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annotate src/share/vm/opto/addnode.hpp @ 7788:dbbe8ce3bfa5
commands: accept 'server0' as a vm, accept version number which have '-...' suffix (-internal, -ea...)
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Wed, 13 Feb 2013 18:33:54 +0100 |
parents | f95d63e2154a |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
1552
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_OPTO_ADDNODE_HPP |
26 #define SHARE_VM_OPTO_ADDNODE_HPP | |
27 | |
28 #include "opto/node.hpp" | |
29 #include "opto/opcodes.hpp" | |
30 #include "opto/type.hpp" | |
31 | |
0 | 32 // Portions of code courtesy of Clifford Click |
33 | |
34 class PhaseTransform; | |
35 | |
36 //------------------------------AddNode---------------------------------------- | |
37 // Classic Add functionality. This covers all the usual 'add' behaviors for | |
38 // an algebraic ring. Add-integer, add-float, add-double, and binary-or are | |
39 // all inherited from this class. The various identity values are supplied | |
40 // by virtual functions. | |
41 class AddNode : public Node { | |
42 virtual uint hash() const; | |
43 public: | |
44 AddNode( Node *in1, Node *in2 ) : Node(0,in1,in2) { | |
45 init_class_id(Class_Add); | |
46 } | |
47 | |
48 // Handle algebraic identities here. If we have an identity, return the Node | |
49 // we are equivalent to. We look for "add of zero" as an identity. | |
50 virtual Node *Identity( PhaseTransform *phase ); | |
51 | |
52 // We also canonicalize the Node, moving constants to the right input, | |
53 // and flatten expressions (so that 1+x+2 becomes x+3). | |
54 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
55 | |
56 // Compute a new Type for this node. Basically we just do the pre-check, | |
57 // then call the virtual add() to set the type. | |
58 virtual const Type *Value( PhaseTransform *phase ) const; | |
59 | |
60 // Check if this addition involves the additive identity | |
61 virtual const Type *add_of_identity( const Type *t1, const Type *t2 ) const; | |
62 | |
63 // Supplied function returns the sum of the inputs. | |
64 // This also type-checks the inputs for sanity. Guaranteed never to | |
65 // be passed a TOP or BOTTOM type, these are filtered out by a pre-check. | |
66 virtual const Type *add_ring( const Type *, const Type * ) const = 0; | |
67 | |
68 // Supplied function to return the additive identity type | |
69 virtual const Type *add_id() const = 0; | |
70 | |
71 }; | |
72 | |
73 //------------------------------AddINode--------------------------------------- | |
74 // Add 2 integers | |
75 class AddINode : public AddNode { | |
76 public: | |
77 AddINode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
78 virtual int Opcode() const; | |
79 virtual const Type *add_ring( const Type *, const Type * ) const; | |
80 virtual const Type *add_id() const { return TypeInt::ZERO; } | |
81 virtual const Type *bottom_type() const { return TypeInt::INT; } | |
82 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
83 virtual Node *Identity( PhaseTransform *phase ); | |
84 virtual uint ideal_reg() const { return Op_RegI; } | |
85 }; | |
86 | |
87 //------------------------------AddLNode--------------------------------------- | |
88 // Add 2 longs | |
89 class AddLNode : public AddNode { | |
90 public: | |
91 AddLNode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
92 virtual int Opcode() const; | |
93 virtual const Type *add_ring( const Type *, const Type * ) const; | |
94 virtual const Type *add_id() const { return TypeLong::ZERO; } | |
95 virtual const Type *bottom_type() const { return TypeLong::LONG; } | |
96 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
97 virtual Node *Identity( PhaseTransform *phase ); | |
98 virtual uint ideal_reg() const { return Op_RegL; } | |
99 }; | |
100 | |
101 //------------------------------AddFNode--------------------------------------- | |
102 // Add 2 floats | |
103 class AddFNode : public AddNode { | |
104 public: | |
105 AddFNode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
106 virtual int Opcode() const; | |
107 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
108 virtual const Type *add_of_identity( const Type *t1, const Type *t2 ) const; | |
109 virtual const Type *add_ring( const Type *, const Type * ) const; | |
110 virtual const Type *add_id() const { return TypeF::ZERO; } | |
111 virtual const Type *bottom_type() const { return Type::FLOAT; } | |
112 virtual Node *Identity( PhaseTransform *phase ) { return this; } | |
113 virtual uint ideal_reg() const { return Op_RegF; } | |
114 }; | |
115 | |
116 //------------------------------AddDNode--------------------------------------- | |
117 // Add 2 doubles | |
118 class AddDNode : public AddNode { | |
119 public: | |
120 AddDNode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
121 virtual int Opcode() const; | |
122 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
123 virtual const Type *add_of_identity( const Type *t1, const Type *t2 ) const; | |
124 virtual const Type *add_ring( const Type *, const Type * ) const; | |
125 virtual const Type *add_id() const { return TypeD::ZERO; } | |
126 virtual const Type *bottom_type() const { return Type::DOUBLE; } | |
127 virtual Node *Identity( PhaseTransform *phase ) { return this; } | |
128 virtual uint ideal_reg() const { return Op_RegD; } | |
129 }; | |
130 | |
131 //------------------------------AddPNode--------------------------------------- | |
132 // Add pointer plus integer to get pointer. NOT commutative, really. | |
133 // So not really an AddNode. Lives here, because people associate it with | |
134 // an add. | |
135 class AddPNode : public Node { | |
136 public: | |
137 enum { Control, // When is it safe to do this add? | |
138 Base, // Base oop, for GC purposes | |
139 Address, // Actually address, derived from base | |
