Mercurial > hg > truffle
annotate src/share/vm/c1/c1_Instruction.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 1d7922586cf6 |
| children | 7eca5de9e0b6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_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; | |
| 105 class UnsafePrefetch; | |
| 106 class UnsafePrefetchRead; | |
| 107 class UnsafePrefetchWrite; | |
| 108 class ProfileCall; | |
| 1783 | 109 class ProfileInvoke; |
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110 class RuntimeCall; |
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111 class MemBar; |
| 0 | 112 |
| 113 // A Value is a reference to the instruction creating the value | |
| 114 typedef Instruction* Value; | |
| 115 define_array(ValueArray, Value) | |
| 116 define_stack(Values, ValueArray) | |
| 117 | |
| 118 define_array(ValueStackArray, ValueStack*) | |
| 119 define_stack(ValueStackStack, ValueStackArray) | |
| 120 | |
| 121 // BlockClosure is the base class for block traversal/iteration. | |
| 122 | |
| 123 class BlockClosure: public CompilationResourceObj { | |
| 124 public: | |
| 125 virtual void block_do(BlockBegin* block) = 0; | |
| 126 }; | |
| 127 | |
| 128 | |
| 1584 | 129 // A simple closure class for visiting the values of an Instruction |
| 130 class ValueVisitor: public StackObj { | |
| 131 public: | |
| 132 virtual void visit(Value* v) = 0; | |
| 133 }; | |
| 134 | |
| 135 | |
| 0 | 136 // Some array and list classes |
| 137 define_array(BlockBeginArray, BlockBegin*) | |
| 138 define_stack(_BlockList, BlockBeginArray) | |
| 139 | |
| 140 class BlockList: public _BlockList { | |
| 141 public: | |
| 142 BlockList(): _BlockList() {} | |
| 143 BlockList(const int size): _BlockList(size) {} | |
| 144 BlockList(const int size, BlockBegin* init): _BlockList(size, init) {} | |
| 145 | |
| 146 void iterate_forward(BlockClosure* closure); | |
| 147 void iterate_backward(BlockClosure* closure); | |
| 148 void blocks_do(void f(BlockBegin*)); | |
| 1584 | 149 void values_do(ValueVisitor* f); |
| 0 | 150 void print(bool cfg_only = false, bool live_only = false) PRODUCT_RETURN; |
| 151 }; | |
| 152 | |
| 153 | |
| 154 // InstructionVisitors provide type-based dispatch for instructions. | |
| 155 // For each concrete Instruction class X, a virtual function do_X is | |
| 156 // provided. Functionality that needs to be implemented for all classes | |
| 157 // (e.g., printing, code generation) is factored out into a specialised | |
| 158 // visitor instead of added to the Instruction classes itself. | |
| 159 | |
| 160 class InstructionVisitor: public StackObj { | |
| 161 public: | |
| 162 virtual void do_Phi (Phi* x) = 0; | |
| 163 virtual void do_Local (Local* x) = 0; | |
| 164 virtual void do_Constant (Constant* x) = 0; | |
| 165 virtual void do_LoadField (LoadField* x) = 0; | |
| 166 virtual void do_StoreField (StoreField* x) = 0; | |
| 167 virtual void do_ArrayLength (ArrayLength* x) = 0; | |
| 168 virtual void do_LoadIndexed (LoadIndexed* x) = 0; | |
| 169 virtual void do_StoreIndexed (StoreIndexed* x) = 0; | |
| 170 virtual void do_NegateOp (NegateOp* x) = 0; | |
| 171 virtual void do_ArithmeticOp (ArithmeticOp* x) = 0; | |
| 172 virtual void do_ShiftOp (ShiftOp* x) = 0; | |
| 173 virtual void do_LogicOp (LogicOp* x) = 0; | |
| 174 virtual void do_CompareOp (CompareOp* x) = 0; | |
| 175 virtual void do_IfOp (IfOp* x) = 0; | |
| 176 virtual void do_Convert (Convert* x) = 0; | |
| 177 virtual void do_NullCheck (NullCheck* x) = 0; | |
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178 virtual void do_TypeCast (TypeCast* x) = 0; |
| 0 | 179 virtual void do_Invoke (Invoke* x) = 0; |
| 180 virtual void do_NewInstance (NewInstance* x) = 0; | |
| 181 virtual void do_NewTypeArray (NewTypeArray* x) = 0; | |
| 182 virtual void do_NewObjectArray (NewObjectArray* x) = 0; | |
| 183 virtual void do_NewMultiArray (NewMultiArray* x) = 0; | |
| 184 virtual void do_CheckCast (CheckCast* x) = 0; | |
| 185 virtual void do_InstanceOf (InstanceOf* x) = 0; | |
| 186 virtual void do_MonitorEnter (MonitorEnter* x) = 0; | |
| 187 virtual void do_MonitorExit (MonitorExit* x) = 0; | |
| 188 virtual void do_Intrinsic (Intrinsic* x) = 0; | |
| 189 virtual void do_BlockBegin (BlockBegin* x) = 0; | |
| 190 virtual void do_Goto (Goto* x) = 0; | |
| 191 virtual void do_If (If* x) = 0; | |
| 192 virtual void do_IfInstanceOf (IfInstanceOf* x) = 0; | |
| 193 virtual void do_TableSwitch (TableSwitch* x) = 0; | |
| 194 virtual void do_LookupSwitch (LookupSwitch* x) = 0; | |
| 195 virtual void do_Return (Return* x) = 0; | |
| 196 virtual void do_Throw (Throw* x) = 0; | |
| 197 virtual void do_Base (Base* x) = 0; | |
| 198 virtual void do_OsrEntry (OsrEntry* x) = 0; | |
| 199 virtual void do_ExceptionObject(ExceptionObject* x) = 0; | |
| 200 virtual void do_RoundFP (RoundFP* x) = 0; | |
| 201 virtual void do_UnsafeGetRaw (UnsafeGetRaw* x) = 0; | |
| 202 virtual void do_UnsafePutRaw (UnsafePutRaw* x) = 0; | |
| 203 virtual void do_UnsafeGetObject(UnsafeGetObject* x) = 0; | |
| 204 virtual void do_UnsafePutObject(UnsafePutObject* x) = 0; | |
| 205 virtual void do_UnsafePrefetchRead (UnsafePrefetchRead* x) = 0; | |
| 206 virtual void do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) = 0; | |
| 207 virtual void do_ProfileCall (ProfileCall* x) = 0; | |
| 1783 | 208 virtual void do_ProfileInvoke (ProfileInvoke* x) = 0; |
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209 virtual void do_RuntimeCall (RuntimeCall* x) = 0; |
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210 virtual void do_MemBar (MemBar* x) = 0; |
| 0 | 211 }; |
| 212 | |
| 213 | |
| 214 // Hashing support | |
| 215 // | |
| 216 // Note: This hash functions affect the performance | |
| 217 // of ValueMap - make changes carefully! | |
| 218 | |
| 219 #define HASH1(x1 ) ((intx)(x1)) | |
| 220 #define HASH2(x1, x2 ) ((HASH1(x1 ) << 7) ^ HASH1(x2)) | |
| 221 #define HASH3(x1, x2, x3 ) ((HASH2(x1, x2 ) << 7) ^ HASH1(x3)) | |
| 222 #define HASH4(x1, x2, x3, x4) ((HASH3(x1, x2, x3) << 7) ^ HASH1(x4)) | |
| 223 | |
| 224 | |
| 225 // The following macros are used to implement instruction-specific hashing. | |
| 226 // By default, each instruction implements hash() and is_equal(Value), used | |
| 227 // for value numbering/common subexpression elimination. The default imple- | |
| 228 // mentation disables value numbering. Each instruction which can be value- | |
| 229 // numbered, should define corresponding hash() and is_equal(Value) functions | |
| 230 // via the macros below. The f arguments specify all the values/op codes, etc. | |
| 231 // that need to be identical for two instructions to be identical. | |
| 232 // | |
| 233 // Note: The default implementation of hash() returns 0 in order to indicate | |
| 234 // that the instruction should not be considered for value numbering. | |
| 235 // The currently used hash functions do not guarantee that never a 0 | |
| 236 // is produced. While this is still correct, it may be a performance | |
| 237 // bug (no value numbering for that node). However, this situation is | |
| 238 // so unlikely, that we are not going to handle it specially. | |
| 239 | |
| 240 #define HASHING1(class_name, enabled, f1) \ | |
| 241 virtual intx hash() const { \ | |
| 242 return (enabled) ? HASH2(name(), f1) : 0; \ | |
| 243 } \ | |
| 244 virtual bool is_equal(Value v) const { \ | |
| 245 if (!(enabled) ) return false; \ | |
| 246 class_name* _v = v->as_##class_name(); \ | |
| 247 if (_v == NULL ) return false; \ | |
| 248 if (f1 != _v->f1) return false; \ | |
| 249 return true; \ | |
| 250 } \ | |
| 251 | |
| 252 | |
| 253 #define HASHING2(class_name, enabled, f1, f2) \ | |
| 254 virtual intx hash() const { \ | |
| 255 return (enabled) ? HASH3(name(), f1, f2) : 0; \ | |
| 256 } \ | |
| 257 virtual bool is_equal(Value v) const { \ | |
| 258 if (!(enabled) ) return false; \ | |
| 259 class_name* _v = v->as_##class_name(); \ | |
| 260 if (_v == NULL ) return false; \ | |
| 261 if (f1 != _v->f1) return false; \ | |
| 262 if (f2 != _v->f2) return false; \ | |
| 263 return true; \ | |
| 264 } \ | |
| 265 | |
| 266 | |
| 267 #define HASHING3(class_name, enabled, f1, f2, f3) \ | |
| 268 virtual intx hash() const { \ | |
| 269 return (enabled) ? HASH4(name(), f1, f2, f3) : 0; \ | |
| 270 } \ | |
| 271 virtual bool is_equal(Value v) const { \ | |
| 272 if (!(enabled) ) return false; \ | |
| 273 class_name* _v = v->as_##class_name(); \ | |
| 274 if (_v == NULL ) return false; \ | |
| 275 if (f1 != _v->f1) return false; \ | |
| 276 if (f2 != _v->f2) return false; \ | |
| 277 if (f3 != _v->f3) return false; \ | |
| 278 return true; \ | |
| 279 } \ | |
| 280 | |
| 281 | |
| 282 // The mother of all instructions... | |
| 283 | |
| 284 class Instruction: public CompilationResourceObj { | |
| 285 private: | |
| 286 int _id; // the unique instruction id | |
| 1819 | 287 #ifndef PRODUCT |
| 288 int _printable_bci; // the bci of the instruction for printing | |
| 289 #endif | |
| 0 | 290 int _use_count; // the number of instructions refering to this value (w/o prev/next); only roots can have use count = 0 or > 1 |
| 291 int _pin_state; // set of PinReason describing the reason for pinning | |
| 292 ValueType* _type; // the instruction value type | |
| 293 Instruction* _next; // the next instruction if any (NULL for BlockEnd instructions) | |
| 294 Instruction* _subst; // the substitution instruction if any | |
| 295 LIR_Opr _operand; // LIR specific information | |
| 296 unsigned int _flags; // Flag bits | |
| 297 | |
| 1819 | 298 ValueStack* _state_before; // Copy of state with input operands still on stack (or NULL) |
| 299 ValueStack* _exception_state; // Copy of state for exception handling | |
| 0 | 300 XHandlers* _exception_handlers; // Flat list of exception handlers covering this instruction |
| 301 | |
| 302 friend class UseCountComputer; | |
| 1584 | 303 friend class BlockBegin; |
| 0 | 304 |
| 1819 | 305 void update_exception_state(ValueStack* state); |
| 306 | |
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307 //protected: |
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308 public: |
| 0 | 309 void set_type(ValueType* type) { |
| 310 assert(type != NULL, "type must exist"); | |
| 311 _type = type; | |
| 312 } | |
| 313 | |
| 314 public: | |
| 1584 | 315 void* operator new(size_t size) { |
| 316 Compilation* c = Compilation::current(); | |
| 317 void* res = c->arena()->Amalloc(size); | |
| 318 ((Instruction*)res)->_id = c->get_next_id(); | |
| 319 return res; | |
| 320 } | |
| 321 | |
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322 static const int no_bci = -99; |
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323 |
| 0 | 324 enum InstructionFlag { |
| 325 NeedsNullCheckFlag = 0, | |
| 326 CanTrapFlag, | |
| 327 DirectCompareFlag, | |
| 328 IsEliminatedFlag, | |
| 329 IsSafepointFlag, | |
| 330 IsStaticFlag, | |
| 331 IsStrictfpFlag, | |
| 332 NeedsStoreCheckFlag, | |
| 333 NeedsWriteBarrierFlag, | |
| 334 PreservesStateFlag, | |
| 335 TargetIsFinalFlag, | |
| 336 TargetIsLoadedFlag, | |
| 337 TargetIsStrictfpFlag, | |
| 338 UnorderedIsTrueFlag, | |
| 339 NeedsPatchingFlag, | |
| 340 ThrowIncompatibleClassChangeErrorFlag, | |
| 341 ProfileMDOFlag, | |
| 1819 | 342 IsLinkedInBlockFlag, |
| 0 | 343 InstructionLastFlag |
| 344 }; | |
| 345 | |
| 346 public: | |
| 347 bool check_flag(InstructionFlag id) const { return (_flags & (1 << id)) != 0; } | |
| 348 void set_flag(InstructionFlag id, bool f) { _flags = f ? (_flags | (1 << id)) : (_flags & ~(1 << id)); }; | |
| 349 | |
| 350 // 'globally' used condition values | |
| 351 enum Condition { | |
| 352 eql, neq, lss, leq, gtr, geq | |
| 353 }; | |
| 354 | |
| 355 // Instructions may be pinned for many reasons and under certain conditions | |
| 356 // with enough knowledge it's possible to safely unpin them. | |
| 357 enum PinReason { | |
| 358 PinUnknown = 1 << 0 | |
| 359 , PinExplicitNullCheck = 1 << 3 | |
| 360 , PinStackForStateSplit= 1 << 12 | |
| 361 , PinStateSplitConstructor= 1 << 13 | |
| 362 , PinGlobalValueNumbering= 1 << 14 | |
| 363 }; | |
| 364 | |
| 365 static Condition mirror(Condition cond); | |
| 366 static Condition negate(Condition cond); | |
| 367 | |
| 368 // initialization | |
| 1584 | 369 static int number_of_instructions() { |
| 370 return Compilation::current()->number_of_instructions(); | |
| 371 } | |
| 0 | 372 |
| 373 // creation | |
| 1824 | 374 Instruction(ValueType* type, ValueStack* state_before = NULL, bool type_is_constant = false) |
| 1819 | 375 : _use_count(0) |
| 376 #ifndef PRODUCT | |
