Mercurial > hg > truffle
annotate src/share/vm/opto/subnode.hpp @ 9202:b6629b739a55
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 22 Apr 2013 09:54:57 +0200 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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 * | |
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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_SUBNODE_HPP |
26 #define SHARE_VM_OPTO_SUBNODE_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 //------------------------------SUBNode---------------------------------------- | |
35 // Class SUBTRACTION functionality. This covers all the usual 'subtract' | |
36 // behaviors. Subtract-integer, -float, -double, binary xor, compare-integer, | |
37 // -float, and -double are all inherited from this class. The compare | |
38 // functions behave like subtract functions, except that all negative answers | |
39 // are compressed into -1, and all positive answers compressed to 1. | |
40 class SubNode : public Node { | |
41 public: | |
42 SubNode( Node *in1, Node *in2 ) : Node(0,in1,in2) { | |
43 init_class_id(Class_Sub); | |
44 } | |
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 // Compute a new Type for this node. Basically we just do the pre-check, | |
51 // then call the virtual add() to set the type. | |
52 virtual const Type *Value( PhaseTransform *phase ) const; | |
53 | |
54 // Supplied function returns the subtractend of the inputs. | |
55 // This also type-checks the inputs for sanity. Guaranteed never to | |
56 // be passed a TOP or BOTTOM type, these are filtered out by a pre-check. | |
57 virtual const Type *sub( const Type *, const Type * ) const = 0; | |
58 | |
59 // Supplied function to return the additive identity type. | |
60 // This is returned whenever the subtracts inputs are the same. | |
61 virtual const Type *add_id() const = 0; | |
62 | |
63 }; | |
64 | |
65 | |
66 // NOTE: SubINode should be taken away and replaced by add and negate | |
67 //------------------------------SubINode--------------------------------------- | |
68 // Subtract 2 integers | |
69 class SubINode : public SubNode { | |
70 public: | |
71 SubINode( Node *in1, Node *in2 ) : SubNode(in1,in2) {} | |
72 virtual int Opcode() const; | |
73 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
74 virtual const Type *sub( const Type *, const Type * ) const; | |
75 const Type *add_id() const { return TypeInt::ZERO; } | |
76 const Type *bottom_type() const { return TypeInt::INT; } | |
77 virtual uint ideal_reg() const { return Op_RegI; } | |
78 }; | |
79 | |
80 //------------------------------SubLNode--------------------------------------- | |
81 // Subtract 2 integers | |
82 class SubLNode : public SubNode { | |
83 public: | |
84 SubLNode( Node *in1, Node *in2 ) : SubNode(in1,in2) {} | |
85 virtual int Opcode() const; | |
86 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
87 virtual const Type *sub( const Type *, const Type * ) const; | |
88 const Type *add_id() const { return TypeLong::ZERO; } | |
89 const Type *bottom_type() const { return TypeLong::LONG; } | |
90 virtual uint ideal_reg() const { return Op_RegL; } | |
91 }; | |
92 | |
93 // NOTE: SubFPNode should be taken away and replaced by add and negate | |
94 //------------------------------SubFPNode-------------------------------------- | |
95 // Subtract 2 floats or doubles | |
96 class SubFPNode : public SubNode { | |
97 protected: | |
98 SubFPNode( Node *in1, Node *in2 ) : SubNode(in1,in2) {} | |
99 public: | |
100 const Type *Value( PhaseTransform *phase ) const; | |
101 }; | |
102 | |
103 // NOTE: SubFNode should be taken away and replaced by add and negate | |
104 //------------------------------SubFNode--------------------------------------- | |
105 // Subtract 2 doubles | |
106 class SubFNode : public SubFPNode { | |
107 public: | |
108 SubFNode( Node *in1, Node *in2 ) : SubFPNode(in1,in2) {} | |
109 virtual int Opcode() const; | |
110 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
111 virtual const Type *sub( const Type *, const Type * ) const; | |
112 const Type *add_id() const { return TypeF::ZERO; } | |
113 const Type *bottom_type() const { return Type::FLOAT; } | |
114 virtual uint ideal_reg() const { return Op_RegF; } | |
115 }; | |
116 | |
117 // NOTE: SubDNode should be taken away and replaced by add and negate | |
118 //------------------------------SubDNode--------------------------------------- | |
119 // Subtract 2 doubles | |
120 class SubDNode : public SubFPNode { | |
121 public: | |
122 SubDNode( Node *in1, Node *in2 ) : SubFPNode(in1,in2) {} | |
123 virtual int Opcode() const; | |
