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annotate src/share/vm/opto/mulnode.hpp @ 4724:0841c0ec2ed6
7123810: new hotspot build - hs23-b10
Reviewed-by: jcoomes
author | amurillo |
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date | Fri, 23 Dec 2011 15:29:34 -0800 |
parents | c7b60b601eb4 |
children | 8c92982cbbc4 |
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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_MULNODE_HPP |
26 #define SHARE_VM_OPTO_MULNODE_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 //------------------------------MulNode---------------------------------------- | |
37 // Classic MULTIPLY functionality. This covers all the usual 'multiply' | |
38 // behaviors for an algebraic ring. Multiply-integer, multiply-float, | |
39 // multiply-double, and binary-and are all inherited from this class. The | |
40 // various identity values are supplied by virtual functions. | |
41 class MulNode : public Node { | |
42 virtual uint hash() const; | |
43 public: | |
3842 | 44 MulNode( Node *in1, Node *in2 ): Node(0,in1,in2) {} |
0 | 45 |
46 // Handle algebraic identities here. If we have an identity, return the Node | |
47 // we are equivalent to. We look for "add of zero" as an identity. | |
48 virtual Node *Identity( PhaseTransform *phase ); | |
49 | |
50 // We also canonicalize the Node, moving constants to the right input, | |
51 // and flatten expressions (so that 1+x+2 becomes x+3). | |
52 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
53 | |
54 // Compute a new Type for this node. Basically we just do the pre-check, | |
55 // then call the virtual add() to set the type. | |
56 virtual const Type *Value( PhaseTransform *phase ) const; | |
57 | |
58 // Supplied function returns the product of the inputs. | |
59 // This also type-checks the inputs for sanity. Guaranteed never to | |
60 // be passed a TOP or BOTTOM type, these are filtered out by a pre-check. | |
61 // This call recognizes the multiplicative zero type. | |
62 virtual const Type *mul_ring( const Type *, const Type * ) const = 0; | |
63 | |
64 // Supplied function to return the multiplicative identity type | |
65 virtual const Type *mul_id() const = 0; | |
66 | |
67 // Supplied function to return the additive identity type | |
68 virtual const Type *add_id() const = 0; | |
69 | |
70 // Supplied function to return the additive opcode | |
71 virtual int add_opcode() const = 0; | |
72 | |
73 // Supplied function to return the multiplicative opcode | |
74 virtual int mul_opcode() const = 0; | |
75 | |
76 }; | |
77 | |
78 //------------------------------MulINode--------------------------------------- | |
79 // Multiply 2 integers | |
80 class MulINode : public MulNode { | |
81 public: | |
82 MulINode( Node *in1, Node *in2 ) : MulNode(in1,in2) {} | |
83 virtual int Opcode() const; | |
84 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
85 virtual const Type *mul_ring( const Type *, const Type * ) const; | |
86 const Type *mul_id() const { return TypeInt::ONE; } | |
87 const Type *add_id() const { return TypeInt::ZERO; } | |
88 int add_opcode() const { return Op_AddI; } | |
89 int mul_opcode() const { return Op_MulI; } | |
90 const Type *bottom_type() const { return TypeInt::INT; } | |
91 virtual uint ideal_reg() const { return Op_RegI; } | |
92 }; | |
93 | |
94 //------------------------------MulLNode--------------------------------------- | |
95 // Multiply 2 longs | |
96 class MulLNode : public MulNode { | |
97 public: | |
98 MulLNode( Node *in1, Node *in2 ) : MulNode(in1,in2) {} | |
99 virtual int Opcode() const; | |
100 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
101 virtual const Type *mul_ring( const Type *, const Type * ) const; | |
102 const Type *mul_id() const { return TypeLong::ONE; } | |