| 377 , _printable_bci(-99) | |
| 378 #endif | |
| 0 | 379 , _pin_state(0) |
| 380 , _type(type) | |
| 381 , _next(NULL) | |
| 382 , _subst(NULL) | |
| 383 , _flags(0) | |
| 384 , _operand(LIR_OprFact::illegalOpr) | |
| 1819 | 385 , _state_before(state_before) |
| 0 | 386 , _exception_handlers(NULL) |
| 387 { | |
| 1819 | 388 check_state(state_before); |
| 0 | 389 assert(type != NULL && (!type->is_constant() || type_is_constant), "type must exist"); |
| 1819 | 390 update_exception_state(_state_before); |
| 0 | 391 } |
| 392 | |
| 393 // accessors | |
| 394 int id() const { return _id; } | |
| 1819 | 395 #ifndef PRODUCT |
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396 bool has_printable_bci() const { return _printable_bci != -99; } |
| 1819 | 397 int printable_bci() const { assert(has_printable_bci(), "_printable_bci should have been set"); return _printable_bci; } |
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398 void set_printable_bci(int bci) { _printable_bci = bci; } |
| 1819 | 399 #endif |
| 0 | 400 int use_count() const { return _use_count; } |
| 401 int pin_state() const { return _pin_state; } | |
| 402 bool is_pinned() const { return _pin_state != 0 || PinAllInstructions; } | |
| 403 ValueType* type() const { return _type; } | |
| 404 Instruction* prev(BlockBegin* block); // use carefully, expensive operation | |
| 405 Instruction* next() const { return _next; } | |
| 406 bool has_subst() const { return _subst != NULL; } | |
| 407 Instruction* subst() { return _subst == NULL ? this : _subst->subst(); } | |
| 408 LIR_Opr operand() const { return _operand; } | |
| 409 | |
| 410 void set_needs_null_check(bool f) { set_flag(NeedsNullCheckFlag, f); } | |
| 411 bool needs_null_check() const { return check_flag(NeedsNullCheckFlag); } | |
| 1819 | 412 bool is_linked() const { return check_flag(IsLinkedInBlockFlag); } |
| 413 bool can_be_linked() { return as_Local() == NULL && as_Phi() == NULL; } | |
| 0 | 414 |
| 415 bool has_uses() const { return use_count() > 0; } | |
| 1819 | 416 ValueStack* state_before() const { return _state_before; } |
| 417 ValueStack* exception_state() const { return _exception_state; } | |
| 418 virtual bool needs_exception_state() const { return true; } | |
| 0 | 419 XHandlers* exception_handlers() const { return _exception_handlers; } |
| 420 | |
| 421 // manipulation | |
| 422 void pin(PinReason reason) { _pin_state |= reason; } | |
| 423 void pin() { _pin_state |= PinUnknown; } | |
| 424 // DANGEROUS: only used by EliminateStores | |
| 425 void unpin(PinReason reason) { assert((reason & PinUnknown) == 0, "can't unpin unknown state"); _pin_state &= ~reason; } | |
| 1819 | 426 |
| 427 Instruction* set_next(Instruction* next) { | |
| 428 assert(next->has_printable_bci(), "_printable_bci should have been set"); | |
| 429 assert(next != NULL, "must not be NULL"); | |
| 430 assert(as_BlockEnd() == NULL, "BlockEnd instructions must have no next"); | |
| 431 assert(next->can_be_linked(), "shouldn't link these instructions into list"); | |
| 432 | |
| 433 next->set_flag(Instruction::IsLinkedInBlockFlag, true); | |
| 434 _next = next; | |
| 435 return next; | |
| 436 } | |
| 0 | 437 |
| 438 Instruction* set_next(Instruction* next, int bci) { | |
| 1819 | 439 #ifndef PRODUCT |
| 440 next->set_printable_bci(bci); | |
| 441 #endif | |
| 442 return set_next(next); | |
| 0 | 443 } |
| 444 | |
| 445 void set_subst(Instruction* subst) { | |
| 446 assert(subst == NULL || | |
| 447 type()->base() == subst->type()->base() || | |
| 448 subst->type()->base() == illegalType, "type can't change"); | |
| 449 _subst = subst; | |
| 450 } | |
| 451 void set_exception_handlers(XHandlers *xhandlers) { _exception_handlers = xhandlers; } | |
| 1819 | 452 void set_exception_state(ValueStack* s) { check_state(s); _exception_state = s; } |
| 0 | 453 |
| 454 // machine-specifics | |
| 455 void set_operand(LIR_Opr operand) { assert(operand != LIR_OprFact::illegalOpr, "operand must exist"); _operand = operand; } | |
| 456 void clear_operand() { _operand = LIR_OprFact::illegalOpr; } | |
| 457 | |
| 458 // generic | |
| 459 virtual Instruction* as_Instruction() { return this; } // to satisfy HASHING1 macro | |
| 1899 | 460 virtual Phi* as_Phi() { return NULL; } |
| 0 | 461 virtual Local* as_Local() { return NULL; } |
| 462 virtual Constant* as_Constant() { return NULL; } | |
| 463 virtual AccessField* as_AccessField() { return NULL; } | |
| 464 virtual LoadField* as_LoadField() { return NULL; } | |
| 465 virtual StoreField* as_StoreField() { return NULL; } | |
| 466 virtual AccessArray* as_AccessArray() { return NULL; } | |
| 467 virtual ArrayLength* as_ArrayLength() { return NULL; } | |
| 468 virtual AccessIndexed* as_AccessIndexed() { return NULL; } | |
| 469 virtual LoadIndexed* as_LoadIndexed() { return NULL; } | |
| 470 virtual StoreIndexed* as_StoreIndexed() { return NULL; } | |
| 471 virtual NegateOp* as_NegateOp() { return NULL; } | |
| 472 virtual Op2* as_Op2() { return NULL; } | |
| 473 virtual ArithmeticOp* as_ArithmeticOp() { return NULL; } | |
| 474 virtual ShiftOp* as_ShiftOp() { return NULL; } | |
| 475 virtual LogicOp* as_LogicOp() { return NULL; } | |
| 476 virtual CompareOp* as_CompareOp() { return NULL; } | |
| 477 virtual IfOp* as_IfOp() { return NULL; } | |
| 478 virtual Convert* as_Convert() { return NULL; } | |
| 479 virtual NullCheck* as_NullCheck() { return NULL; } | |
| 480 virtual OsrEntry* as_OsrEntry() { return NULL; } | |
| 481 virtual StateSplit* as_StateSplit() { return NULL; } | |
| 482 virtual Invoke* as_Invoke() { return NULL; } | |
| 483 virtual NewInstance* as_NewInstance() { return NULL; } | |
| 484 virtual NewArray* as_NewArray() { return NULL; } | |
| 485 virtual NewTypeArray* as_NewTypeArray() { return NULL; } | |
| 486 virtual NewObjectArray* as_NewObjectArray() { return NULL; } | |
| 487 virtual NewMultiArray* as_NewMultiArray() { return NULL; } | |
| 488 virtual TypeCheck* as_TypeCheck() { return NULL; } | |
| 489 virtual CheckCast* as_CheckCast() { return NULL; } | |
| 490 virtual InstanceOf* as_InstanceOf() { return NULL; } | |
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491 virtual TypeCast* as_TypeCast() { return NULL; } |
| 0 | 492 virtual AccessMonitor* as_AccessMonitor() { return NULL; } |
| 493 virtual MonitorEnter* as_MonitorEnter() { return NULL; } | |
| 494 virtual MonitorExit* as_MonitorExit() { return NULL; } | |
| 495 virtual Intrinsic* as_Intrinsic() { return NULL; } | |
| 496 virtual BlockBegin* as_BlockBegin() { return NULL; } | |
| 497 virtual BlockEnd* as_BlockEnd() { return NULL; } | |
| 498 virtual Goto* as_Goto() { return NULL; } | |
| 499 virtual If* as_If() { return NULL; } | |
| 500 virtual IfInstanceOf* as_IfInstanceOf() { return NULL; } | |
| 501 virtual TableSwitch* as_TableSwitch() { return NULL; } | |
| 502 virtual LookupSwitch* as_LookupSwitch() { return NULL; } | |
| 503 virtual Return* as_Return() { return NULL; } | |
| 504 virtual Throw* as_Throw() { return NULL; } | |
| 505 virtual Base* as_Base() { return NULL; } | |
| 506 virtual RoundFP* as_RoundFP() { return NULL; } | |
| 507 virtual ExceptionObject* as_ExceptionObject() { return NULL; } | |
| 508 virtual UnsafeOp* as_UnsafeOp() { return NULL; } | |
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509 virtual ProfileInvoke* as_ProfileInvoke() { return NULL; } |
| 0 | 510 |
| 511 virtual void visit(InstructionVisitor* v) = 0; | |
| 512 | |
| 513 virtual bool can_trap() const { return false; } | |
| 514 | |
| 1584 | 515 virtual void input_values_do(ValueVisitor* f) = 0; |
| 1819 | 516 virtual void state_values_do(ValueVisitor* f); |
| 1584 | 517 virtual void other_values_do(ValueVisitor* f) { /* usually no other - override on demand */ } |
| 518 void values_do(ValueVisitor* f) { input_values_do(f); state_values_do(f); other_values_do(f); } | |
| 0 | 519 |
| 520 virtual ciType* exact_type() const { return NULL; } | |
| 521 virtual ciType* declared_type() const { return NULL; } | |
| 522 | |
| 523 // hashing | |
| 524 virtual const char* name() const = 0; | |
| 525 HASHING1(Instruction, false, id()) // hashing disabled by default | |
| 526 | |
| 527 // debugging | |
| 1819 | 528 static void check_state(ValueStack* state) PRODUCT_RETURN; |
| 0 | 529 void print() PRODUCT_RETURN; |
| 530 void print_line() PRODUCT_RETURN; | |
| 531 void print(InstructionPrinter& ip) PRODUCT_RETURN; | |
| 532 }; | |
| 533 | |
| 534 | |
| 535 // The following macros are used to define base (i.e., non-leaf) | |
| 536 // and leaf instruction classes. They define class-name related | |
| 537 // generic functionality in one place. | |
| 538 | |
| 539 #define BASE(class_name, super_class_name) \ | |
| 540 class class_name: public super_class_name { \ | |
| 541 public: \ | |
| 542 virtual class_name* as_##class_name() { return this; } \ | |
| 543 | |
| 544 | |
| 545 #define LEAF(class_name, super_class_name) \ | |
| 546 BASE(class_name, super_class_name) \ | |
| 547 public: \ | |
| 548 virtual const char* name() const { return #class_name; } \ | |
| 549 virtual void visit(InstructionVisitor* v) { v->do_##class_name(this); } \ | |
| 550 | |
| 551 | |
| 552 // Debugging support | |
| 553 | |
| 1584 | 554 |
| 0 | 555 #ifdef ASSERT |
| 1584 | 556 class AssertValues: public ValueVisitor { |
| 557 void visit(Value* x) { assert((*x) != NULL, "value must exist"); } | |
| 558 }; | |
| 559 #define ASSERT_VALUES { AssertValues assert_value; values_do(&assert_value); } | |
| 0 | 560 #else |
| 561 #define ASSERT_VALUES | |
| 562 #endif // ASSERT | |
| 563 | |
| 564 | |
| 565 // A Phi is a phi function in the sense of SSA form. It stands for | |
| 566 // the value of a local variable at the beginning of a join block. | |
| 567 // A Phi consists of n operands, one for every incoming branch. | |
| 568 | |
| 569 LEAF(Phi, Instruction) | |
| 570 private: | |
| 571 BlockBegin* _block; // the block to which the phi function belongs | |
| 572 int _pf_flags; // the flags of the phi function | |
| 573 int _index; // to value on operand stack (index < 0) or to local | |
| 574 public: | |
| 575 // creation | |
| 576 Phi(ValueType* type, BlockBegin* b, int index) | |
| 577 : Instruction(type->base()) | |
| 578 , _pf_flags(0) | |
| 579 , _block(b) | |
| 580 , _index(index) | |
| 581 { | |
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582 NOT_PRODUCT(set_printable_bci(Value(b)->printable_bci())); |
| 0 | 583 if (type->is_illegal()) { |
| 584 make_illegal(); | |
| 585 } | |
| 586 } | |
| 587 | |
| 588 // flags | |
| 589 enum Flag { | |
| 590 no_flag = 0, | |
| 591 visited = 1 << 0, | |
| 592 cannot_simplify = 1 << 1 | |
| 593 }; | |
| 594 | |
| 595 // accessors | |
| 596 bool is_local() const { return _index >= 0; } | |
| 597 bool is_on_stack() const { return !is_local(); } | |
| 598 int local_index() const { assert(is_local(), ""); return _index; } | |
| 599 int stack_index() const { assert(is_on_stack(), ""); return -(_index+1); } | |
| 600 | |
| 601 Value operand_at(int i) const; | |
| 602 int operand_count() const; | |
| 603 | |
| 604 BlockBegin* block() const { return _block; } | |
| 605 | |
| 606 void set(Flag f) { _pf_flags |= f; } | |
| 607 void clear(Flag f) { _pf_flags &= ~f; } | |
| 608 bool is_set(Flag f) const { return (_pf_flags & f) != 0; } | |
| 609 | |
| 610 // Invalidates phis corresponding to merges of locals of two different types | |
| 611 // (these should never be referenced, otherwise the bytecodes are illegal) | |
| 612 void make_illegal() { | |
| 613 set(cannot_simplify); | |
| 614 set_type(illegalType); | |
| 615 } | |
| 616 | |
| 617 bool is_illegal() const { | |
| 618 return type()->is_illegal(); | |
| 619 } | |
| 620 | |
| 621 // generic | |
| 1584 | 622 virtual void input_values_do(ValueVisitor* f) { |
| 0 | 623 } |
| 624 }; | |
| 625 | |
| 626 | |
| 627 // A local is a placeholder for an incoming argument to a function call. | |
| 628 LEAF(Local, Instruction) | |
| 629 private: | |
| 630 int _java_index; // the local index within the method to which the local belongs | |
| 2446 | 631 ciType* _declared_type; |
| 0 | 632 public: |
| 633 // creation | |
| 2446 | 634 Local(ciType* declared, ValueType* type, int index) |
| 0 | 635 : Instruction(type) |
| 636 , _java_index(index) | |
| 2446 | 637 , _declared_type(declared) |
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638 { |
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639 NOT_PRODUCT(set_printable_bci(-1)); |
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640 } |
| 0 | 641 |
| 642 // accessors | |
| 643 int java_index() const { return _java_index; } | |