124 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
125 virtual const Type *sub( const Type *, const Type * ) const; | |
126 const Type *add_id() const { return TypeD::ZERO; } | |
127 const Type *bottom_type() const { return Type::DOUBLE; } | |
128 virtual uint ideal_reg() const { return Op_RegD; } | |
129 }; | |
130 | |
131 //------------------------------CmpNode--------------------------------------- | |
132 // Compare 2 values, returning condition codes (-1, 0 or 1). | |
133 class CmpNode : public SubNode { | |
134 public: | |
135 CmpNode( Node *in1, Node *in2 ) : SubNode(in1,in2) { | |
136 init_class_id(Class_Cmp); | |
137 } | |
138 virtual Node *Identity( PhaseTransform *phase ); | |
139 const Type *add_id() const { return TypeInt::ZERO; } | |
140 const Type *bottom_type() const { return TypeInt::CC; } | |
141 virtual uint ideal_reg() const { return Op_RegFlags; } | |
142 }; | |
143 | |
144 //------------------------------CmpINode--------------------------------------- | |
145 // Compare 2 signed values, returning condition codes (-1, 0 or 1). | |
146 class CmpINode : public CmpNode { | |
147 public: | |
148 CmpINode( Node *in1, Node *in2 ) : CmpNode(in1,in2) {} | |
149 virtual int Opcode() const; | |
150 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
151 virtual const Type *sub( const Type *, const Type * ) const; | |
152 }; | |
153 | |
154 //------------------------------CmpUNode--------------------------------------- | |
155 // Compare 2 unsigned values (integer or pointer), returning condition codes (-1, 0 or 1). | |
156 class CmpUNode : public CmpNode { | |
157 public: | |
158 CmpUNode( Node *in1, Node *in2 ) : CmpNode(in1,in2) {} | |
159 virtual int Opcode() const; | |
160 virtual const Type *sub( const Type *, const Type * ) const; | |
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161 bool is_index_range_check() const; |
0 | 162 }; |
163 | |
164 //------------------------------CmpPNode--------------------------------------- | |
165 // Compare 2 pointer values, returning condition codes (-1, 0 or 1). | |
166 class CmpPNode : public CmpNode { | |
167 public: | |
168 CmpPNode( Node *in1, Node *in2 ) : CmpNode(in1,in2) {} | |
169 virtual int Opcode() const; | |
170 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
171 virtual const Type *sub( const Type *, const Type * ) const; | |
172 }; | |
173 | |
113
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174 //------------------------------CmpNNode-------------------------------------- |
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175 // Compare 2 narrow oop values, returning condition codes (-1, 0 or 1). |
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176 class CmpNNode : public CmpNode { |
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177 public: |
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178 CmpNNode( Node *in1, Node *in2 ) : CmpNode(in1,in2) {} |
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179 virtual int Opcode() const; |
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180 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); |
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181 virtual const Type *sub( const Type *, const Type * ) const; |
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182 }; |
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183 |
0 | 184 //------------------------------CmpLNode--------------------------------------- |
185 // Compare 2 long values, returning condition codes (-1, 0 or 1). | |
186 class CmpLNode : public CmpNode { | |
187 public: | |
188 CmpLNode( Node *in1, Node *in2 ) : CmpNode(in1,in2) {} | |
189 virtual int Opcode() const; | |
190 virtual const Type *sub( const Type *, const Type * ) const; | |
191 }; | |
192 | |
193 //------------------------------CmpL3Node-------------------------------------- | |
194 // Compare 2 long values, returning integer value (-1, 0 or 1). | |
195 class CmpL3Node : public CmpLNode { | |
196 public: | |
197 CmpL3Node( Node *in1, Node *in2 ) : CmpLNode(in1,in2) { | |
198 // Since it is not consumed by Bools, it is not really a Cmp. | |
199 init_class_id(Class_Sub); | |
200 } | |
201 virtual int Opcode() const; | |
202 virtual uint ideal_reg() const { return Op_RegI; } | |
203 }; | |
204 | |
205 //------------------------------CmpFNode--------------------------------------- | |
206 // Compare 2 float values, returning condition codes (-1, 0 or 1). | |
207 // This implements the Java bytecode fcmpl, so unordered returns -1. | |
208 // Operands may not commute. | |
209 class CmpFNode : public CmpNode { | |
