hotspot/src/share/vm/opto/convertnode.hpp
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     1 /*
       
     2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
       
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
       
     4  *
       
     5  * This code is free software; you can redistribute it and/or modify it
       
     6  * under the terms of the GNU General Public License version 2 only, as
       
     7  * published by the Free Software Foundation.
       
     8  *
       
     9  * This code is distributed in the hope that it will be useful, but WITHOUT
       
    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
       
    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
       
    12  * version 2 for more details (a copy is included in the LICENSE file that
       
    13  * accompanied this code).
       
    14  *
       
    15  * You should have received a copy of the GNU General Public License version
       
    16  * 2 along with this work; if not, write to the Free Software Foundation,
       
    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
       
    18  *
       
    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
       
    20  * or visit www.oracle.com if you need additional information or have any
       
    21  * questions.
       
    22  *
       
    23  */
       
    24 
       
    25 #ifndef SHARE_VM_OPTO_CONVERTNODE_HPP
       
    26 #define SHARE_VM_OPTO_CONVERTNODE_HPP
       
    27 
       
    28 #include "opto/node.hpp"
       
    29 #include "opto/opcodes.hpp"
       
    30 
       
    31 
       
    32 //------------------------------Conv2BNode-------------------------------------
       
    33 // Convert int/pointer to a Boolean.  Map zero to zero, all else to 1.
       
    34 class Conv2BNode : public Node {
       
    35   public:
       
    36   Conv2BNode( Node *i ) : Node(0,i) {}
       
    37   virtual int Opcode() const;
       
    38   virtual const Type *bottom_type() const { return TypeInt::BOOL; }
       
    39   virtual Node *Identity( PhaseTransform *phase );
       
    40   virtual const Type *Value( PhaseTransform *phase ) const;
       
    41   virtual uint  ideal_reg() const { return Op_RegI; }
       
    42 };
       
    43 
       
    44 // The conversions operations are all Alpha sorted.  Please keep it that way!
       
    45 //------------------------------ConvD2FNode------------------------------------
       
    46 // Convert double to float
       
    47 class ConvD2FNode : public Node {
       
    48   public:
       
    49   ConvD2FNode( Node *in1 ) : Node(0,in1) {}
       
    50   virtual int Opcode() const;
       
    51   virtual const Type *bottom_type() const { return Type::FLOAT; }
       
    52   virtual const Type *Value( PhaseTransform *phase ) const;
       
    53   virtual Node *Identity( PhaseTransform *phase );
       
    54   virtual uint  ideal_reg() const { return Op_RegF; }
       
    55 };
       
    56 
       
    57 //------------------------------ConvD2INode------------------------------------
       
    58 // Convert Double to Integer
       
    59 class ConvD2INode : public Node {
       
    60   public:
       
    61   ConvD2INode( Node *in1 ) : Node(0,in1) {}
       
    62   virtual int Opcode() const;
       
    63   virtual const Type *bottom_type() const { return TypeInt::INT; }
       
    64   virtual const Type *Value( PhaseTransform *phase ) const;
       
    65   virtual Node *Identity( PhaseTransform *phase );
       
    66   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
       
    67   virtual uint  ideal_reg() const { return Op_RegI; }
       
    68 };
       
    69 
       
    70 //------------------------------ConvD2LNode------------------------------------
       
    71 // Convert Double to Long
       
    72 class ConvD2LNode : public Node {
       
    73   public:
       
    74   ConvD2LNode( Node *dbl ) : Node(0,dbl) {}
       
    75   virtual int Opcode() const;
       
    76   virtual const Type *bottom_type() const { return TypeLong::LONG; }
       
    77   virtual const Type *Value( PhaseTransform *phase ) const;
       
    78   virtual Node *Identity( PhaseTransform *phase );
       
    79   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
       
    80   virtual uint ideal_reg() const { return Op_RegL; }
       
    81 };
       
    82 
       
    83 //------------------------------ConvF2DNode------------------------------------
       
    84 // Convert Float to a Double.
       
    85 class ConvF2DNode : public Node {
       
    86   public:
       
    87   ConvF2DNode( Node *in1 ) : Node(0,in1) {}
       
    88   virtual int Opcode() const;
       
    89   virtual const Type *bottom_type() const { return Type::DOUBLE; }
       
    90   virtual const Type *Value( PhaseTransform *phase ) const;
       
    91   virtual uint  ideal_reg() const { return Op_RegD; }
       
    92 };
       
    93 
       
    94 //------------------------------ConvF2INode------------------------------------
       
    95 // Convert float to integer
       
    96 class ConvF2INode : public Node {
       
    97   public:
       
    98   ConvF2INode( Node *in1 ) : Node(0,in1) {}
       
    99   virtual int Opcode() const;
       
   100   virtual const Type *bottom_type() const { return TypeInt::INT; }
       
   101   virtual const Type *Value( PhaseTransform *phase ) const;
       
   102   virtual Node *Identity( PhaseTransform *phase );
       
   103   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
       
   104   virtual uint  ideal_reg() const { return Op_RegI; }
       
   105 };
       
   106 
       
   107 //------------------------------ConvF2LNode------------------------------------
       
   108 // Convert float to long
       
   109 class ConvF2LNode : public Node {
       
   110   public:
       
   111   ConvF2LNode( Node *in1 ) : Node(0,in1) {}
       
   112   virtual int Opcode() const;
       