| 644 | |
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645 virtual ciType* declared_type() const { return _declared_type; } |
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646 virtual ciType* exact_type() const; |
| 2446 | 647 |
| 0 | 648 // generic |
| 1584 | 649 virtual void input_values_do(ValueVisitor* f) { /* no values */ } |
| 0 | 650 }; |
| 651 | |
| 652 | |
| 653 LEAF(Constant, Instruction) | |
| 654 public: | |
| 655 // creation | |
| 656 Constant(ValueType* type): | |
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657 Instruction(type, NULL, /*type_is_constant*/ true) |
| 1819 | 658 { |
| 0 | 659 assert(type->is_constant(), "must be a constant"); |
| 660 } | |
| 661 | |
| 1819 | 662 Constant(ValueType* type, ValueStack* state_before): |
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663 Instruction(type, state_before, /*type_is_constant*/ true) |
| 1819 | 664 { |
| 665 assert(state_before != NULL, "only used for constants which need patching"); | |
| 0 | 666 assert(type->is_constant(), "must be a constant"); |
| 667 // since it's patching it needs to be pinned | |
| 668 pin(); | |
| 669 } | |
| 670 | |
| 1819 | 671 virtual bool can_trap() const { return state_before() != NULL; } |
| 1584 | 672 virtual void input_values_do(ValueVisitor* f) { /* no values */ } |
| 0 | 673 |
| 674 virtual intx hash() const; | |
| 675 virtual bool is_equal(Value v) const; | |
| 676 | |
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677 virtual ciType* exact_type() const; |
| 1899 | 678 |
| 679 enum CompareResult { not_comparable = -1, cond_false, cond_true }; | |
| 680 | |
| 681 virtual CompareResult compare(Instruction::Condition condition, Value right) const; | |
| 682 BlockBegin* compare(Instruction::Condition cond, Value right, | |
| 683 BlockBegin* true_sux, BlockBegin* false_sux) const { | |
| 684 switch (compare(cond, right)) { | |
| 685 case not_comparable: | |
| 686 return NULL; | |
| 687 case cond_false: | |
| 688 return false_sux; | |
| 689 case cond_true: | |
| 690 return true_sux; | |
| 691 default: | |
| 692 ShouldNotReachHere(); | |
| 693 return NULL; | |
| 694 } | |
| 695 } | |
| 0 | 696 }; |
| 697 | |
| 698 | |
| 699 BASE(AccessField, Instruction) | |
| 700 private: | |
| 701 Value _obj; | |
| 702 int _offset; | |
| 703 ciField* _field; | |
| 704 NullCheck* _explicit_null_check; // For explicit null check elimination | |
| 705 | |
| 706 public: | |
| 707 // creation | |
| 1819 | 708 AccessField(Value obj, int offset, ciField* field, bool is_static, |
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709 ValueStack* state_before, bool needs_patching) |
| 1819 | 710 : Instruction(as_ValueType(field->type()->basic_type()), state_before) |
| 0 | 711 , _obj(obj) |
| 712 , _offset(offset) | |
| 713 , _field(field) | |
| 714 , _explicit_null_check(NULL) | |
| 715 { | |
| 716 set_needs_null_check(!is_static); | |
| 717 set_flag(IsStaticFlag, is_static); | |
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718 set_flag(NeedsPatchingFlag, needs_patching); |
| 0 | 719 ASSERT_VALUES |
| 720 // pin of all instructions with memory access | |
| 721 pin(); | |
| 722 } | |
| 723 | |
| 724 // accessors | |
| 725 Value obj() const { return _obj; } | |
| 726 int offset() const { return _offset; } | |
| 727 ciField* field() const { return _field; } | |
| 728 BasicType field_type() const { return _field->type()->basic_type(); } | |
| 729 bool is_static() const { return check_flag(IsStaticFlag); } | |
| 730 NullCheck* explicit_null_check() const { return _explicit_null_check; } | |
| 731 bool needs_patching() const { return check_flag(NeedsPatchingFlag); } | |
| 732 | |
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733 // Unresolved getstatic and putstatic can cause initialization. |
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734 // Technically it occurs at the Constant that materializes the base |
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735 // of the static fields but it's simpler to model it here. |
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736 bool is_init_point() const { return is_static() && (needs_patching() || !_field->holder()->is_initialized()); } |
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737 |
| 0 | 738 // manipulation |
| 1819 | 739 |
| 0 | 740 // Under certain circumstances, if a previous NullCheck instruction |
| 741 // proved the target object non-null, we can eliminate the explicit | |
| 742 // null check and do an implicit one, simply specifying the debug | |
| 743 // information from the NullCheck. This field should only be consulted | |
| 744 // if needs_null_check() is true. | |
| 745 void set_explicit_null_check(NullCheck* check) { _explicit_null_check = check; } | |
| 746 | |
| 747 // generic | |
| 748 virtual bool can_trap() const { return needs_null_check() || needs_patching(); } | |
| 1584 | 749 virtual void input_values_do(ValueVisitor* f) { f->visit(&_obj); } |
| 0 | 750 }; |
| 751 | |
| 752 | |
| 753 LEAF(LoadField, AccessField) | |
| 754 public: | |
| 755 // creation | |
| 1819 | 756 LoadField(Value obj, int offset, ciField* field, bool is_static, |
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757 ValueStack* state_before, bool needs_patching) |
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758 : AccessField(obj, offset, field, is_static, state_before, needs_patching) |
| 0 | 759 {} |
| 760 | |
| 761 ciType* declared_type() const; | |
| 762 ciType* exact_type() const; | |
| 763 | |
| 764 // generic | |
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765 HASHING2(LoadField, !needs_patching() && !field()->is_volatile(), obj()->subst(), offset()) // cannot be eliminated if needs patching or if volatile |
| 0 | 766 }; |
| 767 | |
| 768 | |
| 769 LEAF(StoreField, AccessField) | |
| 770 private: | |
| 771 Value _value; | |
| 772 | |
| 773 public: | |
| 774 // creation | |
| 1819 | 775 StoreField(Value obj, int offset, ciField* field, Value value, bool is_static, |
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776 ValueStack* state_before, bool needs_patching) |
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777 : AccessField(obj, offset, field, is_static, state_before, needs_patching) |
| 0 | 778 , _value(value) |
| 779 { | |
| 780 set_flag(NeedsWriteBarrierFlag, as_ValueType(field_type())->is_object()); | |
| 781 ASSERT_VALUES | |
| 782 pin(); | |
| 783 } | |
| 784 | |
| 785 // accessors | |
| 786 Value value() const { return _value; } | |
| 787 bool needs_write_barrier() const { return check_flag(NeedsWriteBarrierFlag); } | |
| 788 | |
| 789 // generic | |
| 1584 | 790 virtual void input_values_do(ValueVisitor* f) { AccessField::input_values_do(f); f->visit(&_value); } |
| 0 | 791 }; |
| 792 | |
| 793 | |
| 794 BASE(AccessArray, Instruction) | |
| 795 private: | |
| 796 Value _array; | |
| 797 | |
| 798 public: | |
| 799 // creation | |
| 1819 | 800 AccessArray(ValueType* type, Value array, ValueStack* state_before) |
| 801 : Instruction(type, state_before) | |
| 0 | 802 , _array(array) |
| 1819 | 803 { |
| 0 | 804 set_needs_null_check(true); |
| 805 ASSERT_VALUES | |
| 806 pin(); // instruction with side effect (null exception or range check throwing) | |
| 807 } | |
| 808 | |
| 809 Value array() const { return _array; } | |
| 810 | |
| 811 // generic | |
| 812 virtual bool can_trap() const { return needs_null_check(); } | |
| 1584 | 813 virtual void input_values_do(ValueVisitor* f) { f->visit(&_array); } |
| 0 | 814 }; |
| 815 | |
| 816 | |
| 817 LEAF(ArrayLength, AccessArray) | |
| 818 private: | |
| 819 NullCheck* _explicit_null_check; // For explicit null check elimination | |
| 820 | |
| 821 public: | |
| 822 // creation | |
| 1819 | 823 ArrayLength(Value array, ValueStack* state_before) |
| 824 : AccessArray(intType, array, state_before) | |
| 0 | 825 , _explicit_null_check(NULL) {} |
| 826 | |
| 827 // accessors | |
| 828 NullCheck* explicit_null_check() const { return _explicit_null_check; } | |
| 829 | |
| 830 // setters | |
| 831 // See LoadField::set_explicit_null_check for documentation | |
| 832 void set_explicit_null_check(NullCheck* check) { _explicit_null_check = check; } | |
| 833 | |
| 834 // generic | |
| 835 HASHING1(ArrayLength, true, array()->subst()) | |
| 836 }; | |
| 837 | |
| 838 | |
| 839 BASE(AccessIndexed, AccessArray) | |
| 840 private: | |
| 841 Value _index; | |
| 842 Value _length; | |
| 843 BasicType _elt_type; | |
| 844 | |
| 845 public: | |
| 846 // creation | |
| 1819 | 847 AccessIndexed(Value array, Value index, Value length, BasicType elt_type, ValueStack* state_before) |
| 848 : AccessArray(as_ValueType(elt_type), array, state_before) | |
| 0 | 849 , _index(index) |
| 850 , _length(length) | |
| 851 , _elt_type(elt_type) | |
| 852 { | |
| 853 ASSERT_VALUES | |
| 854 } | |
| 855 | |
| 856 // accessors | |
| 857 Value index() const { return _index; } | |
| 858 Value length() const { return _length; } | |
| 859 BasicType elt_type() const { return _elt_type; } | |
| 860 | |
| 861 // perform elimination of range checks involving constants | |
| 862 bool compute_needs_range_check(); | |
| 863 | |
| 864 // generic | |
| 1584 | 865 virtual void input_values_do(ValueVisitor* f) { AccessArray::input_values_do(f); f->visit(&_index); if (_length != NULL) f->visit(&_length); } |
| 0 | 866 }; |
| 867 | |
| 868 | |
| 869 LEAF(LoadIndexed, AccessIndexed) | |
| 870 private: | |
| 871 NullCheck* _explicit_null_check; // For explicit null check elimination | |
| 872 | |
| 873 public: | |
| 874 // creation | |
| 1819 | 875 LoadIndexed(Value array, Value index, Value length, BasicType elt_type, ValueStack* state_before) |
| 876 : AccessIndexed(array, index, length, elt_type, state_before) | |
| 0 | 877 , _explicit_null_check(NULL) {} |
| 878 | |
| 879 // accessors | |
| 880 NullCheck* explicit_null_check() const { return _explicit_null_check; } | |
| 881 | |
| 882 // setters | |
| 883 // See LoadField::set_explicit_null_check for documentation | |
| 884 void set_explicit_null_check(NullCheck* check) { _explicit_null_check = check; } | |
| 885 | |
| 886 ciType* exact_type() const; | |
| 887 ciType* declared_type() const; | |
| 888 | |
| 889 // generic | |
| 890 HASHING2(LoadIndexed, true, array()->subst(), index()->subst()) | |
| 891 }; | |
| 892 | |
| 893 | |
| 894 LEAF(StoreIndexed, AccessIndexed) | |
| 895 private: | |
| 896 Value _value; | |
| 897 | |
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898 ciMethod* _profiled_method; |
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899 int _profiled_bci; |
| 0 | 900 public: |
| 901 // creation | |
| 1819 | 902 StoreIndexed(Value array, Value index, Value length, BasicType elt_type, Value value, ValueStack* state_before) |
| 903 : AccessIndexed(array, index, length, elt_type, state_before) | |
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904 , _value(value), _profiled_method(NULL), _profiled_bci(0) |
| 0 | 905 { |
| 906 set_flag(NeedsWriteBarrierFlag, (as_ValueType(elt_type)->is_object())); | |
| 907 set_flag(NeedsStoreCheckFlag, (as_ValueType(elt_type)->is_object())); | |
| 908 ASSERT_VALUES | |
| 909 pin(); | |
| 910 } | |
| 911 | |
| 912 // accessors | |
| 913 Value value() const { return _value; } | |
| 914 bool needs_write_barrier() const { return check_flag(NeedsWriteBarrierFlag); } | |
| 915 bool needs_store_check() const { return check_flag(NeedsStoreCheckFlag); } | |
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916 // Helpers for MethodData* profiling |
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917 void set_should_profile(bool value) { set_flag(ProfileMDOFlag, value); } |
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918 void set_profiled_method(ciMethod* method) { _profiled_method = method; } |
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919 void set_profiled_bci(int bci) { _profiled_bci = bci; } |
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920 bool should_profile() const { return check_flag(ProfileMDOFlag); } |
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921 ciMethod* profiled_method() const { return _profiled_method; } |
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922 int profiled_bci() const { return _profiled_bci; } |
| 0 | 923 // generic |
| 1584 | 924 virtual void input_values_do(ValueVisitor* f) { AccessIndexed::input_values_do(f); f->visit(&_value); } |
| 0 | 925 }; |
| 926 | |
| 927 | |
| 928 LEAF(NegateOp, Instruction) | |
| 929 private: | |
| 930 Value _x; | |
| 931 | |
| 932 public: | |
| 933 // creation | |