210 public: | |
211 CmpFNode( Node *in1, Node *in2 ) : CmpNode(in1,in2) {} | |
212 virtual int Opcode() const; | |
213 virtual const Type *sub( const Type *, const Type * ) const { ShouldNotReachHere(); return NULL; } | |
214 const Type *Value( PhaseTransform *phase ) const; | |
215 }; | |
216 | |
217 //------------------------------CmpF3Node-------------------------------------- | |
218 // Compare 2 float values, returning integer value (-1, 0 or 1). | |
219 // This implements the Java bytecode fcmpl, so unordered returns -1. | |
220 // Operands may not commute. | |
221 class CmpF3Node : public CmpFNode { | |
222 public: | |
223 CmpF3Node( Node *in1, Node *in2 ) : CmpFNode(in1,in2) { | |
224 // Since it is not consumed by Bools, it is not really a Cmp. | |
225 init_class_id(Class_Sub); | |
226 } | |
227 virtual int Opcode() const; | |
228 // Since it is not consumed by Bools, it is not really a Cmp. | |
229 virtual uint ideal_reg() const { return Op_RegI; } | |
230 }; | |
231 | |
232 | |
233 //------------------------------CmpDNode--------------------------------------- | |
234 // Compare 2 double values, returning condition codes (-1, 0 or 1). | |
235 // This implements the Java bytecode dcmpl, so unordered returns -1. | |
236 // Operands may not commute. | |
237 class CmpDNode : public CmpNode { | |
238 public: | |
239 CmpDNode( Node *in1, Node *in2 ) : CmpNode(in1,in2) {} | |
240 virtual int Opcode() const; | |
241 virtual const Type *sub( const Type *, const Type * ) const { ShouldNotReachHere(); return NULL; } | |
242 const Type *Value( PhaseTransform *phase ) const; | |
243 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
244 }; | |
245 | |
246 //------------------------------CmpD3Node-------------------------------------- | |
247 // Compare 2 double values, returning integer value (-1, 0 or 1). | |
248 // This implements the Java bytecode dcmpl, so unordered returns -1. | |
249 // Operands may not commute. | |
250 class CmpD3Node : public CmpDNode { | |
251 public: | |
252 CmpD3Node( Node *in1, Node *in2 ) : CmpDNode(in1,in2) { | |
253 // Since it is not consumed by Bools, it is not really a Cmp. | |
254 init_class_id(Class_Sub); | |
255 } | |
256 virtual int Opcode() const; | |
257 virtual uint ideal_reg() const { return Op_RegI; } | |
258 }; | |
259 | |
260 | |
261 //------------------------------BoolTest--------------------------------------- | |
262 // Convert condition codes to a boolean test value (0 or -1). | |
263 // We pick the values as 3 bits; the low order 2 bits we compare against the | |
264 // condition codes, the high bit flips the sense of the result. | |
265 struct BoolTest VALUE_OBJ_CLASS_SPEC { | |
266 enum mask { eq = 0, ne = 4, le = 5, ge = 7, lt = 3, gt = 1, illegal = 8 }; | |
267 mask _test; | |
268 BoolTest( mask btm ) : _test(btm) {} | |
269 const Type *cc2logical( const Type *CC ) const; | |
270 // Commute the test. I use a small table lookup. The table is created as | |
271 // a simple char array where each element is the ASCII version of a 'mask' | |
272 // enum from above. | |
273 mask commute( ) const { return mask("038147858"[_test]-'0'); } | |
274 mask negate( ) const { return mask(_test^4); } | |
275 bool is_canonical( ) const { return (_test == BoolTest::ne || _test == BoolTest::lt || _test == BoolTest::le); } | |
276 #ifndef PRODUCT | |
277 void dump_on(outputStream *st) const; | |
278 #endif | |
279 }; | |
280 | |
281 //------------------------------BoolNode--------------------------------------- | |
282 // A Node to convert a Condition Codes to a Logical result. | |
283 class BoolNode : public Node { | |
284 virtual uint hash() const; | |
285 virtual uint cmp( const Node &n ) const; | |
286 virtual uint size_of() const; | |
287 public: | |
288 const BoolTest _test; | |
289 BoolNode( Node *cc, BoolTest::mask t): _test(t), Node(0,cc) { | |
290 init_class_id(Class_Bool); | |
291 } | |
292 // Convert an arbitrary int value to a Bool or other suitable predicate. | |
293 static Node* make_predicate(Node* test_value, PhaseGVN* phase); | |
294 // Convert self back to an integer value. | |
295 Node* as_int_value(PhaseGVN* phase); | |
296 // Invert sense of self, returning new Bool. | |
297 BoolNode* negate(PhaseGVN* phase); | |
298 virtual int Opcode() const; | |
299 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
300 virtual const Type *Value( PhaseTransform *phase ) const; | |
301 virtual const Type *bottom_type() const { return TypeInt::BOOL; } | |
302 uint match_edge(uint idx) const { return 0; } | |
303 virtual uint ideal_reg() const { return Op_RegI; } | |
304 | |
305 bool is_counted_loop_exit_test(); | |
