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annotate src/share/vm/c1/c1_Instruction.hpp @ 12207:ff8a09595db3
8017230: Internal Error (jvmtiRedefineClasses.cpp:1662): guarantee(false) failed: insert_space_at() failed
Summary: Handle pending exceptions instead of firing a guarantee()
Reviewed-by: coleenp, dholmes
Contributed-by: serguei.spitsyn@oracle.com
author | sspitsyn |
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date | Fri, 13 Sep 2013 12:46:40 -0700 |
parents | 9758d9f36299 |
children | d13d7aba8c12 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2013, 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_C1_C1_INSTRUCTION_HPP |
26 #define SHARE_VM_C1_C1_INSTRUCTION_HPP | |
27 | |
28 #include "c1/c1_Compilation.hpp" | |
29 #include "c1/c1_LIR.hpp" | |
30 #include "c1/c1_ValueType.hpp" | |
31 #include "ci/ciField.hpp" | |
32 | |
0 | 33 // Predefined classes |
34 class ciField; | |
35 class ValueStack; | |
36 class InstructionPrinter; | |
37 class IRScope; | |
38 class LIR_OprDesc; | |
39 typedef LIR_OprDesc* LIR_Opr; | |
40 | |
41 | |
42 // Instruction class hierarchy | |
43 // | |
44 // All leaf classes in the class hierarchy are concrete classes | |
45 // (i.e., are instantiated). All other classes are abstract and | |
46 // serve factoring. | |
47 | |
48 class Instruction; | |
49 class Phi; | |
50 class Local; | |
51 class Constant; | |
52 class AccessField; | |
53 class LoadField; | |
54 class StoreField; | |
55 class AccessArray; | |
56 class ArrayLength; | |
57 class AccessIndexed; | |
58 class LoadIndexed; | |
59 class StoreIndexed; | |
60 class NegateOp; | |
61 class Op2; | |
62 class ArithmeticOp; | |
63 class ShiftOp; | |
64 class LogicOp; | |
65 class CompareOp; | |
66 class IfOp; | |
67 class Convert; | |
68 class NullCheck; | |
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69 class TypeCast; |
0 | 70 class OsrEntry; |
71 class ExceptionObject; | |
72 class StateSplit; | |
73 class Invoke; | |
74 class NewInstance; | |
75 class NewArray; | |
76 class NewTypeArray; | |
77 class NewObjectArray; | |
78 class NewMultiArray; | |
79 class TypeCheck; | |
80 class CheckCast; | |
81 class InstanceOf; | |
82 class AccessMonitor; | |
83 class MonitorEnter; | |
84 class MonitorExit; | |
85 class Intrinsic; | |
86 class BlockBegin; | |
87 class BlockEnd; | |
88 class Goto; | |
89 class If; | |
90 class IfInstanceOf; | |
91 class Switch; | |
92 class TableSwitch; | |
93 class LookupSwitch; | |
94 class Return; | |
95 class Throw; | |
96 class Base; | |
97 class RoundFP; | |
98 class UnsafeOp; | |
99 class UnsafeRawOp; | |
100 class UnsafeGetRaw; | |
101 class UnsafePutRaw; | |
102 class UnsafeObjectOp; | |
103 class UnsafeGetObject; | |
104 class UnsafePutObject; | |
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105 class UnsafeGetAndSetObject; |
0 | 106 class UnsafePrefetch; |
107 class UnsafePrefetchRead; | |
108 class UnsafePrefetchWrite; | |
109 class ProfileCall; | |
1783 | 110 class ProfileInvoke; |
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111 class RuntimeCall; |
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112 class MemBar; |
8860 | 113 class RangeCheckPredicate; |
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114 #ifdef ASSERT |
8860 | 115 class Assert; |
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116 #endif |
0 | 117 |
118 // A Value is a reference to the instruction creating the value | |
119 typedef Instruction* Value; | |
120 define_array(ValueArray, Value) | |
121 define_stack(Values, ValueArray) | |
122 | |
123 define_array(ValueStackArray, ValueStack*) | |
124 define_stack(ValueStackStack, ValueStackArray) | |
125 | |
126 // BlockClosure is the base class for block traversal/iteration. | |
127 | |
128 class BlockClosure: public CompilationResourceObj { | |
129 public: | |
130 virtual void block_do(BlockBegin* block) = 0; | |
131 }; | |
132 | |
133 | |
1584 | 134 // A simple closure class for visiting the values of an Instruction |
135 class ValueVisitor: public StackObj { | |
136 public: | |
137 virtual void visit(Value* v) = 0; | |
138 }; | |
139 | |
140 | |
0 | 141 // Some array and list classes |
142 define_array(BlockBeginArray, BlockBegin*) | |
143 define_stack(_BlockList, BlockBeginArray) | |
144 | |
145 class BlockList: public _BlockList { | |
146 public: | |
147 BlockList(): _BlockList() {} | |
148 BlockList(const int size): _BlockList(size) {} | |
149 BlockList(const int size, BlockBegin* init): _BlockList(size, init) {} | |
150 | |
151 void iterate_forward(BlockClosure* closure); | |
152 void iterate_backward(BlockClosure* closure); | |
153 void blocks_do(void f(BlockBegin*)); | |
1584 | 154 void values_do(ValueVisitor* f); |
0 | 155 void print(bool cfg_only = false, bool live_only = false) PRODUCT_RETURN; |
156 }; | |
157 | |
158 | |
159 // InstructionVisitors provide type-based dispatch for instructions. | |
160 // For each concrete Instruction class X, a virtual function do_X is | |
161 // provided. Functionality that needs to be implemented for all classes | |
162 // (e.g., printing, code generation) is factored out into a specialised | |
163 // visitor instead of added to the Instruction classes itself. | |
164 | |
165 class InstructionVisitor: public StackObj { | |
166 public: | |
167 virtual void do_Phi (Phi* x) = 0; | |
168 virtual void do_Local (Local* x) = 0; | |
169 virtual void do_Constant (Constant* x) = 0; | |
170 virtual void do_LoadField (LoadField* x) = 0; | |
171 virtual void do_StoreField (StoreField* x) = 0; | |
172 virtual void do_ArrayLength (ArrayLength* x) = 0; | |
173 virtual void do_LoadIndexed (LoadIndexed* x) = 0; | |
174 virtual void do_StoreIndexed (StoreIndexed* x) = 0; | |
175 virtual void do_NegateOp (NegateOp* x) = 0; | |
176 virtual void do_ArithmeticOp (ArithmeticOp* x) = 0; | |
177 virtual void do_ShiftOp (ShiftOp* x) = 0; | |
178 virtual void do_LogicOp (LogicOp* x) = 0; | |
179 virtual void do_CompareOp (CompareOp* x) = 0; | |
180 virtual void do_IfOp (IfOp* x) = 0; | |
181 virtual void do_Convert (Convert* x) = 0; | |
182 virtual void do_NullCheck (NullCheck* x) = 0; | |
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183 virtual void do_TypeCast (TypeCast* x) = 0; |
0 | 184 virtual void do_Invoke (Invoke* x) = 0; |
185 virtual void do_NewInstance (NewInstance* x) = 0; | |
186 virtual void do_NewTypeArray (NewTypeArray* x) = 0; | |
187 virtual void do_NewObjectArray (NewObjectArray* x) = 0; | |
188 virtual void do_NewMultiArray (NewMultiArray* x) = 0; | |
189 virtual void do_CheckCast (CheckCast* x) = 0; | |
190 virtual void do_InstanceOf (InstanceOf* x) = 0; | |
191 virtual void do_MonitorEnter (MonitorEnter* x) = 0; | |
192 virtual void do_MonitorExit (MonitorExit* x) = 0; | |
193 virtual void do_Intrinsic (Intrinsic* x) = 0; | |
194 virtual void do_BlockBegin (BlockBegin* x) = 0; | |
195 virtual void do_Goto (Goto* x) = 0; | |
196 virtual void do_If (If* x) = 0; | |
197 virtual void do_IfInstanceOf (IfInstanceOf* x) = 0; | |
198 virtual void do_TableSwitch (TableSwitch* x) = 0; | |
199 virtual void do_LookupSwitch (LookupSwitch* x) = 0; | |
200 virtual void do_Return (Return* x) = 0; | |
201 virtual void do_Throw (Throw* x) = 0; | |
202 virtual void do_Base (Base* x) = 0; | |
203 virtual void do_OsrEntry (OsrEntry* x) = 0; | |
204 virtual void do_ExceptionObject(ExceptionObject* x) = 0; | |
205 virtual void do_RoundFP (RoundFP* x) = 0; | |
206 virtual void do_UnsafeGetRaw (UnsafeGetRaw* x) = 0; | |
207 virtual void do_UnsafePutRaw (UnsafePutRaw* x) = 0; | |
208 virtual void do_UnsafeGetObject(UnsafeGetObject* x) = 0; | |
209 virtual void do_UnsafePutObject(UnsafePutObject* x) = 0; | |
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210 virtual void do_UnsafeGetAndSetObject(UnsafeGetAndSetObject* x) = 0; |
0 | 211 virtual void do_UnsafePrefetchRead (UnsafePrefetchRead* x) = 0; |
212 virtual void do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) = 0; | |
213 virtual void do_ProfileCall (ProfileCall* x) = 0; | |
1783 | 214 virtual void do_ProfileInvoke (ProfileInvoke* x) = 0; |
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215 virtual void do_RuntimeCall (RuntimeCall* x) = 0; |
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216 virtual void do_MemBar (MemBar* x) = 0; |
8860 | 217 virtual void do_RangeCheckPredicate(RangeCheckPredicate* x) = 0; |
218 #ifdef ASSERT | |
219 virtual void do_Assert (Assert* x) = 0; | |
220 #endif | |
0 | 221 }; |
222 | |
223 | |
224 // Hashing support | |
225 // | |
226 // Note: This hash functions affect the performance | |
227 // of ValueMap - make changes carefully! | |
228 | |
229 #define HASH1(x1 ) ((intx)(x1)) | |
230 #define HASH2(x1, x2 ) ((HASH1(x1 ) << 7) ^ HASH1(x2)) | |
231 #define HASH3(x1, x2, x3 ) ((HASH2(x1, x2 ) << 7) ^ HASH1(x3)) | |
232 #define HASH4(x1, x2, x3, x4) ((HASH3(x1, x2, x3) << 7) ^ HASH1(x4)) | |
233 | |
234 | |
235 // The following macros are used to implement instruction-specific hashing. | |
236 // By default, each instruction implements hash() and is_equal(Value), used | |
237 // for value numbering/common subexpression elimination. The default imple- | |
238 // mentation disables value numbering. Each instruction which can be value- | |
239 // numbered, should define corresponding hash() and is_equal(Value) functions | |
240 // via the macros below. The f arguments specify all the values/op codes, etc. | |
241 // that need to be identical for two instructions to be identical. | |
242 // | |
243 // Note: The default implementation of hash() returns 0 in order to indicate | |
244 // that the instruction should not be considered for value numbering. | |
245 // The currently used hash functions do not guarantee that never a 0 | |
246 // is produced. While this is still correct, it may be a performance | |
247 // bug (no value numbering for that node). However, this situation is | |
248 // so unlikely, that we are not going to handle it specially. | |
249 | |
250 #define HASHING1(class_name, enabled, f1) \ | |
251 virtual intx hash() const { \ | |
252 return (enabled) ? HASH2(name(), f1) : 0; \ | |
253 } \ | |
254 virtual bool is_equal(Value v) const { \ | |
255 if (!(enabled) ) return false; \ | |
256 class_name* _v = v->as_##class_name(); \ | |
257 if (_v == NULL ) return false; \ | |
258 if (f1 != _v->f1) return false; \ | |
259 return true; \ | |
260 } \ | |
261 | |
262 | |
263 #define HASHING2(class_name, enabled, f1, f2) \ | |
264 virtual intx hash() const { \ | |
265 return (enabled) ? HASH3(name(), f1, f2) : 0; \ | |
266 } \ | |
267 virtual bool is_equal(Value v) const { \ | |
268 if (!(enabled) ) return false; \ | |
269 class_name* _v = v->as_##class_name(); \ | |
270 if (_v == NULL ) return false; \ | |
271 if (f1 != _v->f1) return false; \ | |
272 if (f2 != _v->f2) return false; \ | |
273 return true; \ | |
274 } \ | |
275 | |
276 | |
277 #define HASHING3(class_name, enabled, f1, f2, f3) \ | |
278 virtual intx hash() const { \ | |
279 return (enabled) ? HASH4(name(), f1, f2, f3) : 0; \ | |
280 } \ | |
281 virtual bool is_equal(Value v) const { \ | |
282 if (!(enabled) ) return false; \ | |
283 class_name* _v = v->as_##class_name(); \ | |
284 if (_v == NULL ) return false; \ | |
285 if (f1 != _v->f1) return false; \ | |
286 if (f2 != _v->f2) return false; \ | |
287 if (f3 != _v->f3) return false; \ | |
288 return true; \ | |
289 } \ | |
290 | |
291 | |
292 // The mother of all instructions... | |
293 | |
294 class Instruction: public CompilationResourceObj { | |
295 private: | |
296 int _id; // the unique instruction id | |
1819 | 297 #ifndef PRODUCT |
298 int _printable_bci; // the bci of the instruction for printing | |
299 #endif | |
0 | 300 int _use_count; // the number of instructions refering to this value (w/o prev/next); only roots can have use count = 0 or > 1 |
301 int _pin_state; // set of PinReason describing the reason for pinning | |
302 ValueType* _type; // the instruction value type | |
303 Instruction* _next; // the next instruction if any (NULL for BlockEnd instructions) | |
304 Instruction* _subst; // the substitution instruction if any | |
305 LIR_Opr _operand; // LIR specific information | |
306 unsigned int _flags; // Flag bits | |
307 | |
1819 | 308 ValueStack* _state_before; // Copy of state with input operands still on stack (or NULL) |
309 ValueStack* _exception_state; // Copy of state for exception handling | |
0 | 310 XHandlers* _exception_handlers; // Flat list of exception handlers covering this instruction |
311 | |
312 friend class UseCountComputer; | |
1584 | 313 friend class BlockBegin; |
0 | 314 |
1819 | 315 void update_exception_state(ValueStack* state); |
316 | |
8860 | 317 protected: |
318 BlockBegin* _block; // Block that contains this instruction | |
319 | |
0 | 320 void set_type(ValueType* type) { |
321 assert(type != NULL, "type must exist"); | |
322 _type = type; | |
323 } | |
324 | |
325 public: | |
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326 void* operator new(size_t size) throw() { |
1584 | 327 Compilation* c = Compilation::current(); |
328 void* res = c->arena()->Amalloc(size); | |
329 ((Instruction*)res)->_id = c->get_next_id(); | |
330 return res; | |
331 } | |
332 | |
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333 static const int no_bci = -99; |
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334 |
0 | 335 enum InstructionFlag { |
336 NeedsNullCheckFlag = 0, | |