| 934 NegateOp(Value x) : Instruction(x->type()->base()), _x(x) { | |
| 935 ASSERT_VALUES | |
| 936 } | |
| 937 | |
| 938 // accessors | |
| 939 Value x() const { return _x; } | |
| 940 | |
| 941 // generic | |
| 1584 | 942 virtual void input_values_do(ValueVisitor* f) { f->visit(&_x); } |
| 0 | 943 }; |
| 944 | |
| 945 | |
| 946 BASE(Op2, Instruction) | |
| 947 private: | |
| 948 Bytecodes::Code _op; | |
| 949 Value _x; | |
| 950 Value _y; | |
| 951 | |
| 952 public: | |
| 953 // creation | |
| 1819 | 954 Op2(ValueType* type, Bytecodes::Code op, Value x, Value y, ValueStack* state_before = NULL) |
| 955 : Instruction(type, state_before) | |
| 956 , _op(op) | |
| 957 , _x(x) | |
| 958 , _y(y) | |
| 959 { | |
| 0 | 960 ASSERT_VALUES |
| 961 } | |
| 962 | |
| 963 // accessors | |
| 964 Bytecodes::Code op() const { return _op; } | |
| 965 Value x() const { return _x; } | |
| 966 Value y() const { return _y; } | |
| 967 | |
| 968 // manipulators | |
| 969 void swap_operands() { | |
| 970 assert(is_commutative(), "operation must be commutative"); | |
| 971 Value t = _x; _x = _y; _y = t; | |
| 972 } | |
| 973 | |
| 974 // generic | |
| 975 virtual bool is_commutative() const { return false; } | |
| 1584 | 976 virtual void input_values_do(ValueVisitor* f) { f->visit(&_x); f->visit(&_y); } |
| 0 | 977 }; |
| 978 | |
| 979 | |
| 980 LEAF(ArithmeticOp, Op2) | |
| 981 public: | |
| 982 // creation | |
| 1819 | 983 ArithmeticOp(Bytecodes::Code op, Value x, Value y, bool is_strictfp, ValueStack* state_before) |
| 984 : Op2(x->type()->meet(y->type()), op, x, y, state_before) | |
| 985 { | |
| 0 | 986 set_flag(IsStrictfpFlag, is_strictfp); |
| 987 if (can_trap()) pin(); | |
| 988 } | |
| 989 | |
| 990 // accessors | |
| 991 bool is_strictfp() const { return check_flag(IsStrictfpFlag); } | |
| 992 | |
| 993 // generic | |
| 994 virtual bool is_commutative() const; | |
| 995 virtual bool can_trap() const; | |
| 996 HASHING3(Op2, true, op(), x()->subst(), y()->subst()) | |
| 997 }; | |
| 998 | |
| 999 | |
| 1000 LEAF(ShiftOp, Op2) | |
| 1001 public: | |
| 1002 // creation | |
| 1003 ShiftOp(Bytecodes::Code op, Value x, Value s) : Op2(x->type()->base(), op, x, s) {} | |
| 1004 | |
| 1005 // generic | |
| 1006 HASHING3(Op2, true, op(), x()->subst(), y()->subst()) | |
| 1007 }; | |
| 1008 | |
| 1009 | |
| 1010 LEAF(LogicOp, Op2) | |
| 1011 public: | |
| 1012 // creation | |
| 1013 LogicOp(Bytecodes::Code op, Value x, Value y) : Op2(x->type()->meet(y->type()), op, x, y) {} | |
| 1014 | |
| 1015 // generic | |
| 1016 virtual bool is_commutative() const; | |
| 1017 HASHING3(Op2, true, op(), x()->subst(), y()->subst()) | |
| 1018 }; | |
| 1019 | |
| 1020 | |
| 1021 LEAF(CompareOp, Op2) | |
| 1022 public: | |
| 1023 // creation | |
| 1024 CompareOp(Bytecodes::Code op, Value x, Value y, ValueStack* state_before) | |
| 1819 | 1025 : Op2(intType, op, x, y, state_before) |
| 0 | 1026 {} |
| 1027 | |
| 1028 // generic | |
| 1029 HASHING3(Op2, true, op(), x()->subst(), y()->subst()) | |
| 1030 }; | |
| 1031 | |
| 1032 | |
| 1033 LEAF(IfOp, Op2) | |
| 1034 private: | |
| 1035 Value _tval; | |
| 1036 Value _fval; | |
| 1037 | |
| 1038 public: | |
| 1039 // creation | |
| 1040 IfOp(Value x, Condition cond, Value y, Value tval, Value fval) | |
| 1041 : Op2(tval->type()->meet(fval->type()), (Bytecodes::Code)cond, x, y) | |
| 1042 , _tval(tval) | |
| 1043 , _fval(fval) | |
| 1044 { | |
| 1045 ASSERT_VALUES | |
| 1046 assert(tval->type()->tag() == fval->type()->tag(), "types must match"); | |
| 1047 } | |
| 1048 | |
| 1049 // accessors | |
| 1050 virtual bool is_commutative() const; | |
| 1051 Bytecodes::Code op() const { ShouldNotCallThis(); return Bytecodes::_illegal; } | |
| 1052 Condition cond() const { return (Condition)Op2::op(); } | |
| 1053 Value tval() const { return _tval; } | |
| 1054 Value fval() const { return _fval; } | |
| 1055 | |
| 1056 // generic | |
| 1584 | 1057 virtual void input_values_do(ValueVisitor* f) { Op2::input_values_do(f); f->visit(&_tval); f->visit(&_fval); } |
| 0 | 1058 }; |
| 1059 | |
| 1060 | |
| 1061 LEAF(Convert, Instruction) | |
| 1062 private: | |
| 1063 Bytecodes::Code _op; | |
| 1064 Value _value; | |
| 1065 | |
| 1066 public: | |
| 1067 // creation | |
| 1068 Convert(Bytecodes::Code op, Value value, ValueType* to_type) : Instruction(to_type), _op(op), _value(value) { | |
| 1069 ASSERT_VALUES | |
| 1070 } | |
| 1071 | |
| 1072 // accessors | |
| 1073 Bytecodes::Code op() const { return _op; } | |
| 1074 Value value() const { return _value; } | |
| 1075 | |
| 1076 // generic | |
| 1584 | 1077 virtual void input_values_do(ValueVisitor* f) { f->visit(&_value); } |
| 0 | 1078 HASHING2(Convert, true, op(), value()->subst()) |
| 1079 }; | |
| 1080 | |
| 1081 | |
| 1082 LEAF(NullCheck, Instruction) | |
| 1083 private: | |
| 1084 Value _obj; | |
| 1085 | |
| 1086 public: | |
| 1087 // creation | |
| 1819 | 1088 NullCheck(Value obj, ValueStack* state_before) |
| 1089 : Instruction(obj->type()->base(), state_before) | |
| 1090 , _obj(obj) | |
| 1091 { | |
| 0 | 1092 ASSERT_VALUES |
| 1093 set_can_trap(true); | |
| 1094 assert(_obj->type()->is_object(), "null check must be applied to objects only"); | |
| 1095 pin(Instruction::PinExplicitNullCheck); | |
| 1096 } | |
| 1097 | |
| 1098 // accessors | |
| 1099 Value obj() const { return _obj; } | |
| 1100 | |
| 1101 // setters | |
| 1102 void set_can_trap(bool can_trap) { set_flag(CanTrapFlag, can_trap); } | |
| 1103 | |
| 1104 // generic | |
| 1105 virtual bool can_trap() const { return check_flag(CanTrapFlag); /* null-check elimination sets to false */ } | |
| 1584 | 1106 virtual void input_values_do(ValueVisitor* f) { f->visit(&_obj); } |
| 0 | 1107 HASHING1(NullCheck, true, obj()->subst()) |
| 1108 }; | |
| 1109 | |
| 1110 | |
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1111 // This node is supposed to cast the type of another node to a more precise |
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1112 // declared type. |
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1113 LEAF(TypeCast, Instruction) |
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1114 private: |
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1115 ciType* _declared_type; |
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1116 Value _obj; |
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1117 |
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1118 public: |
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1119 // The type of this node is the same type as the object type (and it might be constant). |
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1120 TypeCast(ciType* type, Value obj, ValueStack* state_before) |
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1121 : Instruction(obj->type(), state_before, obj->type()->is_constant()), |
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1122 _declared_type(type), |
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1123 _obj(obj) {} |
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1124 |
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1125 // accessors |
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1126 ciType* declared_type() const { return _declared_type; } |
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1127 Value obj() const { return _obj; } |
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1128 |
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1129 // generic |
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1130 virtual void input_values_do(ValueVisitor* f) { f->visit(&_obj); } |
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1131 }; |
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1132 |
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1133 |
| 0 | 1134 BASE(StateSplit, Instruction) |
| 1135 private: | |
| 1136 ValueStack* _state; | |
| 1137 | |
| 1138 protected: | |
| 1139 static void substitute(BlockList& list, BlockBegin* old_block, BlockBegin* new_block); | |
| 1140 | |
| 1141 public: | |
| 1142 // creation | |
| 1819 | 1143 StateSplit(ValueType* type, ValueStack* state_before = NULL) |
| 1144 : Instruction(type, state_before) | |
| 1145 , _state(NULL) | |
| 1146 { | |
| 0 | 1147 pin(PinStateSplitConstructor); |
| 1148 } | |
| 1149 | |
| 1150 // accessors | |
| 1151 ValueStack* state() const { return _state; } | |
| 1152 IRScope* scope() const; // the state's scope | |
| 1153 | |
| 1154 // manipulation | |
| 1819 | 1155 void set_state(ValueStack* state) { assert(_state == NULL, "overwriting existing state"); check_state(state); _state = state; } |
| 0 | 1156 |
| 1157 // generic | |
| 1584 | 1158 virtual void input_values_do(ValueVisitor* f) { /* no values */ } |
| 1159 virtual void state_values_do(ValueVisitor* f); | |
| 0 | 1160 }; |
| 1161 | |
| 1162 | |
| 1163 LEAF(Invoke, StateSplit) | |
| 1164 private: | |
| 1295 | 1165 Bytecodes::Code _code; |
| 1166 Value _recv; | |
| 1167 Values* _args; | |
| 1168 BasicTypeList* _signature; | |
| 1169 int _vtable_index; | |
| 1170 ciMethod* _target; | |
| 0 | 1171 |
| 1172 public: | |
| 1173 // creation | |
| 1174 Invoke(Bytecodes::Code code, ValueType* result_type, Value recv, Values* args, | |
| 1295 | 1175 int vtable_index, ciMethod* target, ValueStack* state_before); |
| 0 | 1176 |
| 1177 // accessors | |
| 1178 Bytecodes::Code code() const { return _code; } | |
| 1179 Value receiver() const { return _recv; } | |
| 1180 bool has_receiver() const { return receiver() != NULL; } | |
| 1181 int number_of_arguments() const { return _args->length(); } | |
| 1182 Value argument_at(int i) const { return _args->at(i); } | |
| 1183 int vtable_index() const { return _vtable_index; } | |
| 1184 BasicTypeList* signature() const { return _signature; } | |
| 1185 ciMethod* target() const { return _target; } | |
| 1186 | |
| 2446 | 1187 ciType* declared_type() const; |
| 1188 | |
| 0 | 1189 // Returns false if target is not loaded |
| 1190 bool target_is_final() const { return check_flag(TargetIsFinalFlag); } | |
| 1191 bool target_is_loaded() const { return check_flag(TargetIsLoadedFlag); } | |
| 1192 // Returns false if target is not loaded | |
| 1193 bool target_is_strictfp() const { return check_flag(TargetIsStrictfpFlag); } | |
| 1194 | |
| 1295 | 1195 // JSR 292 support |
| 1196 bool is_invokedynamic() const { return code() == Bytecodes::_invokedynamic; } | |
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1197 bool is_method_handle_intrinsic() const { return target()->is_method_handle_intrinsic(); } |
| 1295 | 1198 |
| 1819 | 1199 virtual bool needs_exception_state() const { return false; } |
| 1200 | |
| 0 | 1201 // generic |
| 1202 virtual bool can_trap() const { return true; } | |
| 1584 | 1203 virtual void input_values_do(ValueVisitor* f) { |
| 0 | 1204 StateSplit::input_values_do(f); |
| 1584 | 1205 if (has_receiver()) f->visit(&_recv); |
| 1206 for (int i = 0; i < _args->length(); i++) f->visit(_args->adr_at(i)); | |
| 0 | 1207 } |
| 1584 | 1208 virtual void state_values_do(ValueVisitor *f); |
| 0 | 1209 }; |
| 1210 | |
| 1211 | |
| 1212 LEAF(NewInstance, StateSplit) | |
| 1213 private: | |
| 1214 ciInstanceKlass* _klass; | |
| 1215 | |
| 1216 public: | |
| 1217 // creation | |
| 1819 | 1218 NewInstance(ciInstanceKlass* klass, ValueStack* state_before) |
| 1219 : StateSplit(instanceType, state_before) | |
| 1220 , _klass(klass) | |
| 1221 {} | |
| 0 | 1222 |
| 1223 // accessors | |
| 1224 ciInstanceKlass* klass() const { return _klass; } | |
| 1225 | |
| 1819 | 1226 virtual bool needs_exception_state() const { return false; } |
| 1227 | |
| 0 | 1228 // generic |
| 1229 virtual bool can_trap() const { return true; } | |
| 1230 ciType* exact_type() const; | |
| 2446 | 1231 ciType* declared_type() const; |
| 0 | 1232 }; |
| 1233 | |
| 1234 | |
| 1235 BASE(NewArray, StateSplit) | |
| 1236 private: | |
| 1237 Value _length; | |
| 1238 | |
| 1239 public: | |
| 1240 // creation | |
| 1819 | 1241 NewArray(Value length, ValueStack* state_before) |
| 1242 : StateSplit(objectType, state_before) | |
| 1243 , _length(length) | |
| 1244 { | |
| 0 | 1245 // Do not ASSERT_VALUES since length is NULL for NewMultiArray |
| 1246 } | |
| 1247 | |
| 1248 // accessors | |
| 1249 Value length() const { return _length; } | |
| 1250 | |
| 1819 | 1251 virtual bool needs_exception_state() const { return false; } |
| 1252 | |
| 2446 | 1253 ciType* declared_type() const; |
| 1254 | |
| 0 | 1255 // generic |
| 1256 virtual bool can_trap() const { return true; } | |
| 1584 | 1257 virtual void input_values_do(ValueVisitor* f) { StateSplit::input_values_do(f); f->visit(&_length); } |