306 #ifndef PRODUCT | |
307 virtual void dump_spec(outputStream *st) const; | |
308 #endif | |
309 }; | |
310 | |
311 //------------------------------AbsNode---------------------------------------- | |
312 // Abstract class for absolute value. Mostly used to get a handy wrapper | |
313 // for finding this pattern in the graph. | |
314 class AbsNode : public Node { | |
315 public: | |
316 AbsNode( Node *value ) : Node(0,value) {} | |
317 }; | |
318 | |
319 //------------------------------AbsINode--------------------------------------- | |
320 // Absolute value an integer. Since a naive graph involves control flow, we | |
321 // "match" it in the ideal world (so the control flow can be removed). | |
322 class AbsINode : public AbsNode { | |
323 public: | |
324 AbsINode( Node *in1 ) : AbsNode(in1) {} | |
325 virtual int Opcode() const; | |
326 const Type *bottom_type() const { return TypeInt::INT; } | |
327 virtual uint ideal_reg() const { return Op_RegI; } | |
328 }; | |
329 | |
330 //------------------------------AbsFNode--------------------------------------- | |
331 // Absolute value a float, a common float-point idiom with a cheap hardware | |
332 // implemention on most chips. Since a naive graph involves control flow, we | |
333 // "match" it in the ideal world (so the control flow can be removed). | |
334 class AbsFNode : public AbsNode { | |
335 public: | |
336 AbsFNode( Node *in1 ) : AbsNode(in1) {} | |
337 virtual int Opcode() const; | |
338 const Type *bottom_type() const { return Type::FLOAT; } | |
339 virtual uint ideal_reg() const { return Op_RegF; } | |
340 }; | |
341 | |
342 //------------------------------AbsDNode--------------------------------------- | |
343 // Absolute value a double, a common float-point idiom with a cheap hardware | |
344 // implemention on most chips. Since a naive graph involves control flow, we | |
345 // "match" it in the ideal world (so the control flow can be removed). | |
346 class AbsDNode : public AbsNode { | |
347 public: | |
348 AbsDNode( Node *in1 ) : AbsNode(in1) {} | |
349 virtual int Opcode() const; | |
350 const Type *bottom_type() const { return Type::DOUBLE; } | |
351 virtual uint ideal_reg() const { return Op_RegD; } | |
352 }; | |
353 | |
354 | |
355 //------------------------------CmpLTMaskNode---------------------------------- | |
356 // If p < q, return -1 else return 0. Nice for flow-free idioms. | |
357 class CmpLTMaskNode : public Node { | |
358 public: | |
359 CmpLTMaskNode( Node *p, Node *q ) : Node(0, p, q) {} | |
360 virtual int Opcode() const; | |
361 const Type *bottom_type() const { return TypeInt::INT; } | |
362 virtual uint ideal_reg() const { return Op_RegI; } | |
363 }; | |
364 | |
365 | |
366 //------------------------------NegNode---------------------------------------- | |
367 class NegNode : public Node { | |
368 public: | |
369 NegNode( Node *in1 ) : Node(0,in1) {} | |
370 }; | |
371 | |
372 //------------------------------NegFNode--------------------------------------- | |
373 // Negate value a float. Negating 0.0 returns -0.0, but subtracting from | |
374 // zero returns +0.0 (per JVM spec on 'fneg' bytecode). As subtraction | |
375 // cannot be used to replace negation we have to implement negation as ideal | |
376 // node; note that negation and addition can replace subtraction. | |
377 class NegFNode : public NegNode { | |
378 public: | |
379 NegFNode( Node *in1 ) : NegNode(in1) {} | |
380 virtual int Opcode() const; | |
381 const Type *bottom_type() const { return Type::FLOAT; } | |
382 virtual uint ideal_reg() const { return Op_RegF; } | |
383 }; | |
384 | |
385 //------------------------------NegDNode--------------------------------------- | |
386 // Negate value a double. Negating 0.0 returns -0.0, but subtracting from | |
387 // zero returns +0.0 (per JVM spec on 'dneg' bytecode). As subtraction | |
388 // cannot be used to replace negation we have to implement negation as ideal | |
389 // node; note that negation and addition can replace subtraction. | |
390 class NegDNode : public NegNode { | |
391 public: | |
392 NegDNode( Node *in1 ) : NegNode(in1) {} | |
393 virtual int Opcode() const; | |
394 const Type *bottom_type() const { return Type::DOUBLE; } | |
395 virtual uint ideal_reg() const { return Op_RegD; } | |
396 }; | |
397 | |
398 //------------------------------CosDNode--------------------------------------- | |
399 // Cosinus of a double | |
400 class CosDNode : public Node { | |
401 public: | |
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402 CosDNode(Compile* C, Node *c, Node *in1) : Node(c, in1) { |
