/*

 * Copyright (c) 2013, 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_MATHEXACTNODE_HPP

#define SHARE_VM_OPTO_MATHEXACTNODE_HPP

#include "opto/multnode.hpp"

#include "opto/node.hpp"

#include "opto/subnode.hpp"

#include "opto/type.hpp"

class BoolNode;

class IfNode;

class Node;

class PhaseGVN;

class PhaseTransform;

class MathExactNode : public MultiNode {

public:

  MathExactNode(Node* ctrl, Node* in1);

  MathExactNode(Node* ctrl, Node* in1, Node* in2);

  enum {

    result_proj_node = 0,

    flags_proj_node = 1

  };

  virtual int Opcode() const;

  virtual Node* Identity(PhaseTransform* phase) { return this; }

  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape) { return NULL; }

  virtual const Type* Value(PhaseTransform* phase) const { return bottom_type(); }

  virtual uint hash() const { return NO_HASH; }

  virtual bool is_CFG() const { return false; }

  virtual uint ideal_reg() const { return NotAMachineReg; }

  ProjNode* result_node() const { return proj_out(result_proj_node); }

  ProjNode* flags_node() const { return proj_out(flags_proj_node); }

  Node* control_node() const;

  Node* non_throwing_branch() const;

protected:

  IfNode* if_node() const;

  BoolNode* bool_node() const;

  Node* no_overflow(PhaseGVN *phase, Node* new_result);

};

class MathExactINode : public MathExactNode {

 public:

  MathExactINode(Node* ctrl, Node* in1) : MathExactNode(ctrl, in1) {}

  MathExactINode(Node* ctrl, Node* in1, Node* in2) : MathExactNode(ctrl, in1, in2) {}

  virtual int Opcode() const;

  virtual Node* match(const ProjNode* proj, const Matcher* m);

  virtual const Type* bottom_type() const { return TypeTuple::INT_CC_PAIR; }

};

class MathExactLNode : public MathExactNode {

public:

  MathExactLNode(Node* ctrl, Node* in1) : MathExactNode(ctrl, in1) {}

  MathExactLNode(Node* ctrl, Node* in1, Node* in2) : MathExactNode(ctrl, in1, in2) {}

  virtual int Opcode() const;

  virtual Node* match(const ProjNode* proj, const Matcher* m);

  virtual const Type* bottom_type() const { return TypeTuple::LONG_CC_PAIR; }

};

class AddExactINode : public MathExactINode {

public:

  AddExactINode(Node* ctrl, Node* in1, Node* in2) : MathExactINode(ctrl, in1, in2) {}

  virtual int Opcode() const;

  virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);

};

class AddExactLNode : public MathExactLNode {

public:

  AddExactLNode(Node* ctrl, Node* in1, Node* in2) : MathExactLNode(ctrl, in1, in2) {}

  virtual int Opcode() const;

  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);

};

class SubExactINode : public MathExactINode {

public:

  SubExactINode(Node* ctrl, Node* in1, Node* in2) : MathExactINode(ctrl, in1, in2) {}

  virtual int Opcode() const;

  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);

};

class SubExactLNode : public MathExactLNode {

public:

  SubExactLNode(Node* ctrl, Node* in1, Node* in2) : MathExactLNode(ctrl, in1, in2) {}

  virtual int Opcode() const;

  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);

};

class NegExactINode : public MathExactINode {

public:

  NegExactINode(Node* ctrl, Node* in1) : MathExactINode(ctrl, in1) {}

  virtual int Opcode() const;

  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);

};

class NegExactLNode : public MathExactLNode {

public:

  NegExactLNode(Node* ctrl, Node* in1) : MathExactLNode(ctrl, in1) {}

  virtual int Opcode() const;

  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);

};

class MulExactINode : public MathExactINode {

public:

  MulExactINode(Node* ctrl, Node* in1, Node* in2) : MathExactINode(ctrl, in1, in2) {}

  virtual int Opcode() const;

  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);

};

class MulExactLNode : public MathExactLNode {

public:

  MulExactLNode(Node* ctrl, Node* in1, Node* in2) : MathExactLNode(ctrl, in1, in2) {}

  virtual int Opcode() const;

  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);

};

class FlagsProjNode : public ProjNode {

public:

  FlagsProjNode(Node* src, uint con) : ProjNode(src, con) {

    init_class_id(Class_FlagsProj);

  }

  virtual int Opcode() const;

  virtual bool is_CFG() const { return false; }

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

  virtual uint ideal_reg() const { return Op_RegFlags; }

};

#endif