337 CanTrapFlag, | |
338 DirectCompareFlag, | |
339 IsEliminatedFlag, | |
340 IsSafepointFlag, | |
341 IsStaticFlag, | |
342 IsStrictfpFlag, | |
343 NeedsStoreCheckFlag, | |
344 NeedsWriteBarrierFlag, | |
345 PreservesStateFlag, | |
346 TargetIsFinalFlag, | |
347 TargetIsLoadedFlag, | |
348 TargetIsStrictfpFlag, | |
349 UnorderedIsTrueFlag, | |
350 NeedsPatchingFlag, | |
351 ThrowIncompatibleClassChangeErrorFlag, | |
352 ProfileMDOFlag, | |
1819 | 353 IsLinkedInBlockFlag, |
8860 | 354 NeedsRangeCheckFlag, |
355 InWorkListFlag, | |
356 DeoptimizeOnException, | |
0 | 357 InstructionLastFlag |
358 }; | |
359 | |
360 public: | |
361 bool check_flag(InstructionFlag id) const { return (_flags & (1 << id)) != 0; } | |
362 void set_flag(InstructionFlag id, bool f) { _flags = f ? (_flags | (1 << id)) : (_flags & ~(1 << id)); }; | |
363 | |
364 // 'globally' used condition values | |
365 enum Condition { | |
8860 | 366 eql, neq, lss, leq, gtr, geq, aeq, beq |
0 | 367 }; |
368 | |
369 // Instructions may be pinned for many reasons and under certain conditions | |
370 // with enough knowledge it's possible to safely unpin them. | |
371 enum PinReason { | |
372 PinUnknown = 1 << 0 | |
373 , PinExplicitNullCheck = 1 << 3 | |
374 , PinStackForStateSplit= 1 << 12 | |
375 , PinStateSplitConstructor= 1 << 13 | |
376 , PinGlobalValueNumbering= 1 << 14 | |
377 }; | |
378 | |
379 static Condition mirror(Condition cond); | |
380 static Condition negate(Condition cond); | |
381 | |
382 // initialization | |
1584 | 383 static int number_of_instructions() { |
384 return Compilation::current()->number_of_instructions(); | |
385 } | |
0 | 386 |
387 // creation | |
1824 | 388 Instruction(ValueType* type, ValueStack* state_before = NULL, bool type_is_constant = false) |
1819 | 389 : _use_count(0) |
390 #ifndef PRODUCT | |
391 , _printable_bci(-99) | |
392 #endif | |
0 | 393 , _pin_state(0) |
394 , _type(type) | |
395 , _next(NULL) | |
8860 | 396 , _block(NULL) |
0 | 397 , _subst(NULL) |
398 , _flags(0) | |
399 , _operand(LIR_OprFact::illegalOpr) | |
1819 | 400 , _state_before(state_before) |
0 | 401 , _exception_handlers(NULL) |
402 { | |
1819 | 403 check_state(state_before); |
0 | 404 assert(type != NULL && (!type->is_constant() || type_is_constant), "type must exist"); |
1819 | 405 update_exception_state(_state_before); |
0 | 406 } |
407 | |
408 // accessors | |
409 int id() const { return _id; } | |
1819 | 410 #ifndef PRODUCT |
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411 bool has_printable_bci() const { return _printable_bci != -99; } |
1819 | 412 int printable_bci() const { assert(has_printable_bci(), "_printable_bci should have been set"); return _printable_bci; } |
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413 void set_printable_bci(int bci) { _printable_bci = bci; } |
1819 | 414 #endif |
8860 | 415 int dominator_depth(); |
0 | 416 int use_count() const { return _use_count; } |
417 int pin_state() const { return _pin_state; } | |
418 bool is_pinned() const { return _pin_state != 0 || PinAllInstructions; } | |
419 ValueType* type() const { return _type; } | |
8860 | 420 BlockBegin *block() const { return _block; } |
421 Instruction* prev(); // use carefully, expensive operation | |
0 | 422 Instruction* next() const { return _next; } |
423 bool has_subst() const { return _subst != NULL; } | |
424 Instruction* subst() { return _subst == NULL ? this : _subst->subst(); } | |
425 LIR_Opr operand() const { return _operand; } | |
426 | |
427 void set_needs_null_check(bool f) { set_flag(NeedsNullCheckFlag, f); } | |
428 bool needs_null_check() const { return check_flag(NeedsNullCheckFlag); } | |
1819 | 429 bool is_linked() const { return check_flag(IsLinkedInBlockFlag); } |
430 bool can_be_linked() { return as_Local() == NULL && as_Phi() == NULL; } | |
0 | 431 |
432 bool has_uses() const { return use_count() > 0; } | |
1819 | 433 ValueStack* state_before() const { return _state_before; } |
434 ValueStack* exception_state() const { return _exception_state; } | |
435 virtual bool needs_exception_state() const { return true; } | |
0 | 436 XHandlers* exception_handlers() const { return _exception_handlers; } |
437 | |
438 // manipulation | |
439 void pin(PinReason reason) { _pin_state |= reason; } | |
440 void pin() { _pin_state |= PinUnknown; } | |
441 // DANGEROUS: only used by EliminateStores | |
442 void unpin(PinReason reason) { assert((reason & PinUnknown) == 0, "can't unpin unknown state"); _pin_state &= ~reason; } | |
1819 | 443 |
444 Instruction* set_next(Instruction* next) { | |
445 assert(next->has_printable_bci(), "_printable_bci should have been set"); | |
446 assert(next != NULL, "must not be NULL"); | |
447 assert(as_BlockEnd() == NULL, "BlockEnd instructions must have no next"); | |
448 assert(next->can_be_linked(), "shouldn't link these instructions into list"); | |
449 | |
8860 | 450 BlockBegin *block = this->block(); |
451 next->_block = block; | |
452 | |
1819 | 453 next->set_flag(Instruction::IsLinkedInBlockFlag, true); |
454 _next = next; | |
455 return next; | |
456 } | |
0 | 457 |
458 Instruction* set_next(Instruction* next, int bci) { | |
1819 | 459 #ifndef PRODUCT |
460 next->set_printable_bci(bci); | |
461 #endif | |
462 return set_next(next); | |
0 | 463 } |
464 | |
8860 | 465 // when blocks are merged |
466 void fixup_block_pointers() { | |
467 Instruction *cur = next()->next(); // next()'s block is set in set_next | |
468 while (cur && cur->_block != block()) { | |
469 cur->_block = block(); | |
470 cur = cur->next(); | |
471 } | |
472 } | |
473 | |
474 Instruction *insert_after(Instruction *i) { | |
475 Instruction* n = _next; | |
476 set_next(i); | |
477 i->set_next(n); | |
478 return _next; | |
479 } | |
480 | |
481 Instruction *insert_after_same_bci(Instruction *i) { | |
482 #ifndef PRODUCT | |
483 i->set_printable_bci(printable_bci()); | |
484 #endif | |
485 return insert_after(i); | |
486 } | |
487 | |
0 | 488 void set_subst(Instruction* subst) { |
489 assert(subst == NULL || | |
490 type()->base() == subst->type()->base() || | |
491 subst->type()->base() == illegalType, "type can't change"); | |
492 _subst = subst; | |
493 } | |
494 void set_exception_handlers(XHandlers *xhandlers) { _exception_handlers = xhandlers; } | |
1819 | 495 void set_exception_state(ValueStack* s) { check_state(s); _exception_state = s; } |
8860 | 496 void set_state_before(ValueStack* s) { check_state(s); _state_before = s; } |
0 | 497 |
498 // machine-specifics | |
499 void set_operand(LIR_Opr operand) { assert(operand != LIR_OprFact::illegalOpr, "operand must exist"); _operand = operand; } | |
500 void clear_operand() { _operand = LIR_OprFact::illegalOpr; } | |
501 | |
502 // generic | |
503 virtual Instruction* as_Instruction() { return this; } // to satisfy HASHING1 macro | |
1899 | 504 virtual Phi* as_Phi() { return NULL; } |
0 | 505 virtual Local* as_Local() { return NULL; } |
506 virtual Constant* as_Constant() { return NULL; } | |
507 virtual AccessField* as_AccessField() { return NULL; } | |
508 virtual LoadField* as_LoadField() { return NULL; } | |
509 virtual StoreField* as_StoreField() { return NULL; } | |
510 virtual AccessArray* as_AccessArray() { return NULL; } | |
511 virtual ArrayLength* as_ArrayLength() { return NULL; } | |
512 virtual AccessIndexed* as_AccessIndexed() { return NULL; } | |
513 virtual LoadIndexed* as_LoadIndexed() { return NULL; } | |
514 virtual StoreIndexed* as_StoreIndexed() { return NULL; } | |
515 virtual NegateOp* as_NegateOp() { return NULL; } | |
516 virtual Op2* as_Op2() { return NULL; } | |
517 virtual ArithmeticOp* as_ArithmeticOp() { return NULL; } | |
518 virtual ShiftOp* as_ShiftOp() { return NULL; } | |
519 virtual LogicOp* as_LogicOp() { return NULL; } | |
520 virtual CompareOp* as_CompareOp() { return NULL; } | |
521 virtual IfOp* as_IfOp() { return NULL; } | |
522 virtual Convert* as_Convert() { return NULL; } | |
523 virtual NullCheck* as_NullCheck() { return NULL; } | |
524 virtual OsrEntry* as_OsrEntry() { return NULL; } | |
525 virtual StateSplit* as_StateSplit() { return NULL; } | |
526 virtual Invoke* as_Invoke() { return NULL; } | |
527 virtual NewInstance* as_NewInstance() { return NULL; } | |
528 virtual NewArray* as_NewArray() { return NULL; } | |
529 virtual NewTypeArray* as_NewTypeArray() { return NULL; } | |
530 virtual NewObjectArray* as_NewObjectArray() { return NULL; } | |
531 virtual NewMultiArray* as_NewMultiArray() { return NULL; } | |
532 virtual TypeCheck* as_TypeCheck() { return NULL; } | |
533 virtual CheckCast* as_CheckCast() { return NULL; } | |
534 virtual InstanceOf* as_InstanceOf() { return NULL; } | |
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535 virtual TypeCast* as_TypeCast() { return NULL; } |
0 | 536 virtual AccessMonitor* as_AccessMonitor() { return NULL; } |
537 virtual MonitorEnter* as_MonitorEnter() { return NULL; } | |
538 virtual MonitorExit* as_MonitorExit() { return NULL; } | |
539 virtual Intrinsic* as_Intrinsic() { return NULL; } | |
540 virtual BlockBegin* as_BlockBegin() { return NULL; } | |
541 virtual BlockEnd* as_BlockEnd() { return NULL; } | |
542 virtual Goto* as_Goto() { return NULL; } | |
543 virtual If* as_If() { return NULL; } | |
544 virtual IfInstanceOf* as_IfInstanceOf() { return NULL; } | |
545 virtual TableSwitch* as_TableSwitch() { return NULL; } | |
546 virtual LookupSwitch* as_LookupSwitch() { return NULL; } | |
547 virtual Return* as_Return() { return NULL; } | |
548 virtual Throw* as_Throw() { return NULL; } | |
549 virtual Base* as_Base() { return NULL; } | |
550 virtual RoundFP* as_RoundFP() { return NULL; } | |
551 virtual ExceptionObject* as_ExceptionObject() { return NULL; } | |
552 virtual UnsafeOp* as_UnsafeOp() { return NULL; } | |
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553 virtual ProfileInvoke* as_ProfileInvoke() { return NULL; } |
8860 | 554 virtual RangeCheckPredicate* as_RangeCheckPredicate() { return NULL; } |
555 | |
556 #ifdef ASSERT | |
557 virtual Assert* as_Assert() { return NULL; } | |
558 #endif | |
0 | 559 |
560 virtual void visit(InstructionVisitor* v) = 0; | |
561 | |
562 virtual bool can_trap() const { return false; } | |
563 | |
1584 | 564 virtual void input_values_do(ValueVisitor* f) = 0; |
1819 | 565 virtual void state_values_do(ValueVisitor* f); |
1584 | 566 virtual void other_values_do(ValueVisitor* f) { /* usually no other - override on demand */ } |
567 void values_do(ValueVisitor* f) { input_values_do(f); state_values_do(f); other_values_do(f); } | |
0 | 568 |
569 virtual ciType* exact_type() const { return NULL; } | |
570 virtual ciType* declared_type() const { return NULL; } | |
571 | |
572 // hashing | |
573 virtual const char* name() const = 0; | |
574 HASHING1(Instruction, false, id()) // hashing disabled by default | |
575 | |
576 // debugging | |
1819 | 577 static void check_state(ValueStack* state) PRODUCT_RETURN; |
0 | 578 void print() PRODUCT_RETURN; |
579 void print_line() PRODUCT_RETURN; | |
580 void print(InstructionPrinter& ip) PRODUCT_RETURN; | |
581 }; | |
582 | |
583 | |
584 // The following macros are used to define base (i.e., non-leaf) | |
585 // and leaf instruction classes. They define class-name related | |
586 // generic functionality in one place. | |
587 | |
588 #define BASE(class_name, super_class_name) \ | |
589 class class_name: public super_class_name { \ | |
590 public: \ | |
591 virtual class_name* as_##class_name() { return this; } \ | |
592 | |
593 | |
594 #define LEAF(class_name, super_class_name) \ | |
595 BASE(class_name, super_class_name) \ | |
596 public: \ | |
597 virtual const char* name() const { return #class_name; } \ | |
598 virtual void visit(InstructionVisitor* v) { v->do_##class_name(this); } \ | |
599 | |
600 | |
601 // Debugging support | |
602 | |
1584 | 603 |
0 | 604 #ifdef ASSERT |
1584 | 605 class AssertValues: public ValueVisitor { |
606 void visit(Value* x) { assert((*x) != NULL, "value must exist"); } | |
607 }; | |
608 #define ASSERT_VALUES { AssertValues assert_value; values_do(&assert_value); } | |
0 | 609 #else |
610 #define ASSERT_VALUES | |
611 #endif // ASSERT | |
612 | |
613 | |
614 // A Phi is a phi function in the sense of SSA form. It stands for | |
615 // the value of a local variable at the beginning of a join block. | |
616 // A Phi consists of n operands, one for every incoming branch. | |
617 | |
618 LEAF(Phi, Instruction) | |
619 private: | |
620 int _pf_flags; // the flags of the phi function | |
621 int _index; // to value on operand stack (index < 0) or to local | |
622 public: | |
623 // creation | |
624 Phi(ValueType* type, BlockBegin* b, int index) | |
625 : Instruction(type->base()) | |
626 , _pf_flags(0) | |
627 , _index(index) | |
628 { | |
8860 | 629 _block = b; |
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630 NOT_PRODUCT(set_printable_bci(Value(b)->printable_bci())); |
0 | 631 if (type->is_illegal()) { |
632 make_illegal(); | |
633 } | |
634 } | |
635 | |
636 // flags | |
637 enum Flag { | |
638 no_flag = 0, | |
639 visited = 1 << 0, | |
640 cannot_simplify = 1 << 1 | |
641 }; | |
642 | |
643 // accessors | |
644 bool is_local() const { return _index >= 0; } | |
645 bool is_on_stack() const { return !is_local(); } | |
646 int local_index() const { assert(is_local(), ""); return _index; } | |
647 int stack_index() const { assert(is_on_stack(), ""); return -(_index+1); } | |
648 | |
649 Value operand_at(int i) const; | |
