Mercurial > hg > graal-jvmci-8
annotate src/share/vm/opto/addnode.hpp @ 900:9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
Summary: developed a reexecute logic for the interpreter to reexecute the bytecode when deopt happens
Reviewed-by: kvn, never, jrose, twisti
author | cfang |
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date | Fri, 31 Jul 2009 17:12:33 -0700 |
parents | ff5961f4c095 |
children | b5fdf39b9749 |
rev | line source |
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0 | 1 /* |
2 * Copyright 1997-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 // Portions of code courtesy of Clifford Click | |
26 | |
27 class PhaseTransform; | |
28 | |
29 //------------------------------AddNode---------------------------------------- | |
30 // Classic Add functionality. This covers all the usual 'add' behaviors for | |
31 // an algebraic ring. Add-integer, add-float, add-double, and binary-or are | |
32 // all inherited from this class. The various identity values are supplied | |
33 // by virtual functions. | |
34 class AddNode : public Node { | |
35 virtual uint hash() const; | |
36 public: | |
37 AddNode( Node *in1, Node *in2 ) : Node(0,in1,in2) { | |
38 init_class_id(Class_Add); | |
39 } | |
40 | |
41 // Handle algebraic identities here. If we have an identity, return the Node | |
42 // we are equivalent to. We look for "add of zero" as an identity. | |
43 virtual Node *Identity( PhaseTransform *phase ); | |
44 | |
45 // We also canonicalize the Node, moving constants to the right input, | |
46 // and flatten expressions (so that 1+x+2 becomes x+3). | |
47 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
48 | |
49 // Compute a new Type for this node. Basically we just do the pre-check, | |
50 // then call the virtual add() to set the type. | |
51 virtual const Type *Value( PhaseTransform *phase ) const; | |
52 | |
53 // Check if this addition involves the additive identity | |
54 virtual const Type *add_of_identity( const Type *t1, const Type *t2 ) const; | |
55 | |
56 // Supplied function returns the sum of the inputs. | |
57 // This also type-checks the inputs for sanity. Guaranteed never to | |
58 // be passed a TOP or BOTTOM type, these are filtered out by a pre-check. | |
59 virtual const Type *add_ring( const Type *, const Type * ) const = 0; | |
60 | |
61 // Supplied function to return the additive identity type | |
62 virtual const Type *add_id() const = 0; | |
63 | |
64 }; | |
65 | |
66 //------------------------------AddINode--------------------------------------- | |
67 // Add 2 integers | |
68 class AddINode : public AddNode { | |
69 public: | |
70 AddINode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
71 virtual int Opcode() const; | |
72 virtual const Type *add_ring( const Type *, const Type * ) const; | |
73 virtual const Type *add_id() const { return TypeInt::ZERO; } | |
74 virtual const Type *bottom_type() const { return TypeInt::INT; } | |
75 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
76 virtual Node *Identity( PhaseTransform *phase ); | |
77 virtual uint ideal_reg() const { return Op_RegI; } | |
78 }; | |
79 | |
80 //------------------------------AddLNode--------------------------------------- | |
81 // Add 2 longs | |
82 class AddLNode : public AddNode { | |
83 public: | |
84 AddLNode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
85 virtual int Opcode() const; | |
86 virtual const Type *add_ring( const Type *, const Type * ) const; | |
87 virtual const Type *add_id() const { return TypeLong::ZERO; } | |
88 virtual const Type *bottom_type() const { return TypeLong::LONG; } | |
89 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
90 virtual Node *Identity( PhaseTransform *phase ); | |
91 virtual uint ideal_reg() const { return Op_RegL; } | |
92 }; | |
93 | |
94 //------------------------------AddFNode--------------------------------------- | |
95 // Add 2 floats | |
96 class AddFNode : public AddNode { | |
97 public: | |
98 AddFNode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
99 virtual int Opcode() const; | |
100 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
101 virtual const Type *add_of_identity( const Type *t1, const Type *t2 ) const; | |
102 virtual const Type *add_ring( const Type *, const Type * ) const; | |
103 virtual const Type *add_id() const { return TypeF::ZERO; } | |
104 virtual const Type *bottom_type() const { return Type::FLOAT; } | |
105 virtual Node *Identity( PhaseTransform *phase ) { return this; } | |
106 virtual uint ideal_reg() const { return Op_RegF; } | |
107 }; | |
108 | |
109 //------------------------------AddDNode--------------------------------------- | |
110 // Add 2 doubles | |
111 class AddDNode : public AddNode { | |
112 public: | |
113 AddDNode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
114 virtual int Opcode() const; | |
115 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
116 virtual const Type *add_of_identity( const Type *t1, const Type *t2 ) const; | |
117 virtual const Type *add_ring( const Type *, const Type * ) const; | |
118 virtual const Type *add_id() const { return TypeD::ZERO; } | |
119 virtual const Type *bottom_type() const { return Type::DOUBLE; } | |
120 virtual Node *Identity( PhaseTransform *phase ) { return this; } | |
121 virtual uint ideal_reg() const { return Op_RegD; } | |
122 }; | |
123 | |
124 //------------------------------AddPNode--------------------------------------- | |
125 // Add pointer plus integer to get pointer. NOT commutative, really. | |
126 // So not really an AddNode. Lives here, because people associate it with | |
127 // an add. | |
128 class AddPNode : public Node { | |
129 public: | |
130 enum { Control, // When is it safe to do this add? | |
131 Base, // Base oop, for GC purposes | |
132 Address, // Actually address, derived from base | |