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403 init_flags(Flag_is_expensive); |
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404 C->add_expensive_node(this); |
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405 } |
0 | 406 virtual int Opcode() const; |
407 const Type *bottom_type() const { return Type::DOUBLE; } | |
408 virtual uint ideal_reg() const { return Op_RegD; } | |
409 virtual const Type *Value( PhaseTransform *phase ) const; | |
410 }; | |
411 | |
412 //------------------------------CosDNode--------------------------------------- | |
413 // Sinus of a double | |
414 class SinDNode : public Node { | |
415 public: | |
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416 SinDNode(Compile* C, Node *c, Node *in1) : Node(c, in1) { |
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417 init_flags(Flag_is_expensive); |
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418 C->add_expensive_node(this); |
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419 } |
0 | 420 virtual int Opcode() const; |
421 const Type *bottom_type() const { return Type::DOUBLE; } | |
422 virtual uint ideal_reg() const { return Op_RegD; } | |
423 virtual const Type *Value( PhaseTransform *phase ) const; | |
424 }; | |
425 | |
426 | |
427 //------------------------------TanDNode--------------------------------------- | |
428 // tangens of a double | |
429 class TanDNode : public Node { | |
430 public: | |
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431 TanDNode(Compile* C, Node *c,Node *in1) : Node(c, in1) { |
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432 init_flags(Flag_is_expensive); |
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433 C->add_expensive_node(this); |
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434 } |
0 | 435 virtual int Opcode() const; |
436 const Type *bottom_type() const { return Type::DOUBLE; } | |
437 virtual uint ideal_reg() const { return Op_RegD; } | |
438 virtual const Type *Value( PhaseTransform *phase ) const; | |
439 }; | |
440 | |
441 | |
442 //------------------------------AtanDNode-------------------------------------- | |
443 // arcus tangens of a double | |
444 class AtanDNode : public Node { | |
445 public: | |
446 AtanDNode(Node *c, Node *in1, Node *in2 ) : Node(c, in1, in2) {} | |
447 virtual int Opcode() const; | |
448 const Type *bottom_type() const { return Type::DOUBLE; } | |
449 virtual uint ideal_reg() const { return Op_RegD; } | |
450 }; | |
451 | |
452 | |
453 //------------------------------SqrtDNode-------------------------------------- | |
454 // square root a double | |
455 class SqrtDNode : public Node { | |
456 public: | |
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457 SqrtDNode(Compile* C, Node *c, Node *in1) : Node(c, in1) { |
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458 init_flags(Flag_is_expensive); |
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459 C->add_expensive_node(this); |
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460 } |
0 | 461 virtual int Opcode() const; |
462 const Type *bottom_type() const { return Type::DOUBLE; } | |
463 virtual uint ideal_reg() const { return Op_RegD; } | |
464 virtual const Type *Value( PhaseTransform *phase ) const; | |
465 }; | |
466 | |
467 //------------------------------ExpDNode--------------------------------------- | |
468 // Exponentiate a double | |
469 class ExpDNode : public Node { | |
470 public: | |
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471 ExpDNode(Compile* C, Node *c, Node *in1) : Node(c, in1) { |
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472 init_flags(Flag_is_expensive); |
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473 C->add_expensive_node(this); |
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474 } |
0 | 475 virtual int Opcode() const; |
476 const Type *bottom_type() const { return Type::DOUBLE; } | |
477 virtual uint ideal_reg() const { return Op_RegD; } | |
478 virtual const Type *Value( PhaseTransform *phase ) const; | |
479 }; | |
480 | |
481 //------------------------------LogDNode--------------------------------------- | |
482 // Log_e of a double | |
483 class LogDNode : public Node { | |
484 public: | |
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485 LogDNode(Compile* C, Node *c, Node *in1) : Node(c, in1) { |
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486 init_flags(Flag_is_expensive); |
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487 C->add_expensive_node(this); |
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488 } |
0 | 489 virtual int Opcode() const; |