650 int operand_count() const; | |
651 | |
652 void set(Flag f) { _pf_flags |= f; } | |
653 void clear(Flag f) { _pf_flags &= ~f; } | |
654 bool is_set(Flag f) const { return (_pf_flags & f) != 0; } | |
655 | |
656 // Invalidates phis corresponding to merges of locals of two different types | |
657 // (these should never be referenced, otherwise the bytecodes are illegal) | |
658 void make_illegal() { | |
659 set(cannot_simplify); | |
660 set_type(illegalType); | |
661 } | |
662 | |
663 bool is_illegal() const { | |
664 return type()->is_illegal(); | |
665 } | |
666 | |
667 // generic | |
1584 | 668 virtual void input_values_do(ValueVisitor* f) { |
0 | 669 } |
670 }; | |
671 | |
672 | |
673 // A local is a placeholder for an incoming argument to a function call. | |
674 LEAF(Local, Instruction) | |
675 private: | |
676 int _java_index; // the local index within the method to which the local belongs | |
2446 | 677 ciType* _declared_type; |
0 | 678 public: |
679 // creation | |
2446 | 680 Local(ciType* declared, ValueType* type, int index) |
0 | 681 : Instruction(type) |
682 , _java_index(index) | |
2446 | 683 , _declared_type(declared) |
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684 { |
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685 NOT_PRODUCT(set_printable_bci(-1)); |
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686 } |
0 | 687 |
688 // accessors | |
689 int java_index() const { return _java_index; } | |
690 | |
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691 virtual ciType* declared_type() const { return _declared_type; } |
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692 virtual ciType* exact_type() const; |
2446 | 693 |
0 | 694 // generic |
1584 | 695 virtual void input_values_do(ValueVisitor* f) { /* no values */ } |
0 | 696 }; |
697 | |
698 | |
699 LEAF(Constant, Instruction) | |
700 public: | |
701 // creation | |
702 Constant(ValueType* type): | |
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703 Instruction(type, NULL, /*type_is_constant*/ true) |
1819 | 704 { |
0 | 705 assert(type->is_constant(), "must be a constant"); |
706 } | |
707 | |
1819 | 708 Constant(ValueType* type, ValueStack* state_before): |
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709 Instruction(type, state_before, /*type_is_constant*/ true) |
1819 | 710 { |
711 assert(state_before != NULL, "only used for constants which need patching"); | |
0 | 712 assert(type->is_constant(), "must be a constant"); |
713 // since it's patching it needs to be pinned | |
714 pin(); | |
715 } | |
716 | |
8860 | 717 // generic |
1819 | 718 virtual bool can_trap() const { return state_before() != NULL; } |
1584 | 719 virtual void input_values_do(ValueVisitor* f) { /* no values */ } |
0 | 720 |
721 virtual intx hash() const; | |
722 virtual bool is_equal(Value v) const; | |
723 | |
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724 virtual ciType* exact_type() const; |
1899 | 725 |
726 enum CompareResult { not_comparable = -1, cond_false, cond_true }; | |
727 | |
728 virtual CompareResult compare(Instruction::Condition condition, Value right) const; | |
729 BlockBegin* compare(Instruction::Condition cond, Value right, | |
730 BlockBegin* true_sux, BlockBegin* false_sux) const { | |
731 switch (compare(cond, right)) { | |
732 case not_comparable: | |
733 return NULL; | |
734 case cond_false: | |
735 return false_sux; | |
736 case cond_true: | |
737 return true_sux; | |
738 default: | |
739 ShouldNotReachHere(); | |
740 return NULL; | |
741 } | |
742 } | |
0 | 743 }; |
744 | |
745 | |
746 BASE(AccessField, Instruction) | |
747 private: | |
748 Value _obj; | |
749 int _offset; | |
750 ciField* _field; | |
751 NullCheck* _explicit_null_check; // For explicit null check elimination | |
752 | |
753 public: | |
754 // creation | |
1819 | 755 AccessField(Value obj, int offset, ciField* field, bool is_static, |
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756 ValueStack* state_before, bool needs_patching) |
1819 | 757 : Instruction(as_ValueType(field->type()->basic_type()), state_before) |
0 | 758 , _obj(obj) |
759 , _offset(offset) | |
760 , _field(field) | |
761 , _explicit_null_check(NULL) | |
762 { | |
763 set_needs_null_check(!is_static); | |
764 set_flag(IsStaticFlag, is_static); | |
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765 set_flag(NeedsPatchingFlag, needs_patching); |
0 | 766 ASSERT_VALUES |
767 // pin of all instructions with memory access | |
768 pin(); | |
769 } | |
770 | |
771 // accessors | |
772 Value obj() const { return _obj; } | |
773 int offset() const { return _offset; } | |
774 ciField* field() const { return _field; } | |
775 BasicType field_type() const { return _field->type()->basic_type(); } | |
776 bool is_static() const { return check_flag(IsStaticFlag); } | |
777 NullCheck* explicit_null_check() const { return _explicit_null_check; } | |
778 bool needs_patching() const { return check_flag(NeedsPatchingFlag); } | |
779 | |
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780 // Unresolved getstatic and putstatic can cause initialization. |
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781 // Technically it occurs at the Constant that materializes the base |
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782 // of the static fields but it's simpler to model it here. |
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783 bool is_init_point() const { return is_static() && (needs_patching() || !_field->holder()->is_initialized()); } |
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784 |
0 | 785 // manipulation |
1819 | 786 |
0 | 787 // Under certain circumstances, if a previous NullCheck instruction |
788 // proved the target object non-null, we can eliminate the explicit | |
789 // null check and do an implicit one, simply specifying the debug | |
790 // information from the NullCheck. This field should only be consulted | |
791 // if needs_null_check() is true. | |
792 void set_explicit_null_check(NullCheck* check) { _explicit_null_check = check; } | |
793 | |
794 // generic | |
795 virtual bool can_trap() const { return needs_null_check() || needs_patching(); } | |
1584 | 796 virtual void input_values_do(ValueVisitor* f) { f->visit(&_obj); } |
0 | 797 }; |
798 | |
799 | |
800 LEAF(LoadField, AccessField) | |
801 public: | |
802 // creation | |
1819 | 803 LoadField(Value obj, int offset, ciField* field, bool is_static, |
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804 ValueStack* state_before, bool needs_patching) |
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805 : AccessField(obj, offset, field, is_static, state_before, needs_patching) |
0 | 806 {} |
807 | |
808 ciType* declared_type() const; | |
809 ciType* exact_type() const; | |
810 | |
811 // generic | |
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812 HASHING2(LoadField, !needs_patching() && !field()->is_volatile(), obj()->subst(), offset()) // cannot be eliminated if needs patching or if volatile |
0 | 813 }; |
814 | |
815 | |
816 LEAF(StoreField, AccessField) | |
817 private: | |
818 Value _value; | |
819 | |
820 public: | |
821 // creation | |
1819 | 822 StoreField(Value obj, int offset, ciField* field, Value value, bool is_static, |
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823 ValueStack* state_before, bool needs_patching) |
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824 : AccessField(obj, offset, field, is_static, state_before, needs_patching) |
0 | 825 , _value(value) |
826 { | |
827 set_flag(NeedsWriteBarrierFlag, as_ValueType(field_type())->is_object()); | |
828 ASSERT_VALUES | |
829 pin(); | |
830 } | |
831 | |
832 // accessors | |
833 Value value() const { return _value; } | |
834 bool needs_write_barrier() const { return check_flag(NeedsWriteBarrierFlag); } | |
835 | |
836 // generic | |
1584 | 837 virtual void input_values_do(ValueVisitor* f) { AccessField::input_values_do(f); f->visit(&_value); } |
0 | 838 }; |
839 | |
840 | |
841 BASE(AccessArray, Instruction) | |
842 private: | |
843 Value _array; | |
844 | |
845 public: | |
846 // creation | |
1819 | 847 AccessArray(ValueType* type, Value array, ValueStack* state_before) |
848 : Instruction(type, state_before) | |
0 | 849 , _array(array) |
1819 | 850 { |
0 | 851 set_needs_null_check(true); |
852 ASSERT_VALUES | |
853 pin(); // instruction with side effect (null exception or range check throwing) | |
854 } | |
855 | |
856 Value array() const { return _array; } | |
857 | |
858 // generic | |
859 virtual bool can_trap() const { return needs_null_check(); } | |
1584 | 860 virtual void input_values_do(ValueVisitor* f) { f->visit(&_array); } |
0 | 861 }; |
862 | |
863 | |
864 LEAF(ArrayLength, AccessArray) | |
865 private: | |
866 NullCheck* _explicit_null_check; // For explicit null check elimination | |
867 | |
868 public: | |
869 // creation | |
1819 | 870 ArrayLength(Value array, ValueStack* state_before) |
871 : AccessArray(intType, array, state_before) | |
0 | 872 , _explicit_null_check(NULL) {} |
873 | |
874 // accessors | |
875 NullCheck* explicit_null_check() const { return _explicit_null_check; } | |
876 | |
877 // setters | |
878 // See LoadField::set_explicit_null_check for documentation | |
879 void set_explicit_null_check(NullCheck* check) { _explicit_null_check = check; } | |
880 | |
881 // generic | |
882 HASHING1(ArrayLength, true, array()->subst()) | |
883 }; | |
884 | |
885 | |
886 BASE(AccessIndexed, AccessArray) | |
887 private: | |
888 Value _index; | |
889 Value _length; | |
890 BasicType _elt_type; | |
891 | |
892 public: | |
893 // creation | |
1819 | 894 AccessIndexed(Value array, Value index, Value length, BasicType elt_type, ValueStack* state_before) |
895 : AccessArray(as_ValueType(elt_type), array, state_before) | |
0 | 896 , _index(index) |
897 , _length(length) | |
898 , _elt_type(elt_type) | |
899 { | |
8860 | 900 set_flag(Instruction::NeedsRangeCheckFlag, true); |
0 | 901 ASSERT_VALUES |
902 } | |
903 | |
904 // accessors | |
905 Value index() const { return _index; } | |
906 Value length() const { return _length; } | |
907 BasicType elt_type() const { return _elt_type; } | |
908 | |
8860 | 909 void clear_length() { _length = NULL; } |
0 | 910 // perform elimination of range checks involving constants |
911 bool compute_needs_range_check(); | |
912 | |
913 // generic | |
1584 | 914 virtual void input_values_do(ValueVisitor* f) { AccessArray::input_values_do(f); f->visit(&_index); if (_length != NULL) f->visit(&_length); } |
0 | 915 }; |
916 | |
917 | |
918 LEAF(LoadIndexed, AccessIndexed) | |
919 private: | |
920 NullCheck* _explicit_null_check; // For explicit null check elimination | |
921 | |
922 public: | |
923 // creation | |
1819 | 924 LoadIndexed(Value array, Value index, Value length, BasicType elt_type, ValueStack* state_before) |
925 : AccessIndexed(array, index, length, elt_type, state_before) | |
0 | 926 , _explicit_null_check(NULL) {} |
927 | |
928 // accessors | |
929 NullCheck* explicit_null_check() const { return _explicit_null_check; } | |
930 | |
931 // setters | |
932 // See LoadField::set_explicit_null_check for documentation | |
933 void set_explicit_null_check(NullCheck* check) { _explicit_null_check = check; } | |
934 | |
935 ciType* exact_type() const; | |
936 ciType* declared_type() const; | |
937 | |
938 // generic | |
939 HASHING2(LoadIndexed, true, array()->subst(), index()->subst()) | |
940 }; | |
941 | |
942 | |
943 LEAF(StoreIndexed, AccessIndexed) | |
944 private: | |
945 Value _value; | |
946 | |
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947 ciMethod* _profiled_method; |
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948 int _profiled_bci; |
0 | 949 public: |
950 // creation | |
1819 | 951 StoreIndexed(Value array, Value index, Value length, BasicType elt_type, Value value, ValueStack* state_before) |
952 : AccessIndexed(array, index, length, elt_type, state_before) | |
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953 , _value(value), _profiled_method(NULL), _profiled_bci(0) |
0 | 954 { |
955 set_flag(NeedsWriteBarrierFlag, (as_ValueType(elt_type)->is_object())); | |
956 set_flag(NeedsStoreCheckFlag, (as_ValueType(elt_type)->is_object())); | |
957 ASSERT_VALUES | |
958 pin(); | |
959 } | |
960 | |
961 // accessors | |
962 Value value() const { return _value; } | |
963 bool needs_write_barrier() const { return check_flag(NeedsWriteBarrierFlag); } | |
964 bool needs_store_check() const { return check_flag(NeedsStoreCheckFlag); } | |
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965 // Helpers for MethodData* profiling |
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966 void set_should_profile(bool value) { set_flag(ProfileMDOFlag, value); } |
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967 void set_profiled_method(ciMethod* method) { _profiled_method = method; } |
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968 void set_profiled_bci(int bci) { _profiled_bci = bci; } |
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969 bool should_profile() const { return check_flag(ProfileMDOFlag); } |
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970 ciMethod* profiled_method() const { return _profiled_method; } |
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971 int profiled_bci() const { return _profiled_bci; } |
0 | 972 // generic |
1584 | 973 virtual void input_values_do(ValueVisitor* f) { AccessIndexed::input_values_do(f); f->visit(&_value); } |
