JDK14/Java14源码在线阅读

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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
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 *
 * 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.
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#ifndef SHARE_OPTO_CONVERTNODE_HPP
#define SHARE_OPTO_CONVERTNODE_HPP

#include "opto/node.hpp"
#include "opto/opcodes.hpp"


//------------------------------Conv2BNode-------------------------------------
// Convert int/pointer to a Boolean.  Map zero to zero, all else to 1.
class Conv2BNode : public Node {
  public:
  Conv2BNode( Node *i ) : Node(0,i) {}
  virtual int Opcode() const;
  virtual const Type *bottom_type() const { return TypeInt::BOOL; }
  virtual Node* Identity(PhaseGVN* phase);
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual uint  ideal_reg() const { return Op_RegI; }
};

// The conversions operations are all Alpha sorted.  Please keep it that way!
//------------------------------ConvD2FNode------------------------------------
// Convert double to float
class ConvD2FNode : public Node {
  public:
  ConvD2FNode( Node *in1 ) : Node(0,in1) {}
  virtual int Opcode() const;
  virtual const Type *bottom_type() const { return Type::FLOAT; }
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual Node* Identity(PhaseGVN* phase);
  virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
  virtual uint  ideal_reg() const { return Op_RegF; }
};

//------------------------------ConvD2INode------------------------------------
// Convert Double to Integer
class ConvD2INode : public Node {
  public:
  ConvD2INode( Node *in1 ) : Node(0,in1) {}
  virtual int Opcode() const;
  virtual const Type *bottom_type() const { return TypeInt::INT; }
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual Node* Identity(PhaseGVN* phase);
  virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
  virtual uint  ideal_reg() const { return Op_RegI; }
};

//------------------------------ConvD2LNode------------------------------------
// Convert Double to Long
class ConvD2LNode : public Node {
  public:
  ConvD2LNode( Node *dbl ) : Node(0,dbl) {}
  virtual int Opcode() const;
  virtual const Type *bottom_type() const { return TypeLong::LONG; }
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual Node* Identity(PhaseGVN* phase);
  virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
  virtual uint ideal_reg() const { return Op_RegL; }
};

//------------------------------ConvF2DNode------------------------------------
// Convert Float to a Double.
class ConvF2DNode : public Node {
  public:
  ConvF2DNode( Node *in1 ) : Node(0,in1) {}
  virtual int Opcode() const;
  virtual const Type *bottom_type() const { return Type::DOUBLE; }
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual uint  ideal_reg() const { return Op_RegD; }
};

//------------------------------ConvF2INode------------------------------------
// Convert float to integer
class ConvF2INode : public Node {
  public:
  ConvF2INode( Node *in1 ) : Node(0,in1) {}
  virtual int Opcode() const;
  virtual const Type *bottom_type() const { return TypeInt::INT; }
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual Node* Identity(PhaseGVN* phase);
  virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
  virtual uint  ideal_reg() const { return Op_RegI; }
};

//------------------------------ConvF2LNode------------------------------------
// Convert float to long
class ConvF2LNode : public Node {
  public:
  ConvF2LNode( Node *in1 ) : Node(0,in1) {}
  virtual int Opcode() const;
  virtual const Type *bottom_type() const { return TypeLong::LONG; }
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual Node* Identity(PhaseGVN* phase);
  virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
  virtual uint  ideal_reg() const { return Op_RegL; }
};

//------------------------------ConvI2DNode------------------------------------
// Convert Integer to Double
class ConvI2DNode : public Node {
  public:
  ConvI2DNode( Node *in1 ) : Node(0,in1) {}
  virtual int Opcode() const;
  virtual const Type *bottom_type() const { return Type::DOUBLE; }
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual uint  ideal_reg() const { return Op_RegD; }
};

//------------------------------ConvI2FNode------------------------------------
// Convert Integer to Float
class ConvI2FNode : public Node {
  public:
  ConvI2FNode( Node *in1 ) : Node(0,in1) {}
  virtual int Opcode() const;
  virtual const Type *bottom_type() const { return Type::FLOAT; }
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual Node* Identity(PhaseGVN* phase);
  virtual uint  ideal_reg() const { return Op_RegF; }
};

//------------------------------ConvI2LNode------------------------------------
// Convert integer to long
class ConvI2LNode : public TypeNode {
  public:
  ConvI2LNode(Node *in1, const TypeLong* t = TypeLong::INT)
  : TypeNode(t, 2)
  { init_req(1, in1); }
  virtual int Opcode() const;
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
  virtual uint  ideal_reg() const { return Op_RegL; }
};

//------------------------------ConvL2DNode------------------------------------
// Convert Long to Double
class ConvL2DNode : public Node {
  public:
  ConvL2DNode( Node *in1 ) : Node(0,in1) {}
  virtual int Opcode() const;
  virtual const Type *bottom_type() const { return Type::DOUBLE; }
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual uint ideal_reg() const { return Op_RegD; }
};

//------------------------------ConvL2FNode------------------------------------
// Convert Long to Float
class ConvL2FNode : public Node {
  public:
  ConvL2FNode( Node *in1 ) : Node(0,in1) {}
  virtual int Opcode() const;
  virtual const Type *bottom_type() const { return Type::FLOAT; }
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual uint  ideal_reg() const { return Op_RegF; }
};

//------------------------------ConvL2INode------------------------------------
// Convert long to integer
class ConvL2INode : public Node {
  public:
  ConvL2INode( Node *in1 ) : Node(0,in1) {}
  virtual int Opcode() const;
  virtual const Type *bottom_type() const { return TypeInt::INT; }
  virtual Node* Identity(PhaseGVN* phase);
  virtual const Type* Value(PhaseGVN* phase) const;
  virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
  virtual uint  ideal_reg() const { return Op_RegI; }
};

//-----------------------------RoundFloatNode----------------------------------
class RoundFloatNode: public Node {
  public:
  RoundFloatNode(Node* c, Node *in1): Node(c, in1) {}
  virtual int   Opcode() const;
  virtual const Type *bottom_type() const { return Type::FLOAT; }
  virtual uint  ideal_reg() const { return Op_RegF; }
  virtual Node* Identity(PhaseGVN* phase);
  virtual const Type* Value(PhaseGVN* phase) const;
};


//-----------------------------RoundDoubleNode---------------------------------
class RoundDoubleNode: public Node {
  public:
  RoundDoubleNode(Node* c, Node *in1): Node(c, in1) {}
  virtual int   Opcode() const;

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