103 const Type *add_id() const { return TypeLong::ZERO; } | |
104 int add_opcode() const { return Op_AddL; } | |
105 int mul_opcode() const { return Op_MulL; } | |
106 const Type *bottom_type() const { return TypeLong::LONG; } | |
107 virtual uint ideal_reg() const { return Op_RegL; } | |
108 }; | |
109 | |
110 | |
111 //------------------------------MulFNode--------------------------------------- | |
112 // Multiply 2 floats | |
113 class MulFNode : public MulNode { | |
114 public: | |
115 MulFNode( Node *in1, Node *in2 ) : MulNode(in1,in2) {} | |
116 virtual int Opcode() const; | |
117 virtual const Type *mul_ring( const Type *, const Type * ) const; | |
118 const Type *mul_id() const { return TypeF::ONE; } | |
119 const Type *add_id() const { return TypeF::ZERO; } | |
120 int add_opcode() const { return Op_AddF; } | |
121 int mul_opcode() const { return Op_MulF; } | |
122 const Type *bottom_type() const { return Type::FLOAT; } | |
123 virtual uint ideal_reg() const { return Op_RegF; } | |
124 }; | |
125 | |
126 //------------------------------MulDNode--------------------------------------- | |
127 // Multiply 2 doubles | |
128 class MulDNode : public MulNode { | |
129 public: | |
130 MulDNode( Node *in1, Node *in2 ) : MulNode(in1,in2) {} | |
131 virtual int Opcode() const; | |
132 virtual const Type *mul_ring( const Type *, const Type * ) const; | |
133 const Type *mul_id() const { return TypeD::ONE; } | |
134 const Type *add_id() const { return TypeD::ZERO; } | |
135 int add_opcode() const { return Op_AddD; } | |
136 int mul_opcode() const { return Op_MulD; } | |
137 const Type *bottom_type() const { return Type::DOUBLE; } | |
138 virtual uint ideal_reg() const { return Op_RegD; } | |
139 }; | |
140 | |
145 | 141 //-------------------------------MulHiLNode------------------------------------ |
142 // Upper 64 bits of a 64 bit by 64 bit multiply | |
143 class MulHiLNode : public Node { | |
144 public: | |
145 MulHiLNode( Node *in1, Node *in2 ) : Node(0,in1,in2) {} | |
146 virtual int Opcode() const; | |
147 virtual const Type *Value( PhaseTransform *phase ) const; | |
148 const Type *bottom_type() const { return TypeLong::LONG; } | |
149 virtual uint ideal_reg() const { return Op_RegL; } | |
150 }; | |
0 | 151 |
152 //------------------------------AndINode--------------------------------------- | |
153 // Logically AND 2 integers. Included with the MUL nodes because it inherits | |
154 // all the behavior of multiplication on a ring. | |
155 class AndINode : public MulINode { | |
156 public: | |
157 AndINode( Node *in1, Node *in2 ) : MulINode(in1,in2) {} | |
158 virtual int Opcode() const; | |
159 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
160 virtual Node *Identity( PhaseTransform *phase ); | |
161 virtual const Type *mul_ring( const Type *, const Type * ) const; | |
162 const Type *mul_id() const { return TypeInt::MINUS_1; } | |
163 const Type *add_id() const { return TypeInt::ZERO; } | |
164 int add_opcode() const { return Op_OrI; } | |
165 int mul_opcode() const { return Op_AndI; } | |
166 virtual uint ideal_reg() const { return Op_RegI; } | |
167 }; | |
168 | |
169 //------------------------------AndINode--------------------------------------- | |
170 // Logically AND 2 longs. Included with the MUL nodes because it inherits | |
171 // all the behavior of multiplication on a ring. | |
172 class AndLNode : public MulLNode { | |
173 public: | |
174 AndLNode( Node *in1, Node *in2 ) : MulLNode(in1,in2) {} | |
175 virtual int Opcode() const; | |
176 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
177 virtual Node *Identity( PhaseTransform *phase ); | |
178 virtual const Type *mul_ring( const Type *, const Type * ) const; | |
179 const Type *mul_id() const { return TypeLong::MINUS_1; } | |
180 const Type *add_id() const { return TypeLong::ZERO; } | |