0 | 974 }; |
975 | |
976 | |
977 LEAF(NegateOp, Instruction) | |
978 private: | |
979 Value _x; | |
980 | |
981 public: | |
982 // creation | |
983 NegateOp(Value x) : Instruction(x->type()->base()), _x(x) { | |
984 ASSERT_VALUES | |
985 } | |
986 | |
987 // accessors | |
988 Value x() const { return _x; } | |
989 | |
990 // generic | |
1584 | 991 virtual void input_values_do(ValueVisitor* f) { f->visit(&_x); } |
0 | 992 }; |
993 | |
994 | |
995 BASE(Op2, Instruction) | |
996 private: | |
997 Bytecodes::Code _op; | |
998 Value _x; | |
999 Value _y; | |
1000 | |
1001 public: | |
1002 // creation | |
1819 | 1003 Op2(ValueType* type, Bytecodes::Code op, Value x, Value y, ValueStack* state_before = NULL) |
1004 : Instruction(type, state_before) | |
1005 , _op(op) | |
1006 , _x(x) | |
1007 , _y(y) | |
1008 { | |
0 | 1009 ASSERT_VALUES |
1010 } | |
1011 | |
1012 // accessors | |
1013 Bytecodes::Code op() const { return _op; } | |
1014 Value x() const { return _x; } | |
1015 Value y() const { return _y; } | |
1016 | |
1017 // manipulators | |
1018 void swap_operands() { | |
1019 assert(is_commutative(), "operation must be commutative"); | |
1020 Value t = _x; _x = _y; _y = t; | |
1021 } | |
1022 | |
1023 // generic | |
1024 virtual bool is_commutative() const { return false; } | |
1584 | 1025 virtual void input_values_do(ValueVisitor* f) { f->visit(&_x); f->visit(&_y); } |
0 | 1026 }; |
1027 | |
1028 | |
1029 LEAF(ArithmeticOp, Op2) | |
1030 public: | |
1031 // creation | |
1819 | 1032 ArithmeticOp(Bytecodes::Code op, Value x, Value y, bool is_strictfp, ValueStack* state_before) |
1033 : Op2(x->type()->meet(y->type()), op, x, y, state_before) | |
1034 { | |
0 | 1035 set_flag(IsStrictfpFlag, is_strictfp); |
1036 if (can_trap()) pin(); | |
1037 } | |
1038 | |
1039 // accessors | |
1040 bool is_strictfp() const { return check_flag(IsStrictfpFlag); } | |
1041 | |
1042 // generic | |
1043 virtual bool is_commutative() const; | |
1044 virtual bool can_trap() const; | |
1045 HASHING3(Op2, true, op(), x()->subst(), y()->subst()) | |
1046 }; | |
1047 | |
1048 | |
1049 LEAF(ShiftOp, Op2) | |
1050 public: | |
1051 // creation | |
1052 ShiftOp(Bytecodes::Code op, Value x, Value s) : Op2(x->type()->base(), op, x, s) {} | |
1053 | |
1054 // generic | |
1055 HASHING3(Op2, true, op(), x()->subst(), y()->subst()) | |
1056 }; | |
1057 | |
1058 | |
1059 LEAF(LogicOp, Op2) | |
1060 public: | |
1061 // creation | |
1062 LogicOp(Bytecodes::Code op, Value x, Value y) : Op2(x->type()->meet(y->type()), op, x, y) {} | |
1063 | |
1064 // generic | |
1065 virtual bool is_commutative() const; | |
1066 HASHING3(Op2, true, op(), x()->subst(), y()->subst()) | |
1067 }; | |
1068 | |
1069 | |
1070 LEAF(CompareOp, Op2) | |
1071 public: | |
1072 // creation | |
1073 CompareOp(Bytecodes::Code op, Value x, Value y, ValueStack* state_before) | |
1819 | 1074 : Op2(intType, op, x, y, state_before) |
0 | 1075 {} |
1076 | |
1077 // generic | |
1078 HASHING3(Op2, true, op(), x()->subst(), y()->subst()) | |
1079 }; | |
1080 | |
1081 | |
1082 LEAF(IfOp, Op2) | |
1083 private: | |
1084 Value _tval; | |
1085 Value _fval; | |
1086 | |
1087 public: | |
1088 // creation | |
1089 IfOp(Value x, Condition cond, Value y, Value tval, Value fval) | |
1090 : Op2(tval->type()->meet(fval->type()), (Bytecodes::Code)cond, x, y) | |
1091 , _tval(tval) | |
1092 , _fval(fval) | |
1093 { | |
1094 ASSERT_VALUES | |
1095 assert(tval->type()->tag() == fval->type()->tag(), "types must match"); | |
1096 } | |
1097 | |
1098 // accessors | |
1099 virtual bool is_commutative() const; | |
1100 Bytecodes::Code op() const { ShouldNotCallThis(); return Bytecodes::_illegal; } | |
1101 Condition cond() const { return (Condition)Op2::op(); } | |
1102 Value tval() const { return _tval; } | |
1103 Value fval() const { return _fval; } | |
1104 | |
1105 // generic | |
1584 | 1106 virtual void input_values_do(ValueVisitor* f) { Op2::input_values_do(f); f->visit(&_tval); f->visit(&_fval); } |
0 | 1107 }; |
1108 | |
1109 | |
1110 LEAF(Convert, Instruction) | |
1111 private: | |
1112 Bytecodes::Code _op; | |
1113 Value _value; | |
1114 | |
1115 public: | |
1116 // creation | |
1117 Convert(Bytecodes::Code op, Value value, ValueType* to_type) : Instruction(to_type), _op(op), _value(value) { | |
1118 ASSERT_VALUES | |
1119 } | |
1120 | |
1121 // accessors | |
1122 Bytecodes::Code op() const { return _op; } | |
1123 Value value() const { return _value; } | |
1124 | |
1125 // generic | |
1584 | 1126 virtual void input_values_do(ValueVisitor* f) { f->visit(&_value); } |
0 | 1127 HASHING2(Convert, true, op(), value()->subst()) |
1128 }; | |
1129 | |
1130 | |
1131 LEAF(NullCheck, Instruction) | |
1132 private: | |
1133 Value _obj; | |
1134 | |
1135 public: | |
1136 // creation | |
1819 | 1137 NullCheck(Value obj, ValueStack* state_before) |
1138 : Instruction(obj->type()->base(), state_before) | |
1139 , _obj(obj) | |
1140 { | |
0 | 1141 ASSERT_VALUES |
1142 set_can_trap(true); | |
1143 assert(_obj->type()->is_object(), "null check must be applied to objects only"); | |
1144 pin(Instruction::PinExplicitNullCheck); | |
1145 } | |
1146 | |
1147 // accessors | |
1148 Value obj() const { return _obj; } | |
1149 | |
1150 // setters | |
1151 void set_can_trap(bool can_trap) { set_flag(CanTrapFlag, can_trap); } | |
1152 | |
1153 // generic | |
1154 virtual bool can_trap() const { return check_flag(CanTrapFlag); /* null-check elimination sets to false */ } | |
1584 | 1155 virtual void input_values_do(ValueVisitor* f) { f->visit(&_obj); } |
0 | 1156 HASHING1(NullCheck, true, obj()->subst()) |
1157 }; | |
1158 | |
1159 | |
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1160 // This node is supposed to cast the type of another node to a more precise |
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1161 // declared type. |
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1162 LEAF(TypeCast, Instruction) |
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1163 private: |
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1164 ciType* _declared_type; |
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1165 Value _obj; |
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1166 |
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1167 public: |
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1168 // The type of this node is the same type as the object type (and it might be constant). |
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1169 TypeCast(ciType* type, Value obj, ValueStack* state_before) |
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1170 : Instruction(obj->type(), state_before, obj->type()->is_constant()), |
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1171 _declared_type(type), |
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1172 _obj(obj) {} |
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1173 |
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1174 // accessors |
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1175 ciType* declared_type() const { return _declared_type; } |
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1176 Value obj() const { return _obj; } |
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1177 |
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1178 // generic |
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1179 virtual void input_values_do(ValueVisitor* f) { f->visit(&_obj); } |
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1180 }; |
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1181 |
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1182 |
0 | 1183 BASE(StateSplit, Instruction) |
1184 private: | |
1185 ValueStack* _state; | |
1186 | |
1187 protected: | |
1188 static void substitute(BlockList& list, BlockBegin* old_block, BlockBegin* new_block); | |
1189 | |
1190 public: | |
1191 // creation | |
1819 | 1192 StateSplit(ValueType* type, ValueStack* state_before = NULL) |
1193 : Instruction(type, state_before) | |
1194 , _state(NULL) | |
1195 { | |
0 | 1196 pin(PinStateSplitConstructor); |
1197 } | |
1198 | |
1199 // accessors | |
1200 ValueStack* state() const { return _state; } | |
1201 IRScope* scope() const; // the state's scope | |
1202 | |
1203 // manipulation | |
1819 | 1204 void set_state(ValueStack* state) { assert(_state == NULL, "overwriting existing state"); check_state(state); _state = state; } |
0 | 1205 |
1206 // generic | |
1584 | 1207 virtual void input_values_do(ValueVisitor* f) { /* no values */ } |
1208 virtual void state_values_do(ValueVisitor* f); | |
0 | 1209 }; |
1210 | |
1211 | |
1212 LEAF(Invoke, StateSplit) | |
1213 private: | |
1295 | 1214 Bytecodes::Code _code; |
1215 Value _recv; | |
1216 Values* _args; | |
1217 BasicTypeList* _signature; | |
1218 int _vtable_index; | |
1219 ciMethod* _target; | |
0 | 1220 |
1221 public: | |
1222 // creation | |
1223 Invoke(Bytecodes::Code code, ValueType* result_type, Value recv, Values* args, | |
1295 | 1224 int vtable_index, ciMethod* target, ValueStack* state_before); |
0 | 1225 |
1226 // accessors | |
1227 Bytecodes::Code code() const { return _code; } | |
1228 Value receiver() const { return _recv; } | |
1229 bool has_receiver() const { return receiver() != NULL; } | |
1230 int number_of_arguments() const { return _args->length(); } | |
1231 Value argument_at(int i) const { return _args->at(i); } | |
1232 int vtable_index() const { return _vtable_index; } | |
1233 BasicTypeList* signature() const { return _signature; } | |
1234 ciMethod* target() const { return _target; } | |
1235 | |
2446 | 1236 ciType* declared_type() const; |
1237 | |
0 | 1238 // Returns false if target is not loaded |
1239 bool target_is_final() const { return check_flag(TargetIsFinalFlag); } | |
1240 bool target_is_loaded() const { return check_flag(TargetIsLoadedFlag); } | |
1241 // Returns false if target is not loaded | |
1242 bool target_is_strictfp() const { return check_flag(TargetIsStrictfpFlag); } | |
1243 | |
1295 | 1244 // JSR 292 support |
1245 bool is_invokedynamic() const { return code() == Bytecodes::_invokedynamic; } | |
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1246 bool is_method_handle_intrinsic() const { return target()->is_method_handle_intrinsic(); } |
1295 | 1247 |
1819 | 1248 virtual bool needs_exception_state() const { return false; } |
1249 | |
0 | 1250 // generic |
1251 virtual bool can_trap() const { return true; } | |
1584 | 1252 virtual void input_values_do(ValueVisitor* f) { |
0 | 1253 StateSplit::input_values_do(f); |
1584 | 1254 if (has_receiver()) f->visit(&_recv); |
1255 for (int i = 0; i < _args->length(); i++) f->visit(_args->adr_at(i)); | |
0 | 1256 } |
1584 | 1257 virtual void state_values_do(ValueVisitor *f); |
0 | 1258 }; |
1259 | |
1260 | |
1261 LEAF(NewInstance, StateSplit) | |
1262 private: | |
1263 ciInstanceKlass* _klass; | |
1264 | |
1265 public: | |
1266 // creation | |
1819 | 1267 NewInstance(ciInstanceKlass* klass, ValueStack* state_before) |
1268 : StateSplit(instanceType, state_before) | |
1269 , _klass(klass) | |
1270 {} | |
0 | 1271 |
1272 // accessors | |
1273 ciInstanceKlass* klass() const { return _klass; } | |
1274 | |
1819 | 1275 virtual bool needs_exception_state() const { return false; } |
1276 | |
0 | 1277 // generic |
1278 virtual bool can_trap() const { return true; } | |
1279 ciType* exact_type() const; | |
2446 | 1280 ciType* declared_type() const; |
0 | 1281 }; |
1282 | |
1283 | |
1284 BASE(NewArray, StateSplit) | |
1285 private: | |
1286 Value _length; | |
1287 | |
1288 public: | |
1289 // creation | |
1819 | 1290 NewArray(Value length, ValueStack* state_before) |
1291 : StateSplit(objectType, state_before) | |
1292 , _length(length) | |
1293 { | |
0 | 1294 // Do not ASSERT_VALUES since length is NULL for NewMultiArray |
1295 } | |
1296 | |
1297 // accessors | |
1298 Value length() const { return _length; } | |
1299 | |
1819 | 1300 virtual bool needs_exception_state() const { return false; } |
1301 | |
2446 | 1302 ciType* declared_type() const; |
1303 | |
0 | 1304 // generic |
1305 virtual bool can_trap() const { return true; } | |
1584 | 1306 virtual void input_values_do(ValueVisitor* f) { StateSplit::input_values_do(f); f->visit(&_length); } |
0 | 1307 }; |
1308 | |
1309 | |
1310 LEAF(NewTypeArray, NewArray) | |
1311 private: | |
1312 BasicType _elt_type; | |
1313 | |
1314 public: | |
1315 // creation | |
1819 | 1316 NewTypeArray(Value length, BasicType elt_type, ValueStack* state_before) |
1317 : NewArray(length, state_before) | |
1318 , _elt_type(elt_type) | |
1319 {} | |
0 | 1320 |
1321 // accessors | |
1322 BasicType elt_type() const { return _elt_type; } | |
1323 ciType* exact_type() const; | |
1324 }; | |
1325 | |
1326 | |
1327 LEAF(NewObjectArray, NewArray) | |
1328 private: | |
1329 ciKlass* _klass; | |
1330 | |
1331 public: | |
1332 // creation | |
1333 NewObjectArray(ciKlass* klass, Value length, ValueStack* state_before) : NewArray(length, state_before), _klass(klass) {} | |
1334 | |
1335 // accessors | |
1336 ciKlass* klass() const { return _klass; } | |
1337 ciType* exact_type() const; | |
1338 }; | |
1339 | |
1340 | |
1341 LEAF(NewMultiArray, NewArray) | |
1342 private: | |
1343 ciKlass* _klass; | |
1344 Values* _dims; | |
1345 | |
1346 public: | |
1347 // creation | |
1348 NewMultiArray(ciKlass* klass, Values* dims, ValueStack* state_before) : NewArray(NULL, state_before), _klass(klass), _dims(dims) { | |
