1 /*
  2  * Copyright (c) 1997, 2019, 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_OPTO_CONNODE_HPP
 26 #define SHARE_OPTO_CONNODE_HPP
 27 
 28 #include "opto/node.hpp"
 29 #include "opto/opcodes.hpp"
 30 #include "opto/type.hpp"
 31 
 32 class PhaseTransform;
 33 class MachNode;
 34 
 35 //------------------------------ConNode----------------------------------------
 36 // Simple constants
 37 class ConNode : public TypeNode {
 38 public:
 39   ConNode( const Type *t ) : TypeNode(t->remove_speculative(),1) {
 40     init_req(0, (Node*)Compile::current()->root());
 41     init_flags(Flag_is_Con);
 42   }
 43   virtual int  Opcode() const;
 44   virtual uint hash() const;
 45   virtual const RegMask &out_RegMask() const { return RegMask::Empty; }
 46   virtual const RegMask &in_RegMask(uint) const { return RegMask::Empty; }
 47 
 48   // Polymorphic factory method:
 49   static ConNode* make(const Type *t);
 50 };
 51 
 52 //------------------------------ConINode---------------------------------------
 53 // Simple integer constants
 54 class ConINode : public ConNode {
 55 public:
 56   ConINode( const TypeInt *t ) : ConNode(t) {}
 57   virtual int Opcode() const;
 58 
 59   // Factory method:
 60   static ConINode* make(int con) {
 61     return new ConINode( TypeInt::make(con) );
 62   }
 63 
 64 };
 65 
 66 //------------------------------ConPNode---------------------------------------
 67 // Simple pointer constants
 68 class ConPNode : public ConNode {
 69 public:
 70   ConPNode( const TypePtr *t ) : ConNode(t) {}
 71   virtual int Opcode() const;
 72 
 73   // Factory methods:
 74   static ConPNode* make(address con) {
 75     if (con == NULL)
 76       return new ConPNode( TypePtr::NULL_PTR ) ;
 77     else
 78       return new ConPNode( TypeRawPtr::make(con) );
 79   }
 80 };
 81 
 82 
 83 //------------------------------ConNNode--------------------------------------
 84 // Simple narrow oop constants
 85 class ConNNode : public ConNode {
 86 public:
 87   ConNNode( const TypeNarrowOop *t ) : ConNode(t) {}
 88   virtual int Opcode() const;
 89 };
 90 
 91 //------------------------------ConNKlassNode---------------------------------
 92 // Simple narrow klass constants
 93 class ConNKlassNode : public ConNode {
 94 public:
 95   ConNKlassNode( const TypeNarrowKlass *t ) : ConNode(t) {}
 96   virtual int Opcode() const;
 97 };
 98 
 99 
100 //------------------------------ConLNode---------------------------------------
101 // Simple long constants
102 class ConLNode : public ConNode {
103 public:
104   ConLNode( const TypeLong *t ) : ConNode(t) {}
105   virtual int Opcode() const;
106 
107   // Factory method:
108   static ConLNode* make(jlong con) {
109     return new ConLNode( TypeLong::make(con) );
110   }
111 
112 };
113 
114 //------------------------------ConFNode---------------------------------------
115 // Simple float constants
116 class ConFNode : public ConNode {
117 public:
118   ConFNode( const TypeF *t ) : ConNode(t) {}
119   virtual int Opcode() const;
120 
121   // Factory method:
122   static ConFNode* make(float con) {
123     return new ConFNode( TypeF::make(con) );
124   }
125 
126 };
127 
128 //------------------------------ConDNode---------------------------------------
129 // Simple double constants
130 class ConDNode : public ConNode {
131 public:
132   ConDNode( const TypeD *t ) : ConNode(t) {}
133   virtual int Opcode() const;
134 
135   // Factory method:
136   static ConDNode* make(double con) {
137     return new ConDNode( TypeD::make(con) );
138   }
139 
140 };
141 
142 //------------------------------ThreadLocalNode--------------------------------
143 // Ideal Node which returns the base of ThreadLocalStorage.
144 class ThreadLocalNode : public Node {
145 public:
146     ThreadLocalNode( ) : Node((Node*)Compile::current()->root()) {}
147     virtual int Opcode() const;
148     virtual const Type *bottom_type() const { return TypeRawPtr::BOTTOM;}
149     virtual uint ideal_reg() const { return Op_RegP; }
150 };
151 
152 
153 
154 #endif // SHARE_OPTO_CONNODE_HPP