490 const Type *bottom_type() const { return Type::DOUBLE; } | |
491 virtual uint ideal_reg() const { return Op_RegD; } | |
492 virtual const Type *Value( PhaseTransform *phase ) const; | |
493 }; | |
494 | |
495 //------------------------------Log10DNode--------------------------------------- | |
496 // Log_10 of a double | |
497 class Log10DNode : public Node { | |
498 public: | |
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499 Log10DNode(Compile* C, Node *c, Node *in1) : Node(c, in1) { |
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500 init_flags(Flag_is_expensive); |
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501 C->add_expensive_node(this); |
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502 } |
0 | 503 virtual int Opcode() const; |
504 const Type *bottom_type() const { return Type::DOUBLE; } | |
505 virtual uint ideal_reg() const { return Op_RegD; } | |
506 virtual const Type *Value( PhaseTransform *phase ) const; | |
507 }; | |
508 | |
509 //------------------------------PowDNode--------------------------------------- | |
510 // Raise a double to a double power | |
511 class PowDNode : public Node { | |
512 public: | |
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513 PowDNode(Compile* C, Node *c, Node *in1, Node *in2 ) : Node(c, in1, in2) { |
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514 init_flags(Flag_is_expensive); |
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515 C->add_expensive_node(this); |
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516 } |
0 | 517 virtual int Opcode() const; |
518 const Type *bottom_type() const { return Type::DOUBLE; } | |
519 virtual uint ideal_reg() const { return Op_RegD; } | |
520 virtual const Type *Value( PhaseTransform *phase ) const; | |
521 }; | |
522 | |
523 //-------------------------------ReverseBytesINode-------------------------------- | |
524 // reverse bytes of an integer | |
525 class ReverseBytesINode : public Node { | |
526 public: | |
527 ReverseBytesINode(Node *c, Node *in1) : Node(c, in1) {} | |
528 virtual int Opcode() const; | |
529 const Type *bottom_type() const { return TypeInt::INT; } | |
530 virtual uint ideal_reg() const { return Op_RegI; } | |
531 }; | |
532 | |
533 //-------------------------------ReverseBytesLNode-------------------------------- | |
534 // reverse bytes of a long | |
535 class ReverseBytesLNode : public Node { | |
536 public: | |
537 ReverseBytesLNode(Node *c, Node *in1) : Node(c, in1) {} | |
538 virtual int Opcode() const; | |
539 const Type *bottom_type() const { return TypeLong::LONG; } | |
540 virtual uint ideal_reg() const { return Op_RegL; } | |
541 }; | |
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542 |
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543 //-------------------------------ReverseBytesUSNode-------------------------------- |
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544 // reverse bytes of an unsigned short / char |
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545 class ReverseBytesUSNode : public Node { |
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546 public: |
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547 ReverseBytesUSNode(Node *c, Node *in1) : Node(c, in1) {} |
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548 virtual int Opcode() const; |
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549 const Type *bottom_type() const { return TypeInt::CHAR; } |
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550 virtual uint ideal_reg() const { return Op_RegI; } |
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551 }; |
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552 |
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553 //-------------------------------ReverseBytesSNode-------------------------------- |
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554 // reverse bytes of a short |
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555 class ReverseBytesSNode : public Node { |
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556 public: |
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557 ReverseBytesSNode(Node *c, Node *in1) : Node(c, in1) {} |
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558 virtual int Opcode() const; |
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559 const Type *bottom_type() const { return TypeInt::SHORT; } |
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560 virtual uint ideal_reg() const { return Op_RegI; } |
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561 }; |
1972 | 562 |
563 #endif // SHARE_VM_OPTO_SUBNODE_HPP |