1349 ASSERT_VALUES | |
1350 } | |
1351 | |
1352 // accessors | |
1353 ciKlass* klass() const { return _klass; } | |
1354 Values* dims() const { return _dims; } | |
1355 int rank() const { return dims()->length(); } | |
1356 | |
1357 // generic | |
1584 | 1358 virtual void input_values_do(ValueVisitor* f) { |
0 | 1359 // NOTE: we do not call NewArray::input_values_do since "length" |
1360 // is meaningless for a multi-dimensional array; passing the | |
1361 // zeroth element down to NewArray as its length is a bad idea | |
1362 // since there will be a copy in the "dims" array which doesn't | |
1363 // get updated, and the value must not be traversed twice. Was bug | |
1364 // - kbr 4/10/2001 | |
1365 StateSplit::input_values_do(f); | |
1584 | 1366 for (int i = 0; i < _dims->length(); i++) f->visit(_dims->adr_at(i)); |
0 | 1367 } |
1368 }; | |
1369 | |
1370 | |
1371 BASE(TypeCheck, StateSplit) | |
1372 private: | |
1373 ciKlass* _klass; | |
1374 Value _obj; | |
1375 | |
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1376 ciMethod* _profiled_method; |
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1377 int _profiled_bci; |
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1378 |
0 | 1379 public: |
1380 // creation | |
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1381 TypeCheck(ciKlass* klass, Value obj, ValueType* type, ValueStack* state_before) |
1819 | 1382 : StateSplit(type, state_before), _klass(klass), _obj(obj), |
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1383 _profiled_method(NULL), _profiled_bci(0) { |
0 | 1384 ASSERT_VALUES |
1385 set_direct_compare(false); | |
1386 } | |
1387 | |
1388 // accessors | |
1389 ciKlass* klass() const { return _klass; } | |
1390 Value obj() const { return _obj; } | |
1391 bool is_loaded() const { return klass() != NULL; } | |
1392 bool direct_compare() const { return check_flag(DirectCompareFlag); } | |
1393 | |
1394 // manipulation | |
1395 void set_direct_compare(bool flag) { set_flag(DirectCompareFlag, flag); } | |
1396 | |
1397 // generic | |
1398 virtual bool can_trap() const { return true; } | |
1584 | 1399 virtual void input_values_do(ValueVisitor* f) { StateSplit::input_values_do(f); f->visit(&_obj); } |
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1400 |
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1401 // Helpers for MethodData* profiling |
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1402 void set_should_profile(bool value) { set_flag(ProfileMDOFlag, value); } |
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1403 void set_profiled_method(ciMethod* method) { _profiled_method = method; } |
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1404 void set_profiled_bci(int bci) { _profiled_bci = bci; } |
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1405 bool should_profile() const { return check_flag(ProfileMDOFlag); } |
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1406 ciMethod* profiled_method() const { return _profiled_method; } |
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1407 int profiled_bci() const { return _profiled_bci; } |
0 | 1408 }; |
1409 | |
1410 | |
1411 LEAF(CheckCast, TypeCheck) | |
1412 public: | |
1413 // creation | |
1414 CheckCast(ciKlass* klass, Value obj, ValueStack* state_before) | |
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1415 : TypeCheck(klass, obj, objectType, state_before) {} |
0 | 1416 |
1417 void set_incompatible_class_change_check() { | |
1418 set_flag(ThrowIncompatibleClassChangeErrorFlag, true); | |
1419 } | |
1420 bool is_incompatible_class_change_check() const { | |
1421 return check_flag(ThrowIncompatibleClassChangeErrorFlag); | |
1422 } | |
1423 | |
1424 ciType* declared_type() const; | |
1425 ciType* exact_type() const; | |
1426 }; | |
1427 | |
1428 | |
1429 LEAF(InstanceOf, TypeCheck) | |
1430 public: | |
1431 // creation | |
1432 InstanceOf(ciKlass* klass, Value obj, ValueStack* state_before) : TypeCheck(klass, obj, intType, state_before) {} | |
1819 | 1433 |
1434 virtual bool needs_exception_state() const { return false; } | |
0 | 1435 }; |
1436 | |
1437 | |
1438 BASE(AccessMonitor, StateSplit) | |
1439 private: | |
1440 Value _obj; | |
1441 int _monitor_no; | |
1442 | |
1443 public: | |
1444 // creation | |
1819 | 1445 AccessMonitor(Value obj, int monitor_no, ValueStack* state_before = NULL) |
1446 : StateSplit(illegalType, state_before) | |
0 | 1447 , _obj(obj) |
1448 , _monitor_no(monitor_no) | |
1449 { | |
1450 set_needs_null_check(true); | |
1451 ASSERT_VALUES | |
1452 } | |
1453 | |
1454 // accessors | |
1455 Value obj() const { return _obj; } | |
1456 int monitor_no() const { return _monitor_no; } | |
1457 | |
1458 // generic | |
1584 | 1459 virtual void input_values_do(ValueVisitor* f) { StateSplit::input_values_do(f); f->visit(&_obj); } |
0 | 1460 }; |
1461 | |
1462 | |
1463 LEAF(MonitorEnter, AccessMonitor) | |
1464 public: | |
1465 // creation | |
1819 | 1466 MonitorEnter(Value obj, int monitor_no, ValueStack* state_before) |
1467 : AccessMonitor(obj, monitor_no, state_before) | |
0 | 1468 { |
1469 ASSERT_VALUES | |
1470 } | |
1471 | |
1472 // generic | |
1473 virtual bool can_trap() const { return true; } | |
1474 }; | |
1475 | |
1476 | |
1477 LEAF(MonitorExit, AccessMonitor) | |
1478 public: | |
1479 // creation | |
1819 | 1480 MonitorExit(Value obj, int monitor_no) |
1481 : AccessMonitor(obj, monitor_no, NULL) | |
1482 { | |
1483 ASSERT_VALUES | |
1484 } | |
0 | 1485 }; |
1486 | |
1487 | |
1488 LEAF(Intrinsic, StateSplit) | |
1489 private: | |
1490 vmIntrinsics::ID _id; | |
1491 Values* _args; | |
1492 Value _recv; | |
2446 | 1493 int _nonnull_state; // mask identifying which args are nonnull |
0 | 1494 |
1495 public: | |
1496 // preserves_state can be set to true for Intrinsics | |
1497 // which are guaranteed to preserve register state across any slow | |
1498 // cases; setting it to true does not mean that the Intrinsic can | |
1499 // not trap, only that if we continue execution in the same basic | |
1500 // block after the Intrinsic, all of the registers are intact. This | |
1501 // allows load elimination and common expression elimination to be | |
1502 // performed across the Intrinsic. The default value is false. | |
1503 Intrinsic(ValueType* type, | |
1504 vmIntrinsics::ID id, | |
1505 Values* args, | |
1506 bool has_receiver, | |
1819 | 1507 ValueStack* state_before, |
0 | 1508 bool preserves_state, |
1509 bool cantrap = true) | |
1819 | 1510 : StateSplit(type, state_before) |
0 | 1511 , _id(id) |
1512 , _args(args) | |
1513 , _recv(NULL) | |
2446 | 1514 , _nonnull_state(AllBits) |
0 | 1515 { |
1516 assert(args != NULL, "args must exist"); | |
1517 ASSERT_VALUES | |
1518 set_flag(PreservesStateFlag, preserves_state); | |
1519 set_flag(CanTrapFlag, cantrap); | |
1520 if (has_receiver) { | |
1521 _recv = argument_at(0); | |
1522 } | |
1523 set_needs_null_check(has_receiver); | |
1524 | |
1525 // some intrinsics can't trap, so don't force them to be pinned | |
1526 if (!can_trap()) { | |
1527 unpin(PinStateSplitConstructor); | |
1528 } | |
1529 } | |
1530 | |
1531 // accessors | |
1532 vmIntrinsics::ID id() const { return _id; } | |
1533 int number_of_arguments() const { return _args->length(); } | |
1534 Value argument_at(int i) const { return _args->at(i); } | |
1535 | |
1536 bool has_receiver() const { return (_recv != NULL); } | |
1537 Value receiver() const { assert(has_receiver(), "must have receiver"); return _recv; } | |
1538 bool preserves_state() const { return check_flag(PreservesStateFlag); } | |
1539 | |
2446 | 1540 bool arg_needs_null_check(int i) { |
1541 if (i >= 0 && i < (int)sizeof(_nonnull_state) * BitsPerByte) { | |
1542 return is_set_nth_bit(_nonnull_state, i); | |
1543 } | |
1544 return true; | |
1545 } | |
1546 | |
1547 void set_arg_needs_null_check(int i, bool check) { | |
1548 if (i >= 0 && i < (int)sizeof(_nonnull_state) * BitsPerByte) { | |
1549 if (check) { | |
1550 _nonnull_state |= nth_bit(i); | |
1551 } else { | |
1552 _nonnull_state &= ~(nth_bit(i)); | |
1553 } | |
1554 } | |
1555 } | |
1556 | |
0 | 1557 // generic |
1558 virtual bool can_trap() const { return check_flag(CanTrapFlag); } | |
1584 | 1559 virtual void input_values_do(ValueVisitor* f) { |
0 | 1560 StateSplit::input_values_do(f); |
1584 | 1561 for (int i = 0; i < _args->length(); i++) f->visit(_args->adr_at(i)); |
0 | 1562 } |
1563 }; | |
1564 | |
1565 | |
1566 class LIR_List; | |
1567 | |
1568 LEAF(BlockBegin, StateSplit) | |
1569 private: | |
1570 int _block_id; // the unique block id | |
1819 | 1571 int _bci; // start-bci of block |
0 | 1572 int _depth_first_number; // number of this block in a depth-first ordering |
1573 int _linear_scan_number; // number of this block in linear-scan ordering | |
8860 | 1574 int _dominator_depth; |
0 | 1575 int _loop_depth; // the loop nesting level of this block |
1576 int _loop_index; // number of the innermost loop of this block | |
1577 int _flags; // the flags associated with this block | |
1578 | |
1579 // fields used by BlockListBuilder | |
1580 int _total_preds; // number of predecessors found by BlockListBuilder | |
1581 BitMap _stores_to_locals; // bit is set when a local variable is stored in the block | |
1582 | |
1583 // SSA specific fields: (factor out later) | |
1584 BlockList _successors; // the successors of this block | |
1585 BlockList _predecessors; // the predecessors of this block | |
8860 | 1586 BlockList _dominates; // list of blocks that are dominated by this block |
0 | 1587 BlockBegin* _dominator; // the dominator of this block |
1588 // SSA specific ends | |
1589 BlockEnd* _end; // the last instruction of this block | |
1590 BlockList _exception_handlers; // the exception handlers potentially invoked by this block | |
1591 ValueStackStack* _exception_states; // only for xhandler entries: states of all instructions that have an edge to this xhandler | |
1592 int _exception_handler_pco; // if this block is the start of an exception handler, | |
1593 // this records the PC offset in the assembly code of the | |
1594 // first instruction in this block | |
1595 Label _label; // the label associated with this block | |
1596 LIR_List* _lir; // the low level intermediate representation for this block | |
1597 | |
1598 BitMap _live_in; // set of live LIR_Opr registers at entry to this block | |
1599 BitMap _live_out; // set of live LIR_Opr registers at exit from this block | |
1600 BitMap _live_gen; // set of registers used before any redefinition in this block | |
1601 BitMap _live_kill; // set of registers defined in this block | |
1602 | |
1603 BitMap _fpu_register_usage; | |
1604 intArray* _fpu_stack_state; // For x86 FPU code generation with UseLinearScan | |
1605 int _first_lir_instruction_id; // ID of first LIR instruction in this block | |
1606 int _last_lir_instruction_id; // ID of last LIR instruction in this block | |
1607 | |
1608 void iterate_preorder (boolArray& mark, BlockClosure* closure); | |
1609 void iterate_postorder(boolArray& mark, BlockClosure* closure); | |
1610 | |
1611 friend class SuxAndWeightAdjuster; | |
1612 | |
1613 public: | |
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1614 void* operator new(size_t size) throw() { |
1584 | 1615 Compilation* c = Compilation::current(); |
1616 void* res = c->arena()->Amalloc(size); | |
1617 ((BlockBegin*)res)->_id = c->get_next_id(); | |
1618 ((BlockBegin*)res)->_block_id = c->get_next_block_id(); | |
1619 return res; | |
1620 } | |
1621 | |
0 | 1622 // initialization/counting |
1584 | 1623 static int number_of_blocks() { |
1624 return Compilation::current()->number_of_blocks(); | |
1625 } | |
0 | 1626 |
1627 // creation | |
1628 BlockBegin(int bci) | |
1629 : StateSplit(illegalType) | |
1819 | 1630 , _bci(bci) |
0 | 1631 , _depth_first_number(-1) |
1632 , _linear_scan_number(-1) | |
1633 , _loop_depth(0) | |
1634 , _flags(0) | |
8860 | 1635 , _dominator_depth(-1) |
0 | 1636 , _dominator(NULL) |
1637 , _end(NULL) | |
1638 , _predecessors(2) | |
1639 , _successors(2) | |
8860 | 1640 , _dominates(2) |
0 | 1641 , _exception_handlers(1) |
1642 , _exception_states(NULL) | |
1643 , _exception_handler_pco(-1) | |
1644 , _lir(NULL) | |
1645 , _loop_index(-1) | |
1646 , _live_in() | |
1647 , _live_out() | |
1648 , _live_gen() | |
1649 , _live_kill() | |
1650 , _fpu_register_usage() | |
1651 , _fpu_stack_state(NULL) | |
1652 , _first_lir_instruction_id(-1) | |
1653 , _last_lir_instruction_id(-1) | |
1654 , _total_preds(0) | |
1655 , _stores_to_locals() | |
1656 { | |
8860 | 1657 _block = this; |
1819 | 1658 #ifndef PRODUCT |
1659 set_printable_bci(bci); | |
1660 #endif | |
0 | 1661 } |
1662 | |
1663 // accessors | |
1664 int block_id() const { return _block_id; } | |
1819 | 1665 int bci() const { return _bci; } |
0 | 1666 BlockList* successors() { return &_successors; } |
8860 | 1667 BlockList* dominates() { return &_dominates; } |
0 | 1668 BlockBegin* dominator() const { return _dominator; } |
1669 int loop_depth() const { return _loop_depth; } | |
8860 | 1670 int dominator_depth() const { return _dominator_depth; } |
0 | 1671 int depth_first_number() const { return _depth_first_number; } |
1672 int linear_scan_number() const { return _linear_scan_number; } | |
1673 BlockEnd* end() const { return _end; } | |
1674 Label* label() { return &_label; } | |
1675 LIR_List* lir() const { return _lir; } | |
1676 int exception_handler_pco() const { return _exception_handler_pco; } | |