| 0 | 1258 }; |
| 1259 | |
| 1260 | |
| 1261 LEAF(NewTypeArray, NewArray) | |
| 1262 private: | |
| 1263 BasicType _elt_type; | |
| 1264 | |
| 1265 public: | |
| 1266 // creation | |
| 1819 | 1267 NewTypeArray(Value length, BasicType elt_type, ValueStack* state_before) |
| 1268 : NewArray(length, state_before) | |
| 1269 , _elt_type(elt_type) | |
| 1270 {} | |
| 0 | 1271 |
| 1272 // accessors | |
| 1273 BasicType elt_type() const { return _elt_type; } | |
| 1274 ciType* exact_type() const; | |
| 1275 }; | |
| 1276 | |
| 1277 | |
| 1278 LEAF(NewObjectArray, NewArray) | |
| 1279 private: | |
| 1280 ciKlass* _klass; | |
| 1281 | |
| 1282 public: | |
| 1283 // creation | |
| 1284 NewObjectArray(ciKlass* klass, Value length, ValueStack* state_before) : NewArray(length, state_before), _klass(klass) {} | |
| 1285 | |
| 1286 // accessors | |
| 1287 ciKlass* klass() const { return _klass; } | |
| 1288 ciType* exact_type() const; | |
| 1289 }; | |
| 1290 | |
| 1291 | |
| 1292 LEAF(NewMultiArray, NewArray) | |
| 1293 private: | |
| 1294 ciKlass* _klass; | |
| 1295 Values* _dims; | |
| 1296 | |
| 1297 public: | |
| 1298 // creation | |
| 1299 NewMultiArray(ciKlass* klass, Values* dims, ValueStack* state_before) : NewArray(NULL, state_before), _klass(klass), _dims(dims) { | |
| 1300 ASSERT_VALUES | |
| 1301 } | |
| 1302 | |
| 1303 // accessors | |
| 1304 ciKlass* klass() const { return _klass; } | |
| 1305 Values* dims() const { return _dims; } | |
| 1306 int rank() const { return dims()->length(); } | |
| 1307 | |
| 1308 // generic | |
| 1584 | 1309 virtual void input_values_do(ValueVisitor* f) { |
| 0 | 1310 // NOTE: we do not call NewArray::input_values_do since "length" |
| 1311 // is meaningless for a multi-dimensional array; passing the | |
| 1312 // zeroth element down to NewArray as its length is a bad idea | |
| 1313 // since there will be a copy in the "dims" array which doesn't | |
| 1314 // get updated, and the value must not be traversed twice. Was bug | |
| 1315 // - kbr 4/10/2001 | |
| 1316 StateSplit::input_values_do(f); | |
| 1584 | 1317 for (int i = 0; i < _dims->length(); i++) f->visit(_dims->adr_at(i)); |
| 0 | 1318 } |
| 1319 }; | |
| 1320 | |
| 1321 | |
| 1322 BASE(TypeCheck, StateSplit) | |
| 1323 private: | |
| 1324 ciKlass* _klass; | |
| 1325 Value _obj; | |
| 1326 | |
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1327 ciMethod* _profiled_method; |
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1328 int _profiled_bci; |
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1329 |
| 0 | 1330 public: |
| 1331 // creation | |
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1332 TypeCheck(ciKlass* klass, Value obj, ValueType* type, ValueStack* state_before) |
| 1819 | 1333 : StateSplit(type, state_before), _klass(klass), _obj(obj), |
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1334 _profiled_method(NULL), _profiled_bci(0) { |
| 0 | 1335 ASSERT_VALUES |
| 1336 set_direct_compare(false); | |
| 1337 } | |
| 1338 | |
| 1339 // accessors | |
| 1340 ciKlass* klass() const { return _klass; } | |
| 1341 Value obj() const { return _obj; } | |
| 1342 bool is_loaded() const { return klass() != NULL; } | |
| 1343 bool direct_compare() const { return check_flag(DirectCompareFlag); } | |
| 1344 | |
| 1345 // manipulation | |
| 1346 void set_direct_compare(bool flag) { set_flag(DirectCompareFlag, flag); } | |
| 1347 | |
| 1348 // generic | |
| 1349 virtual bool can_trap() const { return true; } | |
| 1584 | 1350 virtual void input_values_do(ValueVisitor* f) { StateSplit::input_values_do(f); f->visit(&_obj); } |
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1351 |
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1352 // Helpers for MethodData* profiling |
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1353 void set_should_profile(bool value) { set_flag(ProfileMDOFlag, value); } |
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1354 void set_profiled_method(ciMethod* method) { _profiled_method = method; } |
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1355 void set_profiled_bci(int bci) { _profiled_bci = bci; } |
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1356 bool should_profile() const { return check_flag(ProfileMDOFlag); } |
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1357 ciMethod* profiled_method() const { return _profiled_method; } |
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1358 int profiled_bci() const { return _profiled_bci; } |
| 0 | 1359 }; |
| 1360 | |
| 1361 | |
| 1362 LEAF(CheckCast, TypeCheck) | |
| 1363 public: | |
| 1364 // creation | |
| 1365 CheckCast(ciKlass* klass, Value obj, ValueStack* state_before) | |
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1366 : TypeCheck(klass, obj, objectType, state_before) {} |
| 0 | 1367 |
| 1368 void set_incompatible_class_change_check() { | |
| 1369 set_flag(ThrowIncompatibleClassChangeErrorFlag, true); | |
| 1370 } | |
| 1371 bool is_incompatible_class_change_check() const { | |
| 1372 return check_flag(ThrowIncompatibleClassChangeErrorFlag); | |
| 1373 } | |
| 1374 | |
| 1375 ciType* declared_type() const; | |
| 1376 ciType* exact_type() const; | |
| 1377 }; | |
| 1378 | |
| 1379 | |
| 1380 LEAF(InstanceOf, TypeCheck) | |
| 1381 public: | |
| 1382 // creation | |
| 1383 InstanceOf(ciKlass* klass, Value obj, ValueStack* state_before) : TypeCheck(klass, obj, intType, state_before) {} | |
| 1819 | 1384 |
| 1385 virtual bool needs_exception_state() const { return false; } | |
| 0 | 1386 }; |
| 1387 | |
| 1388 | |
| 1389 BASE(AccessMonitor, StateSplit) | |
| 1390 private: | |
| 1391 Value _obj; | |
| 1392 int _monitor_no; | |
| 1393 | |
| 1394 public: | |
| 1395 // creation | |
| 1819 | 1396 AccessMonitor(Value obj, int monitor_no, ValueStack* state_before = NULL) |
| 1397 : StateSplit(illegalType, state_before) | |
| 0 | 1398 , _obj(obj) |
| 1399 , _monitor_no(monitor_no) | |
| 1400 { | |
| 1401 set_needs_null_check(true); | |
| 1402 ASSERT_VALUES | |
| 1403 } | |
| 1404 | |
| 1405 // accessors | |
| 1406 Value obj() const { return _obj; } | |
| 1407 int monitor_no() const { return _monitor_no; } | |
| 1408 | |
| 1409 // generic | |
| 1584 | 1410 virtual void input_values_do(ValueVisitor* f) { StateSplit::input_values_do(f); f->visit(&_obj); } |
| 0 | 1411 }; |
| 1412 | |
| 1413 | |
| 1414 LEAF(MonitorEnter, AccessMonitor) | |
| 1415 public: | |
| 1416 // creation | |
| 1819 | 1417 MonitorEnter(Value obj, int monitor_no, ValueStack* state_before) |
| 1418 : AccessMonitor(obj, monitor_no, state_before) | |
| 0 | 1419 { |
| 1420 ASSERT_VALUES | |
| 1421 } | |
| 1422 | |
| 1423 // generic | |
| 1424 virtual bool can_trap() const { return true; } | |
| 1425 }; | |
| 1426 | |
| 1427 | |
| 1428 LEAF(MonitorExit, AccessMonitor) | |
| 1429 public: | |
| 1430 // creation | |
| 1819 | 1431 MonitorExit(Value obj, int monitor_no) |
| 1432 : AccessMonitor(obj, monitor_no, NULL) | |
| 1433 { | |
| 1434 ASSERT_VALUES | |
| 1435 } | |
| 0 | 1436 }; |
| 1437 | |
| 1438 | |
| 1439 LEAF(Intrinsic, StateSplit) | |
| 1440 private: | |
| 1441 vmIntrinsics::ID _id; | |
| 1442 Values* _args; | |
| 1443 Value _recv; | |
| 2446 | 1444 int _nonnull_state; // mask identifying which args are nonnull |
| 0 | 1445 |
| 1446 public: | |
| 1447 // preserves_state can be set to true for Intrinsics | |
| 1448 // which are guaranteed to preserve register state across any slow | |
| 1449 // cases; setting it to true does not mean that the Intrinsic can | |
| 1450 // not trap, only that if we continue execution in the same basic | |
| 1451 // block after the Intrinsic, all of the registers are intact. This | |
| 1452 // allows load elimination and common expression elimination to be | |
| 1453 // performed across the Intrinsic. The default value is false. | |
| 1454 Intrinsic(ValueType* type, | |
| 1455 vmIntrinsics::ID id, | |
| 1456 Values* args, | |
| 1457 bool has_receiver, | |
| 1819 | 1458 ValueStack* state_before, |
| 0 | 1459 bool preserves_state, |
| 1460 bool cantrap = true) | |
| 1819 | 1461 : StateSplit(type, state_before) |
| 0 | 1462 , _id(id) |
| 1463 , _args(args) | |
| 1464 , _recv(NULL) | |
| 2446 | 1465 , _nonnull_state(AllBits) |
| 0 | 1466 { |
| 1467 assert(args != NULL, "args must exist"); | |
| 1468 ASSERT_VALUES | |
| 1469 set_flag(PreservesStateFlag, preserves_state); | |
| 1470 set_flag(CanTrapFlag, cantrap); | |
| 1471 if (has_receiver) { | |
| 1472 _recv = argument_at(0); | |
| 1473 } | |
| 1474 set_needs_null_check(has_receiver); | |
| 1475 | |
| 1476 // some intrinsics can't trap, so don't force them to be pinned | |
| 1477 if (!can_trap()) { | |
| 1478 unpin(PinStateSplitConstructor); | |
| 1479 } | |
| 1480 } | |
| 1481 | |
| 1482 // accessors | |
| 1483 vmIntrinsics::ID id() const { return _id; } | |
| 1484 int number_of_arguments() const { return _args->length(); } | |
| 1485 Value argument_at(int i) const { return _args->at(i); } | |
| 1486 | |
| 1487 bool has_receiver() const { return (_recv != NULL); } | |
| 1488 Value receiver() const { assert(has_receiver(), "must have receiver"); return _recv; } | |
| 1489 bool preserves_state() const { return check_flag(PreservesStateFlag); } | |
| 1490 | |
| 2446 | 1491 bool arg_needs_null_check(int i) { |
| 1492 if (i >= 0 && i < (int)sizeof(_nonnull_state) * BitsPerByte) { | |
| 1493 return is_set_nth_bit(_nonnull_state, i); | |
| 1494 } | |
| 1495 return true; | |
| 1496 } | |
| 1497 | |
| 1498 void set_arg_needs_null_check(int i, bool check) { | |
| 1499 if (i >= 0 && i < (int)sizeof(_nonnull_state) * BitsPerByte) { | |
| 1500 if (check) { | |
| 1501 _nonnull_state |= nth_bit(i); | |
| 1502 } else { | |
| 1503 _nonnull_state &= ~(nth_bit(i)); | |
| 1504 } | |
| 1505 } | |
| 1506 } | |
| 1507 | |
| 0 | 1508 // generic |
| 1509 virtual bool can_trap() const { return check_flag(CanTrapFlag); } | |
| 1584 | 1510 virtual void input_values_do(ValueVisitor* f) { |
| 0 | 1511 StateSplit::input_values_do(f); |
| 1584 | 1512 for (int i = 0; i < _args->length(); i++) f->visit(_args->adr_at(i)); |
| 0 | 1513 } |
| 1514 }; | |
| 1515 | |
| 1516 | |
| 1517 class LIR_List; | |
| 1518 | |
| 1519 LEAF(BlockBegin, StateSplit) | |
| 1520 private: | |
| 1521 int _block_id; // the unique block id | |
| 1819 | 1522 int _bci; // start-bci of block |
| 0 | 1523 int _depth_first_number; // number of this block in a depth-first ordering |
| 1524 int _linear_scan_number; // number of this block in linear-scan ordering | |
| 1525 int _loop_depth; // the loop nesting level of this block | |
| 1526 int _loop_index; // number of the innermost loop of this block | |
| 1527 int _flags; // the flags associated with this block | |
| 1528 | |
| 1529 // fields used by BlockListBuilder | |
| 1530 int _total_preds; // number of predecessors found by BlockListBuilder | |
| 1531 BitMap _stores_to_locals; // bit is set when a local variable is stored in the block | |
| 1532 | |
| 1533 // SSA specific fields: (factor out later) | |
| 1534 BlockList _successors; // the successors of this block | |
| 1535 BlockList _predecessors; // the predecessors of this block | |
| 1536 BlockBegin* _dominator; // the dominator of this block | |
| 1537 // SSA specific ends | |
| 1538 BlockEnd* _end; // the last instruction of this block | |
| 1539 BlockList _exception_handlers; // the exception handlers potentially invoked by this block | |
| 1540 ValueStackStack* _exception_states; // only for xhandler entries: states of all instructions that have an edge to this xhandler | |
| 1541 int _exception_handler_pco; // if this block is the start of an exception handler, | |
| 1542 // this records the PC offset in the assembly code of the | |
| 1543 // first instruction in this block | |
| 1544 Label _label; // the label associated with this block | |
| 1545 LIR_List* _lir; // the low level intermediate representation for this block | |
| 1546 | |
| 1547 BitMap _live_in; // set of live LIR_Opr registers at entry to this block | |
| 1548 BitMap _live_out; // set of live LIR_Opr registers at exit from this block | |
| 1549 BitMap _live_gen; // set of registers used before any redefinition in this block | |
| 1550 BitMap _live_kill; // set of registers defined in this block | |
| 1551 | |
| 1552 BitMap _fpu_register_usage; | |
| 1553 intArray* _fpu_stack_state; // For x86 FPU code generation with UseLinearScan | |
| 1554 int _first_lir_instruction_id; // ID of first LIR instruction in this block | |
| 1555 int _last_lir_instruction_id; // ID of last LIR instruction in this block | |
| 1556 | |
