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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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50 struct OffsetRange { | 50 struct OffsetRange { |
51 OffsetRange(int from, int to) : from(from), to(to) {} | 51 OffsetRange(int from, int to) : from(from), to(to) {} |
52 int from; | 52 int from; |
53 int to; | 53 int to; |
54 }; | 54 }; |
55 | 55 |
56 // CompilationInfo encapsulates some information known at compile time. It | 56 // CompilationInfo encapsulates some information known at compile time. It |
57 // is constructed based on the resources available at compile-time. | 57 // is constructed based on the resources available at compile-time. |
58 class CompilationInfo { | 58 class CompilationInfo { |
59 public: | 59 public: |
60 CompilationInfo(Handle<JSFunction> closure, Zone* zone); | 60 CompilationInfo(Handle<JSFunction> closure, Zone* zone, Zone* phase_zone); |
61 virtual ~CompilationInfo(); | 61 virtual ~CompilationInfo(); |
62 | 62 |
63 Isolate* isolate() { | 63 Isolate* isolate() { |
64 ASSERT(Isolate::Current() == isolate_); | 64 ASSERT(Isolate::Current() == isolate_); |
65 return isolate_; | 65 return isolate_; |
66 } | 66 } |
67 Zone* zone() { return zone_; } | 67 Zone* zone() { return zone_; } |
| 68 Zone* phase_zone() { return phase_zone_; } |
68 bool is_lazy() const { return IsLazy::decode(flags_); } | 69 bool is_lazy() const { return IsLazy::decode(flags_); } |
69 bool is_eval() const { return IsEval::decode(flags_); } | 70 bool is_eval() const { return IsEval::decode(flags_); } |
70 bool is_global() const { return IsGlobal::decode(flags_); } | 71 bool is_global() const { return IsGlobal::decode(flags_); } |
71 bool is_classic_mode() const { return language_mode() == CLASSIC_MODE; } | 72 bool is_classic_mode() const { return language_mode() == CLASSIC_MODE; } |
72 bool is_extended_mode() const { return language_mode() == EXTENDED_MODE; } | 73 bool is_extended_mode() const { return language_mode() == EXTENDED_MODE; } |
73 LanguageMode language_mode() const { | 74 LanguageMode language_mode() const { |
74 return LanguageModeField::decode(flags_); | 75 return LanguageModeField::decode(flags_); |
75 } | 76 } |
76 bool is_in_loop() const { return IsInLoop::decode(flags_); } | 77 bool is_in_loop() const { return IsInLoop::decode(flags_); } |
77 FunctionLiteral* function() const { return function_; } | 78 FunctionLiteral* function() const { return function_; } |
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293 | 294 |
294 void AbortDueToDependentMap() { | 295 void AbortDueToDependentMap() { |
295 mode_ = DEPENDENT_MAP_ABORT; | 296 mode_ = DEPENDENT_MAP_ABORT; |
296 } | 297 } |
297 | 298 |
298 bool HasAbortedDueToDependentMap() { | 299 bool HasAbortedDueToDependentMap() { |
299 return mode_ == DEPENDENT_MAP_ABORT; | 300 return mode_ == DEPENDENT_MAP_ABORT; |
300 } | 301 } |
301 | 302 |
302 protected: | 303 protected: |
303 CompilationInfo(Handle<Script> script, Zone* zone); | 304 CompilationInfo(Handle<Script> script, |
304 CompilationInfo(Handle<SharedFunctionInfo> shared_info, Zone* zone); | 305 Zone* zone, |
305 CompilationInfo(HydrogenCodeStub* stub, Isolate* isolate, Zone* zone); | 306 Zone* phase_zone); |
| 307 CompilationInfo(Handle<SharedFunctionInfo> shared_info, |
| 308 Zone* zone, |
| 309 Zone* phase_zone); |
| 310 CompilationInfo(HydrogenCodeStub* stub, |
| 311 Isolate* isolate, |
| 312 Zone* zone, |
| 313 Zone* phase_zone); |
306 | 314 |
307 private: | 315 private: |
308 Isolate* isolate_; | 