1677 BitMap& live_in() { return _live_in; } | |
1678 BitMap& live_out() { return _live_out; } | |
1679 BitMap& live_gen() { return _live_gen; } | |
1680 BitMap& live_kill() { return _live_kill; } | |
1681 BitMap& fpu_register_usage() { return _fpu_register_usage; } | |
1682 intArray* fpu_stack_state() const { return _fpu_stack_state; } | |
1683 int first_lir_instruction_id() const { return _first_lir_instruction_id; } | |
1684 int last_lir_instruction_id() const { return _last_lir_instruction_id; } | |
1685 int total_preds() const { return _total_preds; } | |
1686 BitMap& stores_to_locals() { return _stores_to_locals; } | |
1687 | |
1688 // manipulation | |
1689 void set_dominator(BlockBegin* dom) { _dominator = dom; } | |
1690 void set_loop_depth(int d) { _loop_depth = d; } | |
8860 | 1691 void set_dominator_depth(int d) { _dominator_depth = d; } |
0 | 1692 void set_depth_first_number(int dfn) { _depth_first_number = dfn; } |
1693 void set_linear_scan_number(int lsn) { _linear_scan_number = lsn; } | |
1694 void set_end(BlockEnd* end); | |
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1695 void clear_end(); |
0 | 1696 void disconnect_from_graph(); |
1697 static void disconnect_edge(BlockBegin* from, BlockBegin* to); | |
1698 BlockBegin* insert_block_between(BlockBegin* sux); | |
1699 void substitute_sux(BlockBegin* old_sux, BlockBegin* new_sux); | |
1700 void set_lir(LIR_List* lir) { _lir = lir; } | |
1701 void set_exception_handler_pco(int pco) { _exception_handler_pco = pco; } | |
1702 void set_live_in (BitMap map) { _live_in = map; } | |
1703 void set_live_out (BitMap map) { _live_out = map; } | |
1704 void set_live_gen (BitMap map) { _live_gen = map; } | |
1705 void set_live_kill (BitMap map) { _live_kill = map; } | |
1706 void set_fpu_register_usage(BitMap map) { _fpu_register_usage = map; } | |
1707 void set_fpu_stack_state(intArray* state) { _fpu_stack_state = state; } | |
1708 void set_first_lir_instruction_id(int id) { _first_lir_instruction_id = id; } | |
1709 void set_last_lir_instruction_id(int id) { _last_lir_instruction_id = id; } | |
1710 void increment_total_preds(int n = 1) { _total_preds += n; } | |
1711 void init_stores_to_locals(int locals_count) { _stores_to_locals = BitMap(locals_count); _stores_to_locals.clear(); } | |
1712 | |
1713 // generic | |
1584 | 1714 virtual void state_values_do(ValueVisitor* f); |
0 | 1715 |
1716 // successors and predecessors | |
1717 int number_of_sux() const; | |
1718 BlockBegin* sux_at(int i) const; | |
1719 void add_successor(BlockBegin* sux); | |
1720 void remove_successor(BlockBegin* pred); | |
1721 bool is_successor(BlockBegin* sux) const { return _successors.contains(sux); } | |
1722 | |
1723 void add_predecessor(BlockBegin* pred); | |
1724 void remove_predecessor(BlockBegin* pred); | |
1725 bool is_predecessor(BlockBegin* pred) const { return _predecessors.contains(pred); } | |
1726 int number_of_preds() const { return _predecessors.length(); } | |
1727 BlockBegin* pred_at(int i) const { return _predecessors[i]; } | |
1728 | |
1729 // exception handlers potentially invoked by this block | |
1730 void add_exception_handler(BlockBegin* b); | |
1731 bool is_exception_handler(BlockBegin* b) const { return _exception_handlers.contains(b); } | |
1732 int number_of_exception_handlers() const { return _exception_handlers.length(); } | |
1733 BlockBegin* exception_handler_at(int i) const { return _exception_handlers.at(i); } | |
1734 | |
1735 // states of the instructions that have an edge to this exception handler | |
1736 int number_of_exception_states() { assert(is_set(exception_entry_flag), "only for xhandlers"); return _exception_states == NULL ? 0 : _exception_states->length(); } | |
1737 ValueStack* exception_state_at(int idx) const { assert(is_set(exception_entry_flag), "only for xhandlers"); return _exception_states->at(idx); } | |
1738 int add_exception_state(ValueStack* state); | |
1739 | |
1740 // flags | |
1741 enum Flag { | |
1742 no_flag = 0, | |
1743 std_entry_flag = 1 << 0, | |
1744 osr_entry_flag = 1 << 1, | |
1745 exception_entry_flag = 1 << 2, | |
1746 subroutine_entry_flag = 1 << 3, | |
1747 backward_branch_target_flag = 1 << 4, | |
1748 is_on_work_list_flag = 1 << 5, | |
1749 was_visited_flag = 1 << 6, | |
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1750 parser_loop_header_flag = 1 << 7, // set by parser to identify blocks where phi functions can not be created on demand |
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1751 critical_edge_split_flag = 1 << 8, // set for all blocks that are introduced when critical edges are split |
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1752 linear_scan_loop_header_flag = 1 << 9, // set during loop-detection for LinearScan |
8860 | 1753 linear_scan_loop_end_flag = 1 << 10, // set during loop-detection for LinearScan |
1754 donot_eliminate_range_checks = 1 << 11 // Should be try to eliminate range checks in this block | |
0 | 1755 }; |
1756 | |
1757 void set(Flag f) { _flags |= f; } | |
1758 void clear(Flag f) { _flags &= ~f; } | |
1759 bool is_set(Flag f) const { return (_flags & f) != 0; } | |
1760 bool is_entry_block() const { | |
1761 const int entry_mask = std_entry_flag | osr_entry_flag | exception_entry_flag; | |
1762 return (_flags & entry_mask) != 0; | |
1763 } | |
1764 | |
1765 // iteration | |
1766 void iterate_preorder (BlockClosure* closure); | |
1767 void iterate_postorder (BlockClosure* closure); | |
1768 | |
1584 | 1769 void block_values_do(ValueVisitor* f); |
0 | 1770 |
1771 // loops | |
1772 void set_loop_index(int ix) { _loop_index = ix; } | |
1773 int loop_index() const { return _loop_index; } | |
1774 | |
1775 // merging | |
1776 bool try_merge(ValueStack* state); // try to merge states at block begin | |
1777 void merge(ValueStack* state) { bool b = try_merge(state); assert(b, "merge failed"); } | |
1778 | |
1779 // debugging | |
1780 void print_block() PRODUCT_RETURN; | |
1781 void print_block(InstructionPrinter& ip, bool live_only = false) PRODUCT_RETURN; | |
1782 }; | |
1783 | |
1784 | |
1785 BASE(BlockEnd, StateSplit) | |
1786 private: | |
1787 BlockList* _sux; | |
1788 | |
1789 protected: | |
1790 BlockList* sux() const { return _sux; } | |
1791 | |
1792 void set_sux(BlockList* sux) { | |
1793 #ifdef ASSERT | |
1794 assert(sux != NULL, "sux must exist"); | |
1795 for (int i = sux->length() - 1; i >= 0; i--) assert(sux->at(i) != NULL, "sux must exist"); | |
1796 #endif | |
1797 _sux = sux; | |
1798 } | |
1799 | |
1800 public: | |
1801 // creation | |
1802 BlockEnd(ValueType* type, ValueStack* state_before, bool is_safepoint) | |
1819 | 1803 : StateSplit(type, state_before) |
0 | 1804 , _sux(NULL) |
1819 | 1805 { |
0 | 1806 set_flag(IsSafepointFlag, is_safepoint); |
1807 } | |
1808 | |
1809 // accessors | |
1810 bool is_safepoint() const { return check_flag(IsSafepointFlag); } | |
8860 | 1811 // For compatibility with old code, for new code use block() |
1812 BlockBegin* begin() const { return _block; } | |
0 | 1813 |
1814 // manipulation | |
1815 void set_begin(BlockBegin* begin); | |
1816 | |
1817 // successors | |
1818 int number_of_sux() const { return _sux != NULL ? _sux->length() : 0; } | |
1819 BlockBegin* sux_at(int i) const { return _sux->at(i); } | |
1820 BlockBegin* default_sux() const { return sux_at(number_of_sux() - 1); } | |
1821 BlockBegin** addr_sux_at(int i) const { return _sux->adr_at(i); } | |
1822 int sux_index(BlockBegin* sux) const { return _sux->find(sux); } | |
1823 void substitute_sux(BlockBegin* old_sux, BlockBegin* new_sux); | |
1824 }; | |
1825 | |
1826 | |
1827 LEAF(Goto, BlockEnd) | |
1828 public: | |
1783 | 1829 enum Direction { |
1830 none, // Just a regular goto | |
1831 taken, not_taken // Goto produced from If | |
1832 }; | |
1833 private: | |
1834 ciMethod* _profiled_method; | |
1835 int _profiled_bci; | |
1836 Direction _direction; | |
1837 public: | |
0 | 1838 // creation |
1783 | 1839 Goto(BlockBegin* sux, ValueStack* state_before, bool is_safepoint = false) |
1840 : BlockEnd(illegalType, state_before, is_safepoint) | |
1841 , _direction(none) | |
1842 , _profiled_method(NULL) | |
1843 , _profiled_bci(0) { | |
0 | 1844 BlockList* s = new BlockList(1); |
1845 s->append(sux); | |
1846 set_sux(s); | |
1847 } | |
1848 | |
1783 | 1849 Goto(BlockBegin* sux, bool is_safepoint) : BlockEnd(illegalType, NULL, is_safepoint) |
1850 , _direction(none) | |
1851 , _profiled_method(NULL) | |
1852 , _profiled_bci(0) { | |
0 | 1853 BlockList* s = new BlockList(1); |
1854 s->append(sux); | |
1855 set_sux(s); | |
1856 } | |
1857 | |
1783 | 1858 bool should_profile() const { return check_flag(ProfileMDOFlag); } |
1859 ciMethod* profiled_method() const { return _profiled_method; } // set only for profiled branches | |
1860 int profiled_bci() const { return _profiled_bci; } | |
1861 Direction direction() const { return _direction; } | |
1862 | |
1863 void set_should_profile(bool value) { set_flag(ProfileMDOFlag, value); } | |
1864 void set_profiled_method(ciMethod* method) { _profiled_method = method; } | |
1865 void set_profiled_bci(int bci) { _profiled_bci = bci; } | |
1866 void set_direction(Direction d) { _direction = d; } | |
0 | 1867 }; |
1868 | |
8860 | 1869 #ifdef ASSERT |
1870 LEAF(Assert, Instruction) | |
1871 private: | |
1872 Value _x; | |
1873 Condition _cond; | |
1874 Value _y; | |
1875 char *_message; | |
1876 | |
1877 public: | |
1878 // creation | |
1879 // unordered_is_true is valid for float/double compares only | |
1880 Assert(Value x, Condition cond, bool unordered_is_true, Value y); | |
1881 | |
1882 // accessors | |
1883 Value x() const { return _x; } | |
1884 Condition cond() const { return _cond; } | |
1885 bool unordered_is_true() const { return check_flag(UnorderedIsTrueFlag); } | |
1886 Value y() const { return _y; } | |
1887 const char *message() const { return _message; } | |
1888 | |
1889 // generic | |
1890 virtual void input_values_do(ValueVisitor* f) { f->visit(&_x); f->visit(&_y); } | |
1891 }; | |
1892 #endif | |
1893 | |
1894 LEAF(RangeCheckPredicate, StateSplit) | |
1895 private: | |
1896 Value _x; | |
1897 Condition _cond; | |
1898 Value _y; | |
1899 | |
1900 void check_state(); | |
1901 | |
1902 public: | |
1903 // creation | |
1904 // unordered_is_true is valid for float/double compares only | |
1905 RangeCheckPredicate(Value x, Condition cond, bool unordered_is_true, Value y, ValueStack* state) : StateSplit(illegalType) | |
1906 , _x(x) | |
1907 , _cond(cond) | |
1908 , _y(y) | |
1909 { | |
1910 ASSERT_VALUES | |
1911 set_flag(UnorderedIsTrueFlag, unordered_is_true); | |
1912 assert(x->type()->tag() == y->type()->tag(), "types must match"); | |
1913 this->set_state(state); | |
1914 check_state(); | |
1915 } | |
1916 | |
1917 // Always deoptimize | |
1918 RangeCheckPredicate(ValueStack* state) : StateSplit(illegalType) | |
1919 { | |
1920 this->set_state(state); | |
1921 _x = _y = NULL; | |
1922 check_state(); | |
1923 } | |
1924 | |
1925 // accessors | |
1926 Value x() const { return _x; } | |
1927 Condition cond() const { return _cond; } | |
1928 bool unordered_is_true() const { return check_flag(UnorderedIsTrueFlag); } | |
1929 Value y() const { return _y; } | |
1930 | |
1931 void always_fail() { _x = _y = NULL; } | |
1932 | |
1933 // generic | |
1934 virtual void input_values_do(ValueVisitor* f) { StateSplit::input_values_do(f); f->visit(&_x); f->visit(&_y); } | |
1935 HASHING3(RangeCheckPredicate, true, x()->subst(), y()->subst(), cond()) | |
1936 }; | |
0 | 1937 |
1938 LEAF(If, BlockEnd) | |
1939 private: | |
1940 Value _x; | |
1941 Condition _cond; | |
1942 Value _y; | |
1943 ciMethod* _profiled_method; | |
1944 int _profiled_bci; // Canonicalizer may alter bci of If node | |
1783 | 1945 bool _swapped; // Is the order reversed with respect to the original If in the |
1946 // bytecode stream? | |
0 | 1947 public: |
1948 // creation | |
1949 // unordered_is_true is valid for float/double compares only | |
1950 If(Value x, Condition cond, bool unordered_is_true, Value y, BlockBegin* tsux, BlockBegin* fsux, ValueStack* state_before, bool is_safepoint) | |
1951 : BlockEnd(illegalType, state_before, is_safepoint) | |
1952 , _x(x) | |
1953 , _cond(cond) | |
1954 , _y(y) | |
1955 , _profiled_method(NULL) | |
1956 , _profiled_bci(0) | |
1783 | 1957 , _swapped(false) |
0 | 1958 { |
1959 ASSERT_VALUES | |
1960 set_flag(UnorderedIsTrueFlag, unordered_is_true); | |
1961 assert(x->type()->tag() == y->type()->tag(), "types must match"); | |
1962 BlockList* s = new BlockList(2); | |
1963 s->append(tsux); | |
1964 s->append(fsux); | |
1965 set_sux(s); | |
1966 } | |
1967 | |
1968 // accessors | |
1969 Value x() const { return _x; } | |
1970 Condition cond() const { return _cond; } | |
1971 bool unordered_is_true() const { return check_flag(UnorderedIsTrueFlag); } | |
1972 Value y() const { return _y; } | |
1973 BlockBegin* sux_for(bool is_true) const { return sux_at(is_true ? 0 : 1); } | |
1974 BlockBegin* tsux() const { return sux_for(true); } | |
1975 BlockBegin* fsux() const { return sux_for(false); } | |
1976 BlockBegin* usux() const { return sux_for(unordered_is_true()); } | |
1977 bool should_profile() const { return check_flag(ProfileMDOFlag); } | |
1978 ciMethod* profiled_method() const { return _profiled_method; } // set only for profiled branches | |
1783 | 1979 int profiled_bci() const { return _profiled_bci; } // set for profiled branches and tiered |