| 1557 void iterate_preorder (boolArray& mark, BlockClosure* closure); | |
| 1558 void iterate_postorder(boolArray& mark, BlockClosure* closure); | |
| 1559 | |
| 1560 friend class SuxAndWeightAdjuster; | |
| 1561 | |
| 1562 public: | |
| 1584 | 1563 void* operator new(size_t size) { |
| 1564 Compilation* c = Compilation::current(); | |
| 1565 void* res = c->arena()->Amalloc(size); | |
| 1566 ((BlockBegin*)res)->_id = c->get_next_id(); | |
| 1567 ((BlockBegin*)res)->_block_id = c->get_next_block_id(); | |
| 1568 return res; | |
| 1569 } | |
| 1570 | |
| 0 | 1571 // initialization/counting |
| 1584 | 1572 static int number_of_blocks() { |
| 1573 return Compilation::current()->number_of_blocks(); | |
| 1574 } | |
| 0 | 1575 |
| 1576 // creation | |
| 1577 BlockBegin(int bci) | |
| 1578 : StateSplit(illegalType) | |
| 1819 | 1579 , _bci(bci) |
| 0 | 1580 , _depth_first_number(-1) |
| 1581 , _linear_scan_number(-1) | |
| 1582 , _loop_depth(0) | |
| 1583 , _flags(0) | |
| 1584 , _dominator(NULL) | |
| 1585 , _end(NULL) | |
| 1586 , _predecessors(2) | |
| 1587 , _successors(2) | |
| 1588 , _exception_handlers(1) | |
| 1589 , _exception_states(NULL) | |
| 1590 , _exception_handler_pco(-1) | |
| 1591 , _lir(NULL) | |
| 1592 , _loop_index(-1) | |
| 1593 , _live_in() | |
| 1594 , _live_out() | |
| 1595 , _live_gen() | |
| 1596 , _live_kill() | |
| 1597 , _fpu_register_usage() | |
| 1598 , _fpu_stack_state(NULL) | |
| 1599 , _first_lir_instruction_id(-1) | |
| 1600 , _last_lir_instruction_id(-1) | |
| 1601 , _total_preds(0) | |
| 1602 , _stores_to_locals() | |
| 1603 { | |
| 1819 | 1604 #ifndef PRODUCT |
| 1605 set_printable_bci(bci); | |
| 1606 #endif | |
| 0 | 1607 } |
| 1608 | |
| 1609 // accessors | |
| 1610 int block_id() const { return _block_id; } | |
| 1819 | 1611 int bci() const { return _bci; } |
| 0 | 1612 BlockList* successors() { return &_successors; } |
| 1613 BlockBegin* dominator() const { return _dominator; } | |
| 1614 int loop_depth() const { return _loop_depth; } | |
| 1615 int depth_first_number() const { return _depth_first_number; } | |
| 1616 int linear_scan_number() const { return _linear_scan_number; } | |
| 1617 BlockEnd* end() const { return _end; } | |
| 1618 Label* label() { return &_label; } | |
| 1619 LIR_List* lir() const { return _lir; } | |
| 1620 int exception_handler_pco() const { return _exception_handler_pco; } | |
| 1621 BitMap& live_in() { return _live_in; } | |
| 1622 BitMap& live_out() { return _live_out; } | |
| 1623 BitMap& live_gen() { return _live_gen; } | |
| 1624 BitMap& live_kill() { return _live_kill; } | |
| 1625 BitMap& fpu_register_usage() { return _fpu_register_usage; } | |
| 1626 intArray* fpu_stack_state() const { return _fpu_stack_state; } | |
| 1627 int first_lir_instruction_id() const { return _first_lir_instruction_id; } | |
| 1628 int last_lir_instruction_id() const { return _last_lir_instruction_id; } | |
| 1629 int total_preds() const { return _total_preds; } | |
| 1630 BitMap& stores_to_locals() { return _stores_to_locals; } | |
| 1631 | |
| 1632 // manipulation | |
| 1633 void set_dominator(BlockBegin* dom) { _dominator = dom; } | |
| 1634 void set_loop_depth(int d) { _loop_depth = d; } | |
| 1635 void set_depth_first_number(int dfn) { _depth_first_number = dfn; } | |
| 1636 void set_linear_scan_number(int lsn) { _linear_scan_number = lsn; } | |
| 1637 void set_end(BlockEnd* end); | |
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1638 void clear_end(); |
| 0 | 1639 void disconnect_from_graph(); |
| 1640 static void disconnect_edge(BlockBegin* from, BlockBegin* to); | |
| 1641 BlockBegin* insert_block_between(BlockBegin* sux); | |
| 1642 void substitute_sux(BlockBegin* old_sux, BlockBegin* new_sux); | |
| 1643 void set_lir(LIR_List* lir) { _lir = lir; } | |
| 1644 void set_exception_handler_pco(int pco) { _exception_handler_pco = pco; } | |
| 1645 void set_live_in (BitMap map) { _live_in = map; } | |
| 1646 void set_live_out (BitMap map) { _live_out = map; } | |
| 1647 void set_live_gen (BitMap map) { _live_gen = map; } | |
| 1648 void set_live_kill (BitMap map) { _live_kill = map; } | |
| 1649 void set_fpu_register_usage(BitMap map) { _fpu_register_usage = map; } | |
| 1650 void set_fpu_stack_state(intArray* state) { _fpu_stack_state = state; } | |
| 1651 void set_first_lir_instruction_id(int id) { _first_lir_instruction_id = id; } | |
| 1652 void set_last_lir_instruction_id(int id) { _last_lir_instruction_id = id; } | |
| 1653 void increment_total_preds(int n = 1) { _total_preds += n; } | |
| 1654 void init_stores_to_locals(int locals_count) { _stores_to_locals = BitMap(locals_count); _stores_to_locals.clear(); } | |
| 1655 | |
| 1656 // generic | |
| 1584 | 1657 virtual void state_values_do(ValueVisitor* f); |
| 0 | 1658 |
| 1659 // successors and predecessors | |
| 1660 int number_of_sux() const; | |
| 1661 BlockBegin* sux_at(int i) const; | |
| 1662 void add_successor(BlockBegin* sux); | |
| 1663 void remove_successor(BlockBegin* pred); | |
| 1664 bool is_successor(BlockBegin* sux) const { return _successors.contains(sux); } | |
| 1665 | |
| 1666 void add_predecessor(BlockBegin* pred); | |
| 1667 void remove_predecessor(BlockBegin* pred); | |
| 1668 bool is_predecessor(BlockBegin* pred) const { return _predecessors.contains(pred); } | |
| 1669 int number_of_preds() const { return _predecessors.length(); } | |
| 1670 BlockBegin* pred_at(int i) const { return _predecessors[i]; } | |
| 1671 | |
| 1672 // exception handlers potentially invoked by this block | |
| 1673 void add_exception_handler(BlockBegin* b); | |
| 1674 bool is_exception_handler(BlockBegin* b) const { return _exception_handlers.contains(b); } | |
| 1675 int number_of_exception_handlers() const { return _exception_handlers.length(); } | |
| 1676 BlockBegin* exception_handler_at(int i) const { return _exception_handlers.at(i); } | |
| 1677 | |
| 1678 // states of the instructions that have an edge to this exception handler | |
| 1679 int number_of_exception_states() { assert(is_set(exception_entry_flag), "only for xhandlers"); return _exception_states == NULL ? 0 : _exception_states->length(); } | |
| 1680 ValueStack* exception_state_at(int idx) const { assert(is_set(exception_entry_flag), "only for xhandlers"); return _exception_states->at(idx); } | |
| 1681 int add_exception_state(ValueStack* state); | |
| 1682 | |
| 1683 // flags | |
| 1684 enum Flag { | |
| 1685 no_flag = 0, | |
| 1686 std_entry_flag = 1 << 0, | |
| 1687 osr_entry_flag = 1 << 1, | |
| 1688 exception_entry_flag = 1 << 2, | |
| 1689 subroutine_entry_flag = 1 << 3, | |
| 1690 backward_branch_target_flag = 1 << 4, | |
| 1691 is_on_work_list_flag = 1 << 5, | |
| 1692 was_visited_flag = 1 << 6, | |
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1693 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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1694 critical_edge_split_flag = 1 << 8, // set for all blocks that are introduced when critical edges are split |
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1695 linear_scan_loop_header_flag = 1 << 9, // set during loop-detection for LinearScan |
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1696 linear_scan_loop_end_flag = 1 << 10 // set during loop-detection for LinearScan |
| 0 | 1697 }; |
| 1698 | |
| 1699 void set(Flag f) { _flags |= f; } | |
| 1700 void clear(Flag f) { _flags &= ~f; } | |
| 1701 bool is_set(Flag f) const { return (_flags & f) != 0; } | |
| 1702 bool is_entry_block() const { | |
| 1703 const int entry_mask = std_entry_flag | osr_entry_flag | exception_entry_flag; | |
| 1704 return (_flags & entry_mask) != 0; | |
| 1705 } | |
| 1706 | |
| 1707 // iteration | |
| 1708 void iterate_preorder (BlockClosure* closure); | |
| 1709 void iterate_postorder (BlockClosure* closure); | |
| 1710 | |
| 1584 | 1711 void block_values_do(ValueVisitor* f); |
| 0 | 1712 |
| 1713 // loops | |
| 1714 void set_loop_index(int ix) { _loop_index = ix; } | |
| 1715 int loop_index() const { return _loop_index; } | |
| 1716 | |
| 1717 // merging | |
| 1718 bool try_merge(ValueStack* state); // try to merge states at block begin | |
| 1719 void merge(ValueStack* state) { bool b = try_merge(state); assert(b, "merge failed"); } | |
| 1720 | |
| 1721 // debugging | |
| 1722 void print_block() PRODUCT_RETURN; | |
| 1723 void print_block(InstructionPrinter& ip, bool live_only = false) PRODUCT_RETURN; | |
| 1724 }; | |
| 1725 | |
| 1726 | |
| 1727 BASE(BlockEnd, StateSplit) | |
| 1728 private: | |
| 1729 BlockBegin* _begin; | |
| 1730 BlockList* _sux; | |
| 1731 | |
| 1732 protected: | |
| 1733 BlockList* sux() const { return _sux; } | |
| 1734 | |
| 1735 void set_sux(BlockList* sux) { | |
| 1736 #ifdef ASSERT | |
| 1737 assert(sux != NULL, "sux must exist"); | |
| 1738 for (int i = sux->length() - 1; i >= 0; i--) assert(sux->at(i) != NULL, "sux must exist"); | |
| 1739 #endif | |
| 1740 _sux = sux; | |
| 1741 } | |
| 1742 | |
| 1743 public: | |
| 1744 // creation | |
| 1745 BlockEnd(ValueType* type, ValueStack* state_before, bool is_safepoint) | |
| 1819 | 1746 : StateSplit(type, state_before) |
| 0 | 1747 , _begin(NULL) |
| 1748 , _sux(NULL) | |
| 1819 | 1749 { |
| 0 | 1750 set_flag(IsSafepointFlag, is_safepoint); |
| 1751 } | |
| 1752 | |
| 1753 // accessors | |
| 1754 bool is_safepoint() const { return check_flag(IsSafepointFlag); } | |
| 1755 BlockBegin* begin() const { return _begin; } | |
| 1756 | |
| 1757 // manipulation | |
| 1758 void set_begin(BlockBegin* begin); | |
| 1759 | |
| 1760 // successors | |
| 1761 int number_of_sux() const { return _sux != NULL ? _sux->length() : 0; } | |
| 1762 BlockBegin* sux_at(int i) const { return _sux->at(i); } | |
| 1763 BlockBegin* default_sux() const { return sux_at(number_of_sux() - 1); } | |
| 1764 BlockBegin** addr_sux_at(int i) const { return _sux->adr_at(i); } | |
| 1765 int sux_index(BlockBegin* sux) const { return _sux->find(sux); } | |
| 1766 void substitute_sux(BlockBegin* old_sux, BlockBegin* new_sux); | |
| 1767 }; | |
| 1768 | |
| 1769 | |
| 1770 LEAF(Goto, BlockEnd) | |
| 1771 public: | |
| 1783 | 1772 enum Direction { |
| 1773 none, // Just a regular goto | |
| 1774 taken, not_taken // Goto produced from If | |
| 1775 }; | |
| 1776 private: | |
| 1777 ciMethod* _profiled_method; | |
| 1778 int _profiled_bci; | |
| 1779 Direction _direction; | |
| 1780 public: | |
| 0 | 1781 // creation |
| 1783 | 1782 Goto(BlockBegin* sux, ValueStack* state_before, bool is_safepoint = false) |
| 1783 : BlockEnd(illegalType, state_before, is_safepoint) | |
| 1784 , _direction(none) | |
| 1785 , _profiled_method(NULL) | |
| 1786 , _profiled_bci(0) { | |
| 0 | 1787 BlockList* s = new BlockList(1); |
| 1788 s->append(sux); | |
| 1789 set_sux(s); | |
| 1790 } | |
| 1791 | |
| 1783 | 1792 Goto(BlockBegin* sux, bool is_safepoint) : BlockEnd(illegalType, NULL, is_safepoint) |
| 1793 , _direction(none) | |
| 1794 , _profiled_method(NULL) | |
| 1795 , _profiled_bci(0) { | |
| 0 | 1796 BlockList* s = new BlockList(1); |
| 1797 s->append(sux); | |
| 1798 set_sux(s); | |
| 1799 } | |
| 1800 | |
| 1783 | 1801 bool should_profile() const { return check_flag(ProfileMDOFlag); } |
| 1802 ciMethod* profiled_method() const { return _profiled_method; } // set only for profiled branches | |
| 1803 int profiled_bci() const { return _profiled_bci; } | |
| 1804 Direction direction() const { return _direction; } | |
| 1805 | |
| 1806 void set_should_profile(bool value) { set_flag(ProfileMDOFlag, value); } | |
| 1807 void set_profiled_method(ciMethod* method) { _profiled_method = method; } | |
| 1808 void set_profiled_bci(int bci) { _profiled_bci = bci; } | |
| 1809 void set_direction(Direction d) { _direction = d; } | |
| 0 | 1810 }; |
| 1811 | |
| 1812 | |
| 1813 LEAF(If, BlockEnd) | |
| 1814 private: | |
| 1815 Value _x; | |
| 1816 Condition _cond; | |
| 1817 Value _y; | |
| 1818 ciMethod* _profiled_method; | |
| 1819 int _profiled_bci; // Canonicalizer may alter bci of If node | |
| 1783 | 1820 bool _swapped; // Is the order reversed with respect to the original If in the |
| 1821 // bytecode stream? | |
| 0 | 1822 public: |
| 1823 // creation | |
| 1824 // unordered_is_true is valid for float/double compares only | |
| 1825 If(Value x, Condition cond, bool unordered_is_true, Value y, BlockBegin* tsux, BlockBegin* fsux, ValueStack* state_before, bool is_safepoint) | |
| 1826 : BlockEnd(illegalType, state_before, is_safepoint) | |
| 1827 , _x(x) | |
| 1828 , _cond(cond) | |
| 1829 , _y(y) | |
| 1830 , _profiled_method(NULL) | |
| 1831 , _profiled_bci(0) | |
| 1783 | 1832 , _swapped(false) |