181 int add_opcode() const { return Op_OrL; } | |
182 int mul_opcode() const { return Op_AndL; } | |
183 virtual uint ideal_reg() const { return Op_RegL; } | |
184 }; | |
185 | |
186 //------------------------------LShiftINode------------------------------------ | |
187 // Logical shift left | |
188 class LShiftINode : public Node { | |
189 public: | |
190 LShiftINode( Node *in1, Node *in2 ) : Node(0,in1,in2) {} | |
191 virtual int Opcode() const; | |
192 virtual Node *Identity( PhaseTransform *phase ); | |
193 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
194 virtual const Type *Value( PhaseTransform *phase ) const; | |
195 const Type *bottom_type() const { return TypeInt::INT; } | |
196 virtual uint ideal_reg() const { return Op_RegI; } | |
197 }; | |
198 | |
199 //------------------------------LShiftLNode------------------------------------ | |
200 // Logical shift left | |
201 class LShiftLNode : public Node { | |
202 public: | |
203 LShiftLNode( Node *in1, Node *in2 ) : Node(0,in1,in2) {} | |
204 virtual int Opcode() const; | |
205 virtual Node *Identity( PhaseTransform *phase ); | |
206 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
207 virtual const Type *Value( PhaseTransform *phase ) const; | |
208 const Type *bottom_type() const { return TypeLong::LONG; } | |
209 virtual uint ideal_reg() const { return Op_RegL; } | |
210 }; | |
211 | |
212 //------------------------------RShiftINode------------------------------------ | |
213 // Signed shift right | |
214 class RShiftINode : public Node { | |
215 public: | |
216 RShiftINode( Node *in1, Node *in2 ) : Node(0,in1,in2) {} | |
217 virtual int Opcode() const; | |
218 virtual Node *Identity( PhaseTransform *phase ); | |
219 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
220 virtual const Type *Value( PhaseTransform *phase ) const; | |
221 const Type *bottom_type() const { return TypeInt::INT; } | |
222 virtual uint ideal_reg() const { return Op_RegI; } | |
223 }; | |
224 | |
225 //------------------------------RShiftLNode------------------------------------ | |
226 // Signed shift right | |
227 class RShiftLNode : public Node { | |
228 public: | |
229 RShiftLNode( Node *in1, Node *in2 ) : Node(0,in1,in2) {} | |
230 virtual int Opcode() const; | |
231 virtual Node *Identity( PhaseTransform *phase ); | |
232 virtual const Type *Value( PhaseTransform *phase ) const; | |
233 const Type *bottom_type() const { return TypeLong::LONG; } | |
234 virtual uint ideal_reg() const { return Op_RegL; } | |
235 }; | |
236 | |
237 | |
238 //------------------------------URShiftINode----------------------------------- | |
239 // Logical shift right | |
240 class URShiftINode : public Node { | |
241 public: | |
242 URShiftINode( Node *in1, Node *in2 ) : Node(0,in1,in2) {} | |
243 virtual int Opcode() const; | |
244 virtual Node *Identity( PhaseTransform *phase ); | |
245 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
246 virtual const Type *Value( PhaseTransform *phase ) const; | |
247 const Type *bottom_type() const { return TypeInt::INT; } | |
248 virtual uint ideal_reg() const { return Op_RegI; } | |
249 }; | |
250 | |
251 //------------------------------URShiftLNode----------------------------------- | |
252 // Logical shift right | |
253 class URShiftLNode : public Node { | |
254 public: | |
255 URShiftLNode( Node *in1, Node *in2 ) : Node(0,in1,in2) {} | |
256 virtual int Opcode() const; | |
257 virtual Node *Identity( PhaseTransform *phase ); | |
258 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
259 virtual const Type *Value( PhaseTransform *phase ) const; | |
260 const Type *bottom_type() const { return TypeLong::LONG; } | |
261 virtual uint ideal_reg() const { return Op_RegL; } | |
262 }; | |
1972 | 263 |
264 #endif // SHARE_VM_OPTO_MULNODE_HPP |