1980 bool is_swapped() const { return _swapped; } | |
0 | 1981 |
1982 // manipulation | |
1983 void swap_operands() { | |
1984 Value t = _x; _x = _y; _y = t; | |
1985 _cond = mirror(_cond); | |
1986 } | |
1987 | |
1988 void swap_sux() { | |
1989 assert(number_of_sux() == 2, "wrong number of successors"); | |
1990 BlockList* s = sux(); | |
1991 BlockBegin* t = s->at(0); s->at_put(0, s->at(1)); s->at_put(1, t); | |
1992 _cond = negate(_cond); | |
1993 set_flag(UnorderedIsTrueFlag, !check_flag(UnorderedIsTrueFlag)); | |
1994 } | |
1995 | |
1996 void set_should_profile(bool value) { set_flag(ProfileMDOFlag, value); } | |
1997 void set_profiled_method(ciMethod* method) { _profiled_method = method; } | |
1998 void set_profiled_bci(int bci) { _profiled_bci = bci; } | |
1783 | 1999 void set_swapped(bool value) { _swapped = value; } |
0 | 2000 // generic |
1584 | 2001 virtual void input_values_do(ValueVisitor* f) { BlockEnd::input_values_do(f); f->visit(&_x); f->visit(&_y); } |
0 | 2002 }; |
2003 | |
2004 | |
2005 LEAF(IfInstanceOf, BlockEnd) | |
2006 private: | |
2007 ciKlass* _klass; | |
2008 Value _obj; | |
2009 bool _test_is_instance; // jump if instance | |
2010 int _instanceof_bci; | |
2011 | |
2012 public: | |
2013 IfInstanceOf(ciKlass* klass, Value obj, bool test_is_instance, int instanceof_bci, BlockBegin* tsux, BlockBegin* fsux) | |
2014 : BlockEnd(illegalType, NULL, false) // temporary set to false | |
2015 , _klass(klass) | |
2016 , _obj(obj) | |
2017 , _test_is_instance(test_is_instance) | |
2018 , _instanceof_bci(instanceof_bci) | |
2019 { | |
2020 ASSERT_VALUES | |
2021 assert(instanceof_bci >= 0, "illegal bci"); | |
2022 BlockList* s = new BlockList(2); | |
2023 s->append(tsux); | |
2024 s->append(fsux); | |
2025 set_sux(s); | |
2026 } | |
2027 | |
2028 // accessors | |
2029 // | |
2030 // Note 1: If test_is_instance() is true, IfInstanceOf tests if obj *is* an | |
2031 // instance of klass; otherwise it tests if it is *not* and instance | |
2032 // of klass. | |
2033 // | |
2034 // Note 2: IfInstanceOf instructions are created by combining an InstanceOf | |
2035 // and an If instruction. The IfInstanceOf bci() corresponds to the | |
2036 // bci that the If would have had; the (this->) instanceof_bci() is | |
2037 // the bci of the original InstanceOf instruction. | |
2038 ciKlass* klass() const { return _klass; } | |
2039 Value obj() const { return _obj; } | |
2040 int instanceof_bci() const { return _instanceof_bci; } | |
2041 bool test_is_instance() const { return _test_is_instance; } | |
2042 BlockBegin* sux_for(bool is_true) const { return sux_at(is_true ? 0 : 1); } | |
2043 BlockBegin* tsux() const { return sux_for(true); } | |
2044 BlockBegin* fsux() const { return sux_for(false); } | |
2045 | |
2046 // manipulation | |
2047 void swap_sux() { | |
2048 assert(number_of_sux() == 2, "wrong number of successors"); | |
2049 BlockList* s = sux(); | |
2050 BlockBegin* t = s->at(0); s->at_put(0, s->at(1)); s->at_put(1, t); | |
2051 _test_is_instance = !_test_is_instance; | |
2052 } | |
2053 | |
2054 // generic | |
1584 | 2055 virtual void input_values_do(ValueVisitor* f) { BlockEnd::input_values_do(f); f->visit(&_obj); } |
0 | 2056 }; |
2057 | |
2058 | |
2059 BASE(Switch, BlockEnd) | |
2060 private: | |
2061 Value _tag; | |
2062 | |
2063 public: | |
2064 // creation | |
2065 Switch(Value tag, BlockList* sux, ValueStack* state_before, bool is_safepoint) | |
2066 : BlockEnd(illegalType, state_before, is_safepoint) | |
2067 , _tag(tag) { | |
2068 ASSERT_VALUES | |
2069 set_sux(sux); | |
2070 } | |
2071 | |
2072 // accessors | |
2073 Value tag() const { return _tag; } | |
2074 int length() const { return number_of_sux() - 1; } | |
2075 | |
1819 | 2076 virtual bool needs_exception_state() const { return false; } |
2077 | |
0 | 2078 // generic |
1584 | 2079 virtual void input_values_do(ValueVisitor* f) { BlockEnd::input_values_do(f); f->visit(&_tag); } |
0 | 2080 }; |
2081 | |
2082 | |
2083 LEAF(TableSwitch, Switch) | |
2084 private: | |
2085 int _lo_key; | |
2086 | |
2087 public: | |
2088 // creation | |
2089 TableSwitch(Value tag, BlockList* sux, int lo_key, ValueStack* state_before, bool is_safepoint) | |
2090 : Switch(tag, sux, state_before, is_safepoint) | |
2091 , _lo_key(lo_key) {} | |
2092 | |
2093 // accessors | |
2094 int lo_key() const { return _lo_key; } | |
2095 int hi_key() const { return _lo_key + length() - 1; } | |
2096 }; | |
2097 | |
2098 | |
2099 LEAF(LookupSwitch, Switch) | |
2100 private: | |
2101 intArray* _keys; | |
2102 | |
2103 public: | |
2104 // creation | |
2105 LookupSwitch(Value tag, BlockList* sux, intArray* keys, ValueStack* state_before, bool is_safepoint) | |
2106 : Switch(tag, sux, state_before, is_safepoint) | |
2107 , _keys(keys) { | |
2108 assert(keys != NULL, "keys must exist"); | |
2109 assert(keys->length() == length(), "sux & keys have incompatible lengths"); | |
2110 } | |
2111 | |
2112 // accessors | |
2113 int key_at(int i) const { return _keys->at(i); } | |
2114 }; | |
2115 | |
2116 | |
2117 LEAF(Return, BlockEnd) | |
2118 private: | |
2119 Value _result; | |
2120 | |
2121 public: | |
2122 // creation | |
2123 Return(Value result) : | |
2124 BlockEnd(result == NULL ? voidType : result->type()->base(), NULL, true), | |
2125 _result(result) {} | |
2126 | |
2127 // accessors | |
2128 Value result() const { return _result; } | |
2129 bool has_result() const { return result() != NULL; } | |
2130 | |
2131 // generic | |
1584 | 2132 virtual void input_values_do(ValueVisitor* f) { |
0 | 2133 BlockEnd::input_values_do(f); |
1584 | 2134 if (has_result()) f->visit(&_result); |
0 | 2135 } |
2136 }; | |
2137 | |
2138 | |
2139 LEAF(Throw, BlockEnd) | |
2140 private: | |
2141 Value _exception; | |
2142 | |
2143 public: | |
2144 // creation | |
2145 Throw(Value exception, ValueStack* state_before) : BlockEnd(illegalType, state_before, true), _exception(exception) { | |
2146 ASSERT_VALUES | |
2147 } | |
2148 | |
2149 // accessors | |
2150 Value exception() const { return _exception; } | |
2151 | |
2152 // generic | |
2153 virtual bool can_trap() const { return true; } | |
1584 | 2154 virtual void input_values_do(ValueVisitor* f) { BlockEnd::input_values_do(f); f->visit(&_exception); } |
0 | 2155 }; |
2156 | |
2157 | |
2158 LEAF(Base, BlockEnd) | |
2159 public: | |
2160 // creation | |
2161 Base(BlockBegin* std_entry, BlockBegin* osr_entry) : BlockEnd(illegalType, NULL, false) { | |
2162 assert(std_entry->is_set(BlockBegin::std_entry_flag), "std entry must be flagged"); | |
2163 assert(osr_entry == NULL || osr_entry->is_set(BlockBegin::osr_entry_flag), "osr entry must be flagged"); | |
2164 BlockList* s = new BlockList(2); | |
2165 if (osr_entry != NULL) s->append(osr_entry); | |
2166 s->append(std_entry); // must be default sux! | |
2167 set_sux(s); | |
2168 } | |
2169 | |
2170 // accessors | |
2171 BlockBegin* std_entry() const { return default_sux(); } | |
2172 BlockBegin* osr_entry() const { return number_of_sux() < 2 ? NULL : sux_at(0); } | |
2173 }; | |
2174 | |
2175 | |
2176 LEAF(OsrEntry, Instruction) | |
2177 public: | |
2178 // creation | |
2179 #ifdef _LP64 | |
1824 | 2180 OsrEntry() : Instruction(longType) { pin(); } |
0 | 2181 #else |
1824 | 2182 OsrEntry() : Instruction(intType) { pin(); } |
0 | 2183 #endif |
2184 | |
2185 // generic | |
1584 | 2186 virtual void input_values_do(ValueVisitor* f) { } |
0 | 2187 }; |
2188 | |
2189 | |
2190 // Models the incoming exception at a catch site | |
2191 LEAF(ExceptionObject, Instruction) | |
2192 public: | |
2193 // creation | |
1824 | 2194 ExceptionObject() : Instruction(objectType) { |
0 | 2195 pin(); |
2196 } | |
2197 | |
2198 // generic | |
1584 | 2199 virtual void input_values_do(ValueVisitor* f) { } |
0 | 2200 }; |
2201 | |
2202 | |
2203 // Models needed rounding for floating-point values on Intel. | |
2204 // Currently only used to represent rounding of double-precision | |
2205 // values stored into local variables, but could be used to model | |
2206 // intermediate rounding of single-precision values as well. | |
2207 LEAF(RoundFP, Instruction) | |
2208 private: | |
2209 Value _input; // floating-point value to be rounded | |
2210 | |
2211 public: | |
2212 RoundFP(Value input) | |
2213 : Instruction(input->type()) // Note: should not be used for constants | |
2214 , _input(input) | |
2215 { | |
2216 ASSERT_VALUES | |
2217 } | |
2218 | |
2219 // accessors | |
2220 Value input() const { return _input; } | |
2221 | |
2222 // generic | |
1584 | 2223 virtual void input_values_do(ValueVisitor* f) { f->visit(&_input); } |
0 | 2224 }; |
2225 | |
2226 | |
2227 BASE(UnsafeOp, Instruction) | |
2228 private: | |
2229 BasicType _basic_type; // ValueType can not express byte-sized integers | |
2230 | |
2231 protected: | |
2232 // creation | |
2233 UnsafeOp(BasicType basic_type, bool is_put) | |
2234 : Instruction(is_put ? voidType : as_ValueType(basic_type)) | |
2235 , _basic_type(basic_type) | |
2236 { | |
2237 //Note: Unsafe ops are not not guaranteed to throw NPE. | |
2238 // Convservatively, Unsafe operations must be pinned though we could be | |
2239 // looser about this if we wanted to.. | |
2240 pin(); | |
2241 } | |
2242 | |
2243 public: | |
2244 // accessors | |
2245 BasicType basic_type() { return _basic_type; } | |
2246 | |
2247 // generic | |
1584 | 2248 virtual void input_values_do(ValueVisitor* f) { } |
0 | 2249 }; |
2250 | |
2251 | |
2252 BASE(UnsafeRawOp, UnsafeOp) | |
2253 private: | |
2254 Value _base; // Base address (a Java long) | |
2255 Value _index; // Index if computed by optimizer; initialized to NULL | |
2256 int _log2_scale; // Scale factor: 0, 1, 2, or 3. | |
2257 // Indicates log2 of number of bytes (1, 2, 4, or 8) | |
2258 // to scale index by. | |
2259 | |
2260 protected: | |
2261 UnsafeRawOp(BasicType basic_type, Value addr, bool is_put) | |
2262 : UnsafeOp(basic_type, is_put) | |
2263 , _base(addr) | |
2264 , _index(NULL) | |
2265 , _log2_scale(0) | |
2266 { | |
2267 // Can not use ASSERT_VALUES because index may be NULL | |
2268 assert(addr != NULL && addr->type()->is_long(), "just checking"); | |
2269 } | |
2270 | |
2271 UnsafeRawOp(BasicType basic_type, Value base, Value index, int log2_scale, bool is_put) | |
2272 : UnsafeOp(basic_type, is_put) | |
2273 , _base(base) | |
2274 , _index(index) | |
2275 , _log2_scale(log2_scale) | |
2276 { | |
2277 } | |
2278 | |
2279 public: | |
2280 // accessors | |
2281 Value base() { return _base; } | |
2282 Value index() { return _index; } | |
2283 bool has_index() { return (_index != NULL); } | |
2284 int log2_scale() { return _log2_scale; } | |
2285 | |
2286 // setters | |
2287 void set_base (Value base) { _base = base; } | |
2288 void set_index(Value index) { _index = index; } | |
2289 void set_log2_scale(int log2_scale) { _log2_scale = log2_scale; } | |
2290 | |
2291 // generic | |
1584 | 2292 virtual void input_values_do(ValueVisitor* f) { UnsafeOp::input_values_do(f); |
2293 f->visit(&_base); | |
2294 if (has_index()) f->visit(&_index); } | |
0 | 2295 }; |
2296 | |
2297 | |
2298 LEAF(UnsafeGetRaw, UnsafeRawOp) | |
2299 private: | |
2002 | 2300 bool _may_be_unaligned, _is_wide; // For OSREntry |
0 | 2301 |
2302 public: | |
2002 | 2303 UnsafeGetRaw(BasicType basic_type, Value addr, bool may_be_unaligned, bool is_wide = false) |
0 | 2304 : UnsafeRawOp(basic_type, addr, false) { |
2305 _may_be_unaligned = may_be_unaligned; | |
2002 | 2306 _is_wide = is_wide; |
0 | 2307 } |
2308 | |
2002 | 2309 UnsafeGetRaw(BasicType basic_type, Value base, Value index, int log2_scale, bool may_be_unaligned, bool is_wide = false) |
0 | 2310 : UnsafeRawOp(basic_type, base, index, log2_scale, false) { |
2311 _may_be_unaligned = may_be_unaligned; | |
2002 | 2312 _is_wide = is_wide; |
0 | 2313 } |
2314 | |
2002 | 2315 bool may_be_unaligned() { return _may_be_unaligned; } |
2316 bool is_wide() { return _is_wide; } | |
0 | 2317 }; |
2318 | |
2319 | |
2320 LEAF(UnsafePutRaw, UnsafeRawOp) | |
2321 private: | |
2322 Value _value; // Value to be stored | |
2323 | |
2324 public: | |
2325 UnsafePutRaw(BasicType basic_type, Value addr, Value value) | |
2326 : UnsafeRawOp(basic_type, addr, true) | |
2327 , _value(value) | |
2328 { | |
2329 assert(value != NULL, "just checking"); | |
2330 ASSERT_VALUES | |
2331 } | |
2332 | |
2333 UnsafePutRaw(BasicType basic_type, Value base, Value index, int log2_scale, Value value) | |
2334 : UnsafeRawOp(basic_type, base, index, log2_scale, true) | |
2335 , _value(value) | |
2336 { | |
2337 assert(value != NULL, "just checking"); | |
2338 ASSERT_VALUES | |
2339 } | |
2340 | |
2341 // accessors | |
2342 Value value() { return _value; } | |
2343 | |
2344 // generic | |
1584 | 2345 virtual void input_values_do(ValueVisitor* f) { UnsafeRawOp::input_values_do(f); |
2346 f->visit(&_value); } | |
0 | 2347 }; |
2348 | |
2349 | |
2350 BASE(UnsafeObjectOp, UnsafeOp) | |
2351 private: | |
2352 Value _object; // Object to be fetched from or mutated | |
2353 Value _offset; // Offset within object | |
2354 bool _is_volatile; // true if volatile - dl/JSR166 | |
2355 public: | |
2356 UnsafeObjectOp(BasicType basic_type, Value object, Value offset, bool is_put, bool is_volatile) | |
2357 : UnsafeOp(basic_type, is_put), _object(object), _offset(offset), _is_volatile(is_volatile) | |
2358 { | |
2359 } | |
2360 | |
2361 // accessors | |
2362 Value object() { return _object; } | |
2363 Value offset() { return _offset; } | |
2364 bool is_volatile() { return _is_volatile; } | |