| 0 | 1833 { |
| 1834 ASSERT_VALUES | |
| 1835 set_flag(UnorderedIsTrueFlag, unordered_is_true); | |
| 1836 assert(x->type()->tag() == y->type()->tag(), "types must match"); | |
| 1837 BlockList* s = new BlockList(2); | |
| 1838 s->append(tsux); | |
| 1839 s->append(fsux); | |
| 1840 set_sux(s); | |
| 1841 } | |
| 1842 | |
| 1843 // accessors | |
| 1844 Value x() const { return _x; } | |
| 1845 Condition cond() const { return _cond; } | |
| 1846 bool unordered_is_true() const { return check_flag(UnorderedIsTrueFlag); } | |
| 1847 Value y() const { return _y; } | |
| 1848 BlockBegin* sux_for(bool is_true) const { return sux_at(is_true ? 0 : 1); } | |
| 1849 BlockBegin* tsux() const { return sux_for(true); } | |
| 1850 BlockBegin* fsux() const { return sux_for(false); } | |
| 1851 BlockBegin* usux() const { return sux_for(unordered_is_true()); } | |
| 1852 bool should_profile() const { return check_flag(ProfileMDOFlag); } | |
| 1853 ciMethod* profiled_method() const { return _profiled_method; } // set only for profiled branches | |
| 1783 | 1854 int profiled_bci() const { return _profiled_bci; } // set for profiled branches and tiered |
| 1855 bool is_swapped() const { return _swapped; } | |
| 0 | 1856 |
| 1857 // manipulation | |
| 1858 void swap_operands() { | |
| 1859 Value t = _x; _x = _y; _y = t; | |
| 1860 _cond = mirror(_cond); | |
| 1861 } | |
| 1862 | |
| 1863 void swap_sux() { | |
| 1864 assert(number_of_sux() == 2, "wrong number of successors"); | |
| 1865 BlockList* s = sux(); | |
| 1866 BlockBegin* t = s->at(0); s->at_put(0, s->at(1)); s->at_put(1, t); | |
| 1867 _cond = negate(_cond); | |
| 1868 set_flag(UnorderedIsTrueFlag, !check_flag(UnorderedIsTrueFlag)); | |
| 1869 } | |
| 1870 | |
| 1871 void set_should_profile(bool value) { set_flag(ProfileMDOFlag, value); } | |
| 1872 void set_profiled_method(ciMethod* method) { _profiled_method = method; } | |
| 1873 void set_profiled_bci(int bci) { _profiled_bci = bci; } | |
| 1783 | 1874 void set_swapped(bool value) { _swapped = value; } |
| 0 | 1875 // generic |
| 1584 | 1876 virtual void input_values_do(ValueVisitor* f) { BlockEnd::input_values_do(f); f->visit(&_x); f->visit(&_y); } |
| 0 | 1877 }; |
| 1878 | |
| 1879 | |
| 1880 LEAF(IfInstanceOf, BlockEnd) | |
| 1881 private: | |
| 1882 ciKlass* _klass; | |
| 1883 Value _obj; | |
| 1884 bool _test_is_instance; // jump if instance | |
| 1885 int _instanceof_bci; | |
| 1886 | |
| 1887 public: | |
| 1888 IfInstanceOf(ciKlass* klass, Value obj, bool test_is_instance, int instanceof_bci, BlockBegin* tsux, BlockBegin* fsux) | |
| 1889 : BlockEnd(illegalType, NULL, false) // temporary set to false | |
| 1890 , _klass(klass) | |
| 1891 , _obj(obj) | |
| 1892 , _test_is_instance(test_is_instance) | |
| 1893 , _instanceof_bci(instanceof_bci) | |
| 1894 { | |
| 1895 ASSERT_VALUES | |
| 1896 assert(instanceof_bci >= 0, "illegal bci"); | |
| 1897 BlockList* s = new BlockList(2); | |
| 1898 s->append(tsux); | |
| 1899 s->append(fsux); | |
| 1900 set_sux(s); | |
| 1901 } | |
| 1902 | |
| 1903 // accessors | |
| 1904 // | |
| 1905 // Note 1: If test_is_instance() is true, IfInstanceOf tests if obj *is* an | |
| 1906 // instance of klass; otherwise it tests if it is *not* and instance | |
| 1907 // of klass. | |
| 1908 // | |
| 1909 // Note 2: IfInstanceOf instructions are created by combining an InstanceOf | |
| 1910 // and an If instruction. The IfInstanceOf bci() corresponds to the | |
| 1911 // bci that the If would have had; the (this->) instanceof_bci() is | |
| 1912 // the bci of the original InstanceOf instruction. | |
| 1913 ciKlass* klass() const { return _klass; } | |
| 1914 Value obj() const { return _obj; } | |
| 1915 int instanceof_bci() const { return _instanceof_bci; } | |
| 1916 bool test_is_instance() const { return _test_is_instance; } | |
| 1917 BlockBegin* sux_for(bool is_true) const { return sux_at(is_true ? 0 : 1); } | |
| 1918 BlockBegin* tsux() const { return sux_for(true); } | |
| 1919 BlockBegin* fsux() const { return sux_for(false); } | |
| 1920 | |
| 1921 // manipulation | |
| 1922 void swap_sux() { | |
| 1923 assert(number_of_sux() == 2, "wrong number of successors"); | |
| 1924 BlockList* s = sux(); | |
| 1925 BlockBegin* t = s->at(0); s->at_put(0, s->at(1)); s->at_put(1, t); | |
| 1926 _test_is_instance = !_test_is_instance; | |
| 1927 } | |
| 1928 | |
| 1929 // generic | |
| 1584 | 1930 virtual void input_values_do(ValueVisitor* f) { BlockEnd::input_values_do(f); f->visit(&_obj); } |
| 0 | 1931 }; |
| 1932 | |
| 1933 | |
| 1934 BASE(Switch, BlockEnd) | |
| 1935 private: | |
| 1936 Value _tag; | |
| 1937 | |
| 1938 public: | |
| 1939 // creation | |
| 1940 Switch(Value tag, BlockList* sux, ValueStack* state_before, bool is_safepoint) | |
| 1941 : BlockEnd(illegalType, state_before, is_safepoint) | |
| 1942 , _tag(tag) { | |
| 1943 ASSERT_VALUES | |
| 1944 set_sux(sux); | |
| 1945 } | |
| 1946 | |
| 1947 // accessors | |
| 1948 Value tag() const { return _tag; } | |
| 1949 int length() const { return number_of_sux() - 1; } | |
| 1950 | |
| 1819 | 1951 virtual bool needs_exception_state() const { return false; } |
| 1952 | |
| 0 | 1953 // generic |
| 1584 | 1954 virtual void input_values_do(ValueVisitor* f) { BlockEnd::input_values_do(f); f->visit(&_tag); } |
| 0 | 1955 }; |
| 1956 | |
| 1957 | |
| 1958 LEAF(TableSwitch, Switch) | |
| 1959 private: | |
| 1960 int _lo_key; | |
| 1961 | |
| 1962 public: | |
| 1963 // creation | |
| 1964 TableSwitch(Value tag, BlockList* sux, int lo_key, ValueStack* state_before, bool is_safepoint) | |
| 1965 : Switch(tag, sux, state_before, is_safepoint) | |
| 1966 , _lo_key(lo_key) {} | |
| 1967 | |
| 1968 // accessors | |
| 1969 int lo_key() const { return _lo_key; } | |
| 1970 int hi_key() const { return _lo_key + length() - 1; } | |
| 1971 }; | |
| 1972 | |
| 1973 | |
| 1974 LEAF(LookupSwitch, Switch) | |
| 1975 private: | |
| 1976 intArray* _keys; | |
| 1977 | |
| 1978 public: | |
| 1979 // creation | |
| 1980 LookupSwitch(Value tag, BlockList* sux, intArray* keys, ValueStack* state_before, bool is_safepoint) | |
| 1981 : Switch(tag, sux, state_before, is_safepoint) | |
| 1982 , _keys(keys) { | |
| 1983 assert(keys != NULL, "keys must exist"); | |
| 1984 assert(keys->length() == length(), "sux & keys have incompatible lengths"); | |
| 1985 } | |
| 1986 | |
| 1987 // accessors | |
| 1988 int key_at(int i) const { return _keys->at(i); } | |
| 1989 }; | |
| 1990 | |
| 1991 | |
| 1992 LEAF(Return, BlockEnd) | |
| 1993 private: | |
| 1994 Value _result; | |
| 1995 | |
| 1996 public: | |
| 1997 // creation | |
| 1998 Return(Value result) : | |
| 1999 BlockEnd(result == NULL ? voidType : result->type()->base(), NULL, true), | |
| 2000 _result(result) {} | |
| 2001 | |
| 2002 // accessors | |
| 2003 Value result() const { return _result; } | |
| 2004 bool has_result() const { return result() != NULL; } | |
| 2005 | |
| 2006 // generic | |
| 1584 | 2007 virtual void input_values_do(ValueVisitor* f) { |
| 0 | 2008 BlockEnd::input_values_do(f); |
| 1584 | 2009 if (has_result()) f->visit(&_result); |
| 0 | 2010 } |
| 2011 }; | |
| 2012 | |
| 2013 | |
| 2014 LEAF(Throw, BlockEnd) | |
| 2015 private: | |
| 2016 Value _exception; | |
| 2017 | |
| 2018 public: | |
| 2019 // creation | |
| 2020 Throw(Value exception, ValueStack* state_before) : BlockEnd(illegalType, state_before, true), _exception(exception) { | |
| 2021 ASSERT_VALUES | |
| 2022 } | |
| 2023 | |
| 2024 // accessors | |
| 2025 Value exception() const { return _exception; } | |
| 2026 | |
| 2027 // generic | |
| 2028 virtual bool can_trap() const { return true; } | |
| 1584 | 2029 virtual void input_values_do(ValueVisitor* f) { BlockEnd::input_values_do(f); f->visit(&_exception); } |
| 0 | 2030 }; |
| 2031 | |
| 2032 | |
| 2033 LEAF(Base, BlockEnd) | |
| 2034 public: | |
| 2035 // creation | |
| 2036 Base(BlockBegin* std_entry, BlockBegin* osr_entry) : BlockEnd(illegalType, NULL, false) { | |
| 2037 assert(std_entry->is_set(BlockBegin::std_entry_flag), "std entry must be flagged"); | |
| 2038 assert(osr_entry == NULL || osr_entry->is_set(BlockBegin::osr_entry_flag), "osr entry must be flagged"); | |
| 2039 BlockList* s = new BlockList(2); | |
| 2040 if (osr_entry != NULL) s->append(osr_entry); | |
| 2041 s->append(std_entry); // must be default sux! | |
| 2042 set_sux(s); | |
| 2043 } | |
| 2044 | |
| 2045 // accessors | |
| 2046 BlockBegin* std_entry() const { return default_sux(); } | |
| 2047 BlockBegin* osr_entry() const { return number_of_sux() < 2 ? NULL : sux_at(0); } | |
| 2048 }; | |
| 2049 | |
| 2050 | |
| 2051 LEAF(OsrEntry, Instruction) | |
| 2052 public: | |
| 2053 // creation | |
| 2054 #ifdef _LP64 | |
| 1824 | 2055 OsrEntry() : Instruction(longType) { pin(); } |
| 0 | 2056 #else |
| 1824 | 2057 OsrEntry() : Instruction(intType) { pin(); } |
| 0 | 2058 #endif |
| 2059 | |
| 2060 // generic | |
| 1584 | 2061 virtual void input_values_do(ValueVisitor* f) { } |
| 0 | 2062 }; |
| 2063 | |
| 2064 | |
| 2065 // Models the incoming exception at a catch site | |
| 2066 LEAF(ExceptionObject, Instruction) | |
| 2067 public: | |
| 2068 // creation | |
| 1824 | 2069 ExceptionObject() : Instruction(objectType) { |
| 0 | 2070 pin(); |
| 2071 } | |
| 2072 | |
| 2073 // generic | |
| 1584 | 2074 virtual void input_values_do(ValueVisitor* f) { } |
| 0 | 2075 }; |
| 2076 | |
| 2077 | |
| 2078 // Models needed rounding for floating-point values on Intel. | |
| 2079 // Currently only used to represent rounding of double-precision | |
| 2080 // values stored into local variables, but could be used to model | |
| 2081 // intermediate rounding of single-precision values as well. | |
| 2082 LEAF(RoundFP, Instruction) | |
| 2083 private: | |
| 2084 Value _input; // floating-point value to be rounded | |
| 2085 | |
| 2086 public: | |
| 2087 RoundFP(Value input) | |
| 2088 : Instruction(input->type()) // Note: should not be used for constants | |
| 2089 , _input(input) | |
| 2090 { | |
| 2091 ASSERT_VALUES | |
| 2092 } | |
| 2093 | |
| 2094 // accessors | |
| 2095 Value input() const { return _input; } | |
| 2096 | |
| 2097 // generic | |
| 1584 | 2098 virtual void input_values_do(ValueVisitor* f) { f->visit(&_input); } |
| 0 | 2099 }; |
| 2100 | |
| 2101 | |
| 2102 BASE(UnsafeOp, Instruction) | |
| 2103 private: | |
| 2104 BasicType _basic_type; // ValueType can not express byte-sized integers | |
| 2105 | |
| 2106 protected: | |
| 2107 // creation | |
| 2108 UnsafeOp(BasicType basic_type, bool is_put) | |
| 2109 : Instruction(is_put ? voidType : as_ValueType(basic_type)) | |
| 2110 , _basic_type(basic_type) | |
| 2111 { | |
| 2112 //Note: Unsafe ops are not not guaranteed to throw NPE. | |
| 2113 // Convservatively, Unsafe operations must be pinned though we could be | |
| 2114 // looser about this if we wanted to.. | |
| 2115 pin(); | |
| 2116 } | |
| 2117 | |
| 2118 public: | |
| 2119 // accessors | |
| 2120 BasicType basic_type() { return _basic_type; } | |
| 2121 | |
| 2122 // generic | |
| 1584 | 2123 virtual void input_values_do(ValueVisitor* f) { } |
| 0 | 2124 }; |
| 2125 | |
| 2126 | |
| 2127 BASE(UnsafeRawOp, UnsafeOp) | |
| 2128 private: | |
| 2129 Value _base; // Base address (a Java long) | |
| 2130 Value _index; // Index if computed by optimizer; initialized to NULL | |
| 2131 int _log2_scale; // Scale factor: 0, 1, 2, or 3. | |
| 2132 // Indicates log2 of number of bytes (1, 2, 4, or 8) | |
| 2133 // to scale index by. | |
| 2134 | |
| 2135 protected: | |
| 2136 UnsafeRawOp(BasicType basic_type, Value addr, bool is_put) | |
| 2137 : UnsafeOp(basic_type, is_put) | |
| 2138 , _base(addr) | |
| 2139 , _index(NULL) | |
| 2140 , _log2_scale(0) | |
| 2141 { | |
| 2142 // Can not use ASSERT_VALUES because index may be NULL | |
| 2143 assert(addr != NULL && addr->type()->is_long(), "just checking"); | |
| 2144 } | |
| 2145 | |
| 2146 UnsafeRawOp(BasicType basic_type, Value base, Value index, int log2_scale, bool is_put) | |
| 2147 : UnsafeOp(basic_type, is_put) | |
| 2148 , _base(base) | |
| 2149 , _index(index) | |
| 2150 , _log2_scale(log2_scale) | |
| 2151 { | |
| 2152 } | |
| 2153 | |
| 2154 public: | |
| 2155 // accessors | |
| 2156 Value base() { return _base; } | |
| 2157 Value index() { return _index; } | |
| 2158 bool has_index() { return (_index != NULL); } | |
| 2159 int log2_scale() { return _log2_scale; } | |
| 2160 | |
| 2161 // setters | |
| 2162 void set_base (Value base) { _base = base; } | |
| 2163 void set_index(Value index) { _index = index; } | |
| 2164 void set_log2_scale(int log2_scale) { _log2_scale = log2_scale; } | |
