(float con) {

    return new ConFNode( TypeF::make(con) );

  }

};

//------------------------------ConDNode---------------------------------------

// Simple double constants

class ConDNode : public ConNode {

public:

  ConDNode( const TypeD *t ) : ConNode(t) {}

  virtual int Opcode() const;

  // Factory method:

  static ConDNode* make(double con) {

    return new ConDNode( TypeD::make(con) );

  }

};

//------------------------------ThreadLocalNode--------------------------------

// Ideal Node which returns the base of ThreadLocalStorage.

class ThreadLocalNode : public Node {

public:

    ThreadLocalNode( ) : Node((Node*)Compile::current()->root()) {}

    virtual int Opcode() const;

    virtual const Type *bottom_type() const { return TypeRawPtr::BOTTOM;}

    virtual uint ideal_reg() const { return Op_RegP; }

};

#endif // SHARE_VM_OPTO_CONNODE_HPP