   113   virtual const Type *bottom_type() const { return TypeLong::LONG; }
       
   114   virtual const Type *Value( PhaseTransform *phase ) const;
       
   115   virtual Node *Identity( PhaseTransform *phase );
       
   116   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
       
   117   virtual uint  ideal_reg() const { return Op_RegL; }
       
   118 };
       
   119 
       
   120 //------------------------------ConvI2DNode------------------------------------
       
   121 // Convert Integer to Double
       
   122 class ConvI2DNode : public Node {
       
   123   public:
       
   124   ConvI2DNode( Node *in1 ) : Node(0,in1) {}
       
   125   virtual int Opcode() const;
       
   126   virtual const Type *bottom_type() const { return Type::DOUBLE; }
       
   127   virtual const Type *Value( PhaseTransform *phase ) const;
       
   128   virtual uint  ideal_reg() const { return Op_RegD; }
       
   129 };
       
   130 
       
   131 //------------------------------ConvI2FNode------------------------------------
       
   132 // Convert Integer to Float
       
   133 class ConvI2FNode : public Node {
       
   134   public:
       
   135   ConvI2FNode( Node *in1 ) : Node(0,in1) {}
       
   136   virtual int Opcode() const;
       
   137   virtual const Type *bottom_type() const { return Type::FLOAT; }
       
   138   virtual const Type *Value( PhaseTransform *phase ) const;
       
   139   virtual Node *Identity( PhaseTransform *phase );
       
   140   virtual uint  ideal_reg() const { return Op_RegF; }
       
   141 };
       
   142 
       
   143 //------------------------------ConvI2LNode------------------------------------
       
   144 // Convert integer to long
       
   145 class ConvI2LNode : public TypeNode {
       
   146   public:
       
   147   ConvI2LNode(Node *in1, const TypeLong* t = TypeLong::INT)
       
   148   : TypeNode(t, 2)
       
   149   { init_req(1, in1); }
       
   150   virtual int Opcode() const;
       
   151   virtual const Type *Value( PhaseTransform *phase ) const;
       
   152   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
       
   153   virtual uint  ideal_reg() const { return Op_RegL; }
       
   154 };
       
   155 
       
   156 //------------------------------ConvL2DNode------------------------------------
       
   157 // Convert Long to Double
       
   158 class ConvL2DNode : public Node {
       
   159   public:
       
   160   ConvL2DNode( Node *in1 ) : Node(0,in1) {}
       
   161   virtual int Opcode() const;
       
   162   virtual const Type *bottom_type() const { return Type::DOUBLE; }
       
   163   virtual const Type *Value( PhaseTransform *phase ) const;
       
   164   virtual uint ideal_reg() const { return Op_RegD; }
       
   165 };
       
   166 
       
   167 //------------------------------ConvL2FNode------------------------------------
       
   168 // Convert Long to Float
       
   169 class ConvL2FNode : public Node {
       
   170   public:
       
   171   ConvL2FNode( Node *in1 ) : Node(0,in1) {}
       
   172   virtual int Opcode() const;
       
   173   virtual const Type *bottom_type() const { return Type::FLOAT; }
       
   174   virtual const Type *Value( PhaseTransform *phase ) const;
       
   175   virtual uint  ideal_reg() const { return Op_RegF; }
       
   176 };
       
   177 
       
   178 //------------------------------ConvL2INode------------------------------------
       
   179 // Convert long to integer
       
   180 class ConvL2INode : public Node {
       
   181   public:
       
   182   ConvL2INode( Node *in1 ) : Node(0,in1) {}
       
   183   virtual int Opcode() const;
       
   184   virtual const Type *bottom_type() const { return TypeInt::INT; }
       
   185   virtual Node *Identity( PhaseTransform *phase );
       
   186   virtual const Type *Value( PhaseTransform *phase ) const;
       
   187   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
       
   188   virtual uint  ideal_reg() const { return Op_RegI; }
       
   189 };
       
   190 
       
   191 //-----------------------------RoundFloatNode----------------------------------
       
   192 class RoundFloatNode: public Node {
       
   193   public:
       
   194   RoundFloatNode(Node* c, Node *in1): Node(c, in1) {}
       
   195   virtual int   Opcode() const;
       
   196   virtual const Type *bottom_type() const { return Type::FLOAT; }
       
   197   virtual uint  ideal_reg() const { return Op_RegF; }
       
   198   virtual Node *Identity( PhaseTransform *phase );
       
   199   virtual const Type *Value( PhaseTransform *phase ) const;
       
   200 };
       
   201 
       
   202 
       
   203 //-----------------------------RoundDoubleNode---------------------------------
       
   204 class RoundDoubleNode: public Node {
       
   205   public:
       
   206   RoundDoubleNode(Node* c, Node *in1): Node(c, in1) {}
       
   207   virtual int   Opcode() const;
       
   208   virtual const Type *bottom_type() const { return Type::DOUBLE; }
       
   209   virtual uint  ideal_reg() const { return Op_RegD; }
       
   210   virtual Node *Identity( PhaseTransform *phase );
       
   211   virtual const Type *Value( PhaseTransform *phase ) const;
       
   212 };
       
   213 
       
   214 
       
   215 #endif // SHARE_VM_OPTO_CONVERTNODE_HPP