| 2165 | |
| 2166 // generic | |
| 1584 | 2167 virtual void input_values_do(ValueVisitor* f) { UnsafeOp::input_values_do(f); |
| 2168 f->visit(&_base); | |
| 2169 if (has_index()) f->visit(&_index); } | |
| 0 | 2170 }; |
| 2171 | |
| 2172 | |
| 2173 LEAF(UnsafeGetRaw, UnsafeRawOp) | |
| 2174 private: | |
| 2002 | 2175 bool _may_be_unaligned, _is_wide; // For OSREntry |
| 0 | 2176 |
| 2177 public: | |
| 2002 | 2178 UnsafeGetRaw(BasicType basic_type, Value addr, bool may_be_unaligned, bool is_wide = false) |
| 0 | 2179 : UnsafeRawOp(basic_type, addr, false) { |
| 2180 _may_be_unaligned = may_be_unaligned; | |
| 2002 | 2181 _is_wide = is_wide; |
| 0 | 2182 } |
| 2183 | |
| 2002 | 2184 UnsafeGetRaw(BasicType basic_type, Value base, Value index, int log2_scale, bool may_be_unaligned, bool is_wide = false) |
| 0 | 2185 : UnsafeRawOp(basic_type, base, index, log2_scale, false) { |
| 2186 _may_be_unaligned = may_be_unaligned; | |
| 2002 | 2187 _is_wide = is_wide; |
| 0 | 2188 } |
| 2189 | |
| 2002 | 2190 bool may_be_unaligned() { return _may_be_unaligned; } |
| 2191 bool is_wide() { return _is_wide; } | |
| 0 | 2192 }; |
| 2193 | |
| 2194 | |
| 2195 LEAF(UnsafePutRaw, UnsafeRawOp) | |
| 2196 private: | |
| 2197 Value _value; // Value to be stored | |
| 2198 | |
| 2199 public: | |
| 2200 UnsafePutRaw(BasicType basic_type, Value addr, Value value) | |
| 2201 : UnsafeRawOp(basic_type, addr, true) | |
| 2202 , _value(value) | |
| 2203 { | |
| 2204 assert(value != NULL, "just checking"); | |
| 2205 ASSERT_VALUES | |
| 2206 } | |
| 2207 | |
| 2208 UnsafePutRaw(BasicType basic_type, Value base, Value index, int log2_scale, Value value) | |
| 2209 : UnsafeRawOp(basic_type, base, index, log2_scale, true) | |
| 2210 , _value(value) | |
| 2211 { | |
| 2212 assert(value != NULL, "just checking"); | |
| 2213 ASSERT_VALUES | |
| 2214 } | |
| 2215 | |
| 2216 // accessors | |
| 2217 Value value() { return _value; } | |
| 2218 | |
| 2219 // generic | |
| 1584 | 2220 virtual void input_values_do(ValueVisitor* f) { UnsafeRawOp::input_values_do(f); |
| 2221 f->visit(&_value); } | |
| 0 | 2222 }; |
| 2223 | |
| 2224 | |
| 2225 BASE(UnsafeObjectOp, UnsafeOp) | |
| 2226 private: | |
| 2227 Value _object; // Object to be fetched from or mutated | |
| 2228 Value _offset; // Offset within object | |
| 2229 bool _is_volatile; // true if volatile - dl/JSR166 | |
| 2230 public: | |
| 2231 UnsafeObjectOp(BasicType basic_type, Value object, Value offset, bool is_put, bool is_volatile) | |
| 2232 : UnsafeOp(basic_type, is_put), _object(object), _offset(offset), _is_volatile(is_volatile) | |
| 2233 { | |
| 2234 } | |
| 2235 | |
| 2236 // accessors | |
| 2237 Value object() { return _object; } | |
| 2238 Value offset() { return _offset; } | |
| 2239 bool is_volatile() { return _is_volatile; } | |
| 2240 // generic | |
| 1584 | 2241 virtual void input_values_do(ValueVisitor* f) { UnsafeOp::input_values_do(f); |
| 2242 f->visit(&_object); | |
| 2243 f->visit(&_offset); } | |
| 0 | 2244 }; |
| 2245 | |
| 2246 | |
| 2247 LEAF(UnsafeGetObject, UnsafeObjectOp) | |
| 2248 public: | |
| 2249 UnsafeGetObject(BasicType basic_type, Value object, Value offset, bool is_volatile) | |
| 2250 : UnsafeObjectOp(basic_type, object, offset, false, is_volatile) | |
| 2251 { | |
| 2252 ASSERT_VALUES | |
| 2253 } | |
| 2254 }; | |
| 2255 | |
| 2256 | |
| 2257 LEAF(UnsafePutObject, UnsafeObjectOp) | |
| 2258 private: | |
| 2259 Value _value; // Value to be stored | |
| 2260 public: | |
| 2261 UnsafePutObject(BasicType basic_type, Value object, Value offset, Value value, bool is_volatile) | |
| 2262 : UnsafeObjectOp(basic_type, object, offset, true, is_volatile) | |
| 2263 , _value(value) | |
| 2264 { | |
| 2265 ASSERT_VALUES | |
| 2266 } | |
| 2267 | |
| 2268 // accessors | |
| 2269 Value value() { return _value; } | |
| 2270 | |
| 2271 // generic | |
| 1584 | 2272 virtual void input_values_do(ValueVisitor* f) { UnsafeObjectOp::input_values_do(f); |
| 2273 f->visit(&_value); } | |
| 0 | 2274 }; |
| 2275 | |
| 2276 | |
| 2277 BASE(UnsafePrefetch, UnsafeObjectOp) | |
| 2278 public: | |
| 2279 UnsafePrefetch(Value object, Value offset) | |
| 2280 : UnsafeObjectOp(T_VOID, object, offset, false, false) | |
| 2281 { | |
| 2282 } | |
| 2283 }; | |
| 2284 | |
| 2285 | |
| 2286 LEAF(UnsafePrefetchRead, UnsafePrefetch) | |
| 2287 public: | |
| 2288 UnsafePrefetchRead(Value object, Value offset) | |
| 2289 : UnsafePrefetch(object, offset) | |
| 2290 { | |
| 2291 ASSERT_VALUES | |
| 2292 } | |
| 2293 }; | |
| 2294 | |
| 2295 | |
| 2296 LEAF(UnsafePrefetchWrite, UnsafePrefetch) | |
| 2297 public: | |
| 2298 UnsafePrefetchWrite(Value object, Value offset) | |
| 2299 : UnsafePrefetch(object, offset) | |
| 2300 { | |
| 2301 ASSERT_VALUES | |
| 2302 } | |
| 2303 }; | |
| 2304 | |
| 2305 LEAF(ProfileCall, Instruction) | |
| 2306 private: | |
| 2307 ciMethod* _method; | |
| 2308 int _bci_of_invoke; | |
|
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2309 ciMethod* _callee; // the method that is called at the given bci |
| 0 | 2310 Value _recv; |
| 2311 ciKlass* _known_holder; | |
| 2312 | |
| 2313 public: | |
|
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2314 ProfileCall(ciMethod* method, int bci, ciMethod* callee, Value recv, ciKlass* known_holder) |
| 0 | 2315 : Instruction(voidType) |
| 2316 , _method(method) | |
| 2317 , _bci_of_invoke(bci) | |
|
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2318 , _callee(callee) |
| 0 | 2319 , _recv(recv) |
| 2320 , _known_holder(known_holder) | |
| 2321 { | |
| 2322 // The ProfileCall has side-effects and must occur precisely where located | |
| 2323 pin(); | |
| 2324 } | |
| 2325 | |
| 2326 ciMethod* method() { return _method; } | |
| 2327 int bci_of_invoke() { return _bci_of_invoke; } | |
|
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2328 ciMethod* callee() { return _callee; } |
| 0 | 2329 Value recv() { return _recv; } |
| 2330 ciKlass* known_holder() { return _known_holder; } | |
| 2331 | |
| 1584 | 2332 virtual void input_values_do(ValueVisitor* f) { if (_recv != NULL) f->visit(&_recv); } |
| 0 | 2333 }; |
| 2334 | |
|
2166
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2335 |
|
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2336 // Call some C runtime function that doesn't safepoint, |
|
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2337 // optionally passing the current thread as the first argument. |
|
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2338 LEAF(RuntimeCall, Instruction) |
|
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2339 private: |
|
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2340 const char* _entry_name; |
|
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2341 address _entry; |
|
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2342 Values* _args; |
|
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2343 bool _pass_thread; // Pass the JavaThread* as an implicit first argument |
|
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|
2344 |
|
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|
2345 public: |
|
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2346 RuntimeCall(ValueType* type, const char* entry_name, address entry, Values* args, bool pass_thread = true) |
|
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2347 : Instruction(type) |
|
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2348 , _entry(entry) |
|
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2349 , _args(args) |
|
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2350 , _entry_name(entry_name) |
|
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2351 , _pass_thread(pass_thread) { |
|
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2352 ASSERT_VALUES |
|
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2353 pin(); |
|
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2354 } |
|
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2355 |
|
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2356 const char* entry_name() const { return _entry_name; } |
|
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2357 address entry() const { return _entry; } |
|
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2358 int number_of_arguments() const { return _args->length(); } |
|
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2359 Value argument_at(int i) const { return _args->at(i); } |
|
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2360 bool pass_thread() const { return _pass_thread; } |
|
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2361 |
|
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2362 virtual void input_values_do(ValueVisitor* f) { |
|
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2363 for (int i = 0; i < _args->length(); i++) f->visit(_args->adr_at(i)); |
|
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2364 } |
|
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|
2365 }; |
|
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|
2366 |
| 1783 | 2367 // Use to trip invocation counter of an inlined method |
| 0 | 2368 |
| 1783 | 2369 LEAF(ProfileInvoke, Instruction) |
| 0 | 2370 private: |
| 1783 | 2371 ciMethod* _inlinee; |
| 2372 ValueStack* _state; | |
| 0 | 2373 |
| 2374 public: | |
| 1825 | 2375 ProfileInvoke(ciMethod* inlinee, ValueStack* state) |
| 0 | 2376 : Instruction(voidType) |
| 1783 | 2377 , _inlinee(inlinee) |
| 2378 , _state(state) | |
| 0 | 2379 { |
| 1783 | 2380 // The ProfileInvoke has side-effects and must occur precisely where located QQQ??? |
| 0 | 2381 pin(); |
| 2382 } | |
| 2383 | |
| 1783 | 2384 ciMethod* inlinee() { return _inlinee; } |
| 2385 ValueStack* state() { return _state; } | |
| 2386 virtual void input_values_do(ValueVisitor*) {} | |
| 2387 virtual void state_values_do(ValueVisitor*); | |
| 0 | 2388 }; |
| 2389 | |
|
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2390 LEAF(MemBar, Instruction) |
|
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2391 private: |
|
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2392 LIR_Code _code; |
|
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|
2393 |
|
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2394 public: |
|
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|
2395 MemBar(LIR_Code code) |
|
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|
2396 : Instruction(voidType) |
|
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|
2397 , _code(code) |
|
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|
2398 { |
|
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|
2399 pin(); |
|
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|
2400 } |
|
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|
2401 |
|
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|
2402 LIR_Code code() { return _code; } |
|
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|
2403 |
|
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|
2404 virtual void input_values_do(ValueVisitor*) {} |
|
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|
2405 }; |
|
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2406 |
| 0 | 2407 class BlockPair: public CompilationResourceObj { |
| 2408 private: | |
| 2409 BlockBegin* _from; | |
| 2410 BlockBegin* _to; | |
| 2411 public: | |
| 2412 BlockPair(BlockBegin* from, BlockBegin* to): _from(from), _to(to) {} | |
| 2413 BlockBegin* from() const { return _from; } | |
| 2414 BlockBegin* to() const { return _to; } | |
| 2415 bool is_same(BlockBegin* from, BlockBegin* to) const { return _from == from && _to == to; } | |
| 2416 bool is_same(BlockPair* p) const { return _from == p->from() && _to == p->to(); } | |
| 2417 void set_to(BlockBegin* b) { _to = b; } | |
| 2418 void set_from(BlockBegin* b) { _from = b; } | |
| 2419 }; | |
| 2420 | |
| 2421 | |
| 2422 define_array(BlockPairArray, BlockPair*) | |
| 2423 define_stack(BlockPairList, BlockPairArray) | |
| 2424 | |
| 2425 | |
| 2426 inline int BlockBegin::number_of_sux() const { assert(_end == NULL || _end->number_of_sux() == _successors.length(), "mismatch"); return _successors.length(); } | |
| 2427 inline BlockBegin* BlockBegin::sux_at(int i) const { assert(_end == NULL || _end->sux_at(i) == _successors.at(i), "mismatch"); return _successors.at(i); } | |
| 2428 inline void BlockBegin::add_successor(BlockBegin* sux) { assert(_end == NULL, "Would create mismatch with successors of BlockEnd"); _successors.append(sux); } | |
| 2429 | |
| 2430 #undef ASSERT_VALUES | |
| 1972 | 2431 |
| 2432 #endif // SHARE_VM_C1_C1_INSTRUCTION_HPP |