2365 // generic | |
1584 | 2366 virtual void input_values_do(ValueVisitor* f) { UnsafeOp::input_values_do(f); |
2367 f->visit(&_object); | |
2368 f->visit(&_offset); } | |
0 | 2369 }; |
2370 | |
2371 | |
2372 LEAF(UnsafeGetObject, UnsafeObjectOp) | |
2373 public: | |
2374 UnsafeGetObject(BasicType basic_type, Value object, Value offset, bool is_volatile) | |
2375 : UnsafeObjectOp(basic_type, object, offset, false, is_volatile) | |
2376 { | |
2377 ASSERT_VALUES | |
2378 } | |
2379 }; | |
2380 | |
2381 | |
2382 LEAF(UnsafePutObject, UnsafeObjectOp) | |
2383 private: | |
2384 Value _value; // Value to be stored | |
2385 public: | |
2386 UnsafePutObject(BasicType basic_type, Value object, Value offset, Value value, bool is_volatile) | |
2387 : UnsafeObjectOp(basic_type, object, offset, true, is_volatile) | |
2388 , _value(value) | |
2389 { | |
2390 ASSERT_VALUES | |
2391 } | |
2392 | |
2393 // accessors | |
2394 Value value() { return _value; } | |
2395 | |
2396 // generic | |
1584 | 2397 virtual void input_values_do(ValueVisitor* f) { UnsafeObjectOp::input_values_do(f); |
2398 f->visit(&_value); } | |
0 | 2399 }; |
2400 | |
6795
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2401 LEAF(UnsafeGetAndSetObject, UnsafeObjectOp) |
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2402 private: |
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2403 Value _value; // Value to be stored |
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2404 bool _is_add; |
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2405 public: |
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2406 UnsafeGetAndSetObject(BasicType basic_type, Value object, Value offset, Value value, bool is_add) |
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2407 : UnsafeObjectOp(basic_type, object, offset, false, false) |
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2408 , _value(value) |
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2409 , _is_add(is_add) |
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2410 { |
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2411 ASSERT_VALUES |
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|
2412 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2413 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2414 // accessors |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2415 bool is_add() const { return _is_add; } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2416 Value value() { return _value; } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2417 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2418 // generic |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2419 virtual void input_values_do(ValueVisitor* f) { UnsafeObjectOp::input_values_do(f); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2420 f->visit(&_value); } |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2421 }; |
0 | 2422 |
2423 BASE(UnsafePrefetch, UnsafeObjectOp) | |
2424 public: | |
2425 UnsafePrefetch(Value object, Value offset) | |
2426 : UnsafeObjectOp(T_VOID, object, offset, false, false) | |
2427 { | |
2428 } | |
2429 }; | |
2430 | |
2431 | |
2432 LEAF(UnsafePrefetchRead, UnsafePrefetch) | |
2433 public: | |
2434 UnsafePrefetchRead(Value object, Value offset) | |
2435 : UnsafePrefetch(object, offset) | |
2436 { | |
2437 ASSERT_VALUES | |
2438 } | |
2439 }; | |
2440 | |
2441 | |
2442 LEAF(UnsafePrefetchWrite, UnsafePrefetch) | |
2443 public: | |
2444 UnsafePrefetchWrite(Value object, Value offset) | |
2445 : UnsafePrefetch(object, offset) | |
2446 { | |
2447 ASSERT_VALUES | |
2448 } | |
2449 }; | |
2450 | |
2451 LEAF(ProfileCall, Instruction) | |
2452 private: | |
2453 ciMethod* _method; | |
2454 int _bci_of_invoke; | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2455 ciMethod* _callee; // the method that is called at the given bci |
0 | 2456 Value _recv; |
2457 ciKlass* _known_holder; | |
2458 | |
2459 public: | |
6266
1d7922586cf6
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twisti
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|
2460 ProfileCall(ciMethod* method, int bci, ciMethod* callee, Value recv, ciKlass* known_holder) |
0 | 2461 : Instruction(voidType) |
2462 , _method(method) | |
2463 , _bci_of_invoke(bci) | |
6266
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|
2464 , _callee(callee) |
0 | 2465 , _recv(recv) |
2466 , _known_holder(known_holder) | |
2467 { | |
2468 // The ProfileCall has side-effects and must occur precisely where located | |
2469 pin(); | |
2470 } | |
2471 | |
2472 ciMethod* method() { return _method; } | |
2473 int bci_of_invoke() { return _bci_of_invoke; } | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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|
2474 ciMethod* callee() { return _callee; } |
0 | 2475 Value recv() { return _recv; } |
2476 ciKlass* known_holder() { return _known_holder; } | |
2477 | |
1584 | 2478 virtual void input_values_do(ValueVisitor* f) { if (_recv != NULL) f->visit(&_recv); } |
0 | 2479 }; |
2480 | |
2166
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
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diff
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|
2481 |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
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diff
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|
2482 // Call some C runtime function that doesn't safepoint, |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
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diff
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|
2483 // optionally passing the current thread as the first argument. |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
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2002
diff
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|
2484 LEAF(RuntimeCall, Instruction) |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
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diff
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|
2485 private: |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
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diff
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|
2486 const char* _entry_name; |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2487 address _entry; |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2488 Values* _args; |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2489 bool _pass_thread; // Pass the JavaThread* as an implicit first argument |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
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diff
changeset
|
2490 |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2491 public: |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2492 RuntimeCall(ValueType* type, const char* entry_name, address entry, Values* args, bool pass_thread = true) |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
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parents:
2002
diff
changeset
|
2493 : Instruction(type) |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
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|
2494 , _entry(entry) |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2495 , _args(args) |
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6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2496 , _entry_name(entry_name) |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2497 , _pass_thread(pass_thread) { |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2498 ASSERT_VALUES |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
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|
2499 pin(); |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
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diff
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|
2500 } |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
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diff
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|
2501 |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2502 const char* entry_name() const { return _entry_name; } |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2503 address entry() const { return _entry; } |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2504 int number_of_arguments() const { return _args->length(); } |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2505 Value argument_at(int i) const { return _args->at(i); } |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2506 bool pass_thread() const { return _pass_thread; } |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2507 |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2508 virtual void input_values_do(ValueVisitor* f) { |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2509 for (int i = 0; i < _args->length(); i++) f->visit(_args->adr_at(i)); |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2510 } |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2511 }; |
403dc4c1d7f5
6809483: hotspot:::method_entry are not correctly generated for "method()V"
never
parents:
2002
diff
changeset
|
2512 |
1783 | 2513 // Use to trip invocation counter of an inlined method |
0 | 2514 |
1783 | 2515 LEAF(ProfileInvoke, Instruction) |
0 | 2516 private: |
1783 | 2517 ciMethod* _inlinee; |
2518 ValueStack* _state; | |
0 | 2519 |
2520 public: | |
1825 | 2521 ProfileInvoke(ciMethod* inlinee, ValueStack* state) |
0 | 2522 : Instruction(voidType) |
1783 | 2523 , _inlinee(inlinee) |
2524 , _state(state) | |
0 | 2525 { |
1783 | 2526 // The ProfileInvoke has side-effects and must occur precisely where located QQQ??? |
0 | 2527 pin(); |
2528 } | |
2529 | |
1783 | 2530 ciMethod* inlinee() { return _inlinee; } |
2531 ValueStack* state() { return _state; } | |
2532 virtual void input_values_do(ValueVisitor*) {} | |
2533 virtual void state_values_do(ValueVisitor*); | |
0 | 2534 }; |
2535 | |
4966
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4116
diff
changeset
|
2536 LEAF(MemBar, Instruction) |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4116
diff
changeset
|
2537 private: |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4116
diff
changeset
|
2538 LIR_Code _code; |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4116
diff
changeset
|
2539 |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4116
diff
changeset
|
2540 public: |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4116
diff
changeset
|
2541 MemBar(LIR_Code code) |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
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4116
diff
changeset
|
2542 : Instruction(voidType) |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
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4116
diff
changeset
|
2543 , _code(code) |
701a83c86f28
7120481: storeStore barrier in constructor with final field
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4116
diff
changeset
|
2544 { |
701a83c86f28
7120481: storeStore barrier in constructor with final field
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4116
diff
changeset
|
2545 pin(); |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4116
diff
changeset
|
2546 } |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
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4116
diff
changeset
|
2547 |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
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4116
diff
changeset
|
2548 LIR_Code code() { return _code; } |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4116
diff
changeset
|
2549 |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
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4116
diff
changeset
|
2550 virtual void input_values_do(ValueVisitor*) {} |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
parents:
4116
diff
changeset
|
2551 }; |
701a83c86f28
7120481: storeStore barrier in constructor with final field
jiangli
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4116
diff
changeset
|
2552 |
0 | 2553 class BlockPair: public CompilationResourceObj { |
2554 private: | |
2555 BlockBegin* _from; | |
2556 BlockBegin* _to; | |
2557 public: | |
2558 BlockPair(BlockBegin* from, BlockBegin* to): _from(from), _to(to) {} | |
2559 BlockBegin* from() const { return _from; } | |
2560 BlockBegin* to() const { return _to; } | |
2561 bool is_same(BlockBegin* from, BlockBegin* to) const { return _from == from && _to == to; } | |
2562 bool is_same(BlockPair* p) const { return _from == p->from() && _to == p->to(); } | |
2563 void set_to(BlockBegin* b) { _to = b; } | |
2564 void set_from(BlockBegin* b) { _from = b; } | |
2565 }; | |
2566 | |
2567 | |
2568 define_array(BlockPairArray, BlockPair*) | |
2569 define_stack(BlockPairList, BlockPairArray) | |
2570 | |
2571 | |
2572 inline int BlockBegin::number_of_sux() const { assert(_end == NULL || _end->number_of_sux() == _successors.length(), "mismatch"); return _successors.length(); } | |
2573 inline BlockBegin* BlockBegin::sux_at(int i) const { assert(_end == NULL || _end->sux_at(i) == _successors.at(i), "mismatch"); return _successors.at(i); } | |
2574 inline void BlockBegin::add_successor(BlockBegin* sux) { assert(_end == NULL, "Would create mismatch with successors of BlockEnd"); _successors.append(sux); } | |
2575 | |
2576 #undef ASSERT_VALUES | |
1972 | 2577 |
2578 #endif // SHARE_VM_C1_C1_INSTRUCTION_HPP |