133 Offset } ; // Offset added to address | |
134 AddPNode( Node *base, Node *ptr, Node *off ) : Node(0,base,ptr,off) { | |
135 init_class_id(Class_AddP); | |
136 } | |
137 virtual int Opcode() const; | |
138 virtual Node *Identity( PhaseTransform *phase ); | |
139 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
140 virtual const Type *Value( PhaseTransform *phase ) const; | |
141 virtual const Type *bottom_type() const; | |
142 virtual uint ideal_reg() const { return Op_RegP; } | |
143 Node *base_node() { assert( req() > Base, "Missing base"); return in(Base); } | |
144 static Node* Ideal_base_and_offset(Node* ptr, PhaseTransform* phase, | |
145 // second return value: | |
146 intptr_t& offset); | |
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147 |
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148 // Collect the AddP offset values into the elements array, giving up |
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149 // if there are more than length. |
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150 int unpack_offsets(Node* elements[], int length); |
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151 |
0 | 152 // Do not match base-ptr edge |
153 virtual uint match_edge(uint idx) const; | |
154 static const Type *mach_bottom_type(const MachNode* n); // used by ad_<arch>.hpp | |
155 }; | |
156 | |
157 //------------------------------OrINode---------------------------------------- | |
158 // Logically OR 2 integers. Included with the ADD nodes because it inherits | |
159 // all the behavior of addition on a ring. | |
160 class OrINode : public AddNode { | |
161 public: | |
162 OrINode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
163 virtual int Opcode() const; | |
164 virtual const Type *add_ring( const Type *, const Type * ) const; | |
165 virtual const Type *add_id() const { return TypeInt::ZERO; } | |
166 virtual const Type *bottom_type() const { return TypeInt::INT; } | |
167 virtual Node *Identity( PhaseTransform *phase ); | |
168 virtual uint ideal_reg() const { return Op_RegI; } | |
169 }; | |
170 | |
171 //------------------------------OrLNode---------------------------------------- | |
172 // Logically OR 2 longs. Included with the ADD nodes because it inherits | |
173 // all the behavior of addition on a ring. | |
174 class OrLNode : public AddNode { | |
175 public: | |
176 OrLNode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
177 virtual int Opcode() const; | |
178 virtual const Type *add_ring( const Type *, const Type * ) const; | |
179 virtual const Type *add_id() const { return TypeLong::ZERO; } | |
180 virtual const Type *bottom_type() const { return TypeLong::LONG; } | |
181 virtual Node *Identity( PhaseTransform *phase ); | |
182 virtual uint ideal_reg() const { return Op_RegL; } | |
183 }; | |
184 | |
185 //------------------------------XorINode--------------------------------------- | |
186 // XOR'ing 2 integers | |
187 class XorINode : public AddNode { | |
188 public: | |
189 XorINode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
190 virtual int Opcode() const; | |
191 virtual const Type *add_ring( const Type *, const Type * ) const; | |
192 virtual const Type *add_id() const { return TypeInt::ZERO; } | |
193 virtual const Type *bottom_type() const { return TypeInt::INT; } | |
194 virtual uint ideal_reg() const { return Op_RegI; } | |
195 }; | |
196 | |
197 //------------------------------XorINode--------------------------------------- | |
198 // XOR'ing 2 longs | |
199 class XorLNode : public AddNode { | |
200 public: | |
201 XorLNode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
202 virtual int Opcode() const; | |
203 virtual const Type *add_ring( const Type *, const Type * ) const; | |
204 virtual const Type *add_id() const { return TypeLong::ZERO; } | |
205 virtual const Type *bottom_type() const { return TypeLong::LONG; } | |
206 virtual uint ideal_reg() const { return Op_RegL; } | |
207 }; | |
208 | |
209 //------------------------------MaxNode---------------------------------------- | |
210 // Max (or min) of 2 values. Included with the ADD nodes because it inherits | |
211 // all the behavior of addition on a ring. Only new thing is that we allow | |
212 // 2 equal inputs to be equal. | |
213 class MaxNode : public AddNode { | |
214 public: | |
215 MaxNode( Node *in1, Node *in2 ) : AddNode(in1,in2) {} | |
216 virtual int Opcode() const = 0; | |
217 }; | |
218 | |
219 //------------------------------MaxINode--------------------------------------- | |
220 // Maximum of 2 integers. Included with the ADD nodes because it inherits | |
221 // all the behavior of addition on a ring. | |
222 class MaxINode : public MaxNode { | |
223 public: | |
224 MaxINode( Node *in1, Node *in2 ) : MaxNode(in1,in2) {} | |
225 virtual int Opcode() const; | |
226 virtual const Type *add_ring( const Type *, const Type * ) const; | |
227 virtual const Type *add_id() const { return TypeInt::make(min_jint); } | |
228 virtual const Type *bottom_type() const { return TypeInt::INT; } | |
229 virtual uint ideal_reg() const { return Op_RegI; } | |
230 }; | |
231 | |
232 //------------------------------MinINode--------------------------------------- | |
233 // MINimum of 2 integers. Included with the ADD nodes because it inherits | |
234 // all the behavior of addition on a ring. | |
235 class MinINode : public MaxNode { | |
236 public: | |
237 MinINode( Node *in1, Node *in2 ) : MaxNode(in1,in2) {} | |
238 virtual int Opcode() const; | |
239 virtual const Type *add_ring( const Type *, const Type * ) const; | |
240 virtual const Type *add_id() const { return TypeInt::make(max_jint); } | |
241 virtual const Type *bottom_type() const { return TypeInt::INT; } | |
242 virtual uint ideal_reg() const { return Op_RegI; } | |
243 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
244 }; |