140 Offset } ; // Offset added to address | |
141 AddPNode( Node *base, Node *ptr, Node *off ) : Node(0,base,ptr,off) { | |
142 init_class_id(Class_AddP); | |
143 } | |
144 virtual int Opcode() const; | |
145 virtual Node *Identity( PhaseTransform *phase ); | |
146 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
147 virtual const Type *Value( PhaseTransform *phase ) const; | |
148 virtual const Type *bottom_type() const; | |
149 virtual uint ideal_reg() const { return Op_RegP; } | |
150 Node *base_node() { assert( req() > Base, "Missing base"); return in(Base); } | |
151 static Node* Ideal_base_and_offset(Node* ptr, PhaseTransform* phase, | |
152 // second return value: | |
153 intptr_t& offset); | |
17
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154 |
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155 // Collect the AddP offset values into the elements array, giving up |
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156 // if there are more than length. |
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157 int unpack_offsets(Node* elements[], int length); |
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158 |
0 | 159 // Do not match base-ptr edge |
160 virtual uint match_edge(uint idx) const; | |
161 }; | |
162 | |
163 //------------------------------OrINode---------------------------------------- | |
164 // Logically OR 2 integers. Included with the ADD nodes because it inherits | |
165 // all the behavior of addition on a ring. | |
166 class OrINode : public AddNode { | |
167 public: | |
168 OrINode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
169 virtual int Opcode() const; | |
170 virtual const Type *add_ring( const Type *, const Type * ) const; | |
171 virtual const Type *add_id() const { return TypeInt::ZERO; } | |
172 virtual const Type *bottom_type() const { return TypeInt::INT; } | |
173 virtual Node *Identity( PhaseTransform *phase ); | |
174 virtual uint ideal_reg() const { return Op_RegI; } | |
175 }; | |
176 | |
177 //------------------------------OrLNode---------------------------------------- | |
178 // Logically OR 2 longs. Included with the ADD nodes because it inherits | |
179 // all the behavior of addition on a ring. | |
180 class OrLNode : public AddNode { | |
181 public: | |
182 OrLNode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
183 virtual int Opcode() const; | |
184 virtual const Type *add_ring( const Type *, const Type * ) const; | |
185 virtual const Type *add_id() const { return TypeLong::ZERO; } | |
186 virtual const Type *bottom_type() const { return TypeLong::LONG; } | |
187 virtual Node *Identity( PhaseTransform *phase ); | |
188 virtual uint ideal_reg() const { return Op_RegL; } | |
189 }; | |
190 | |
191 //------------------------------XorINode--------------------------------------- | |
192 // XOR'ing 2 integers | |
193 class XorINode : public AddNode { | |
194 public: | |
195 XorINode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
196 virtual int Opcode() const; | |
197 virtual const Type *add_ring( const Type *, const Type * ) const; | |
198 virtual const Type *add_id() const { return TypeInt::ZERO; } | |
199 virtual const Type *bottom_type() const { return TypeInt::INT; } | |
200 virtual uint ideal_reg() const { return Op_RegI; } | |
201 }; | |
202 | |
203 //------------------------------XorINode--------------------------------------- | |
204 // XOR'ing 2 longs | |
205 class XorLNode : public AddNode { | |
206 public: | |
207 XorLNode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
208 virtual int Opcode() const; | |
209 virtual const Type *add_ring( const Type *, const Type * ) const; | |
210 virtual const Type *add_id() const { return TypeLong::ZERO; } | |
211 virtual const Type *bottom_type() const { return TypeLong::LONG; } | |
212 virtual uint ideal_reg() const { return Op_RegL; } | |
213 }; | |
214 | |
215 //------------------------------MaxNode---------------------------------------- | |
216 // Max (or min) of 2 values. Included with the ADD nodes because it inherits | |
217 // all the behavior of addition on a ring. Only new thing is that we allow | |
218 // 2 equal inputs to be equal. | |
219 class MaxNode : public AddNode { | |
220 public: | |
221 MaxNode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
222 virtual int Opcode() const = 0; | |
223 }; | |
224 | |
225 //------------------------------MaxINode--------------------------------------- | |
226 // Maximum of 2 integers. Included with the ADD nodes because it inherits | |
227 // all the behavior of addition on a ring. | |
228 class MaxINode : public MaxNode { | |
229 public: | |
230 MaxINode( Node *in1, Node *in2 ) : MaxNode(in1,in2) {} | |
231 virtual int Opcode() const; | |
232 virtual const Type *add_ring( const Type *, const Type * ) const; | |
233 virtual const Type *add_id() const { return TypeInt::make(min_jint); } | |
234 virtual const Type *bottom_type() const { return TypeInt::INT; } | |
235 virtual uint ideal_reg() const { return Op_RegI; } | |
236 }; | |
237 | |
238 //------------------------------MinINode--------------------------------------- | |
239 // MINimum of 2 integers. Included with the ADD nodes because it inherits | |
240 // all the behavior of addition on a ring. | |
241 class MinINode : public MaxNode { | |
242 public: | |
243 MinINode( Node *in1, Node *in2 ) : MaxNode(in1,in2) {} | |
244 virtual int Opcode() const; | |
245 virtual const Type *add_ring( const Type *, const Type * ) const; | |
246 virtual const Type *add_id() const { return TypeInt::make(max_jint); } | |
247 virtual const Type *bottom_type() const { return TypeInt::INT; } | |
248 virtual uint ideal_reg() const { return Op_RegI; } | |
249 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
250 }; | |
1972 | 251 |
252 #endif // SHARE_VM_OPTO_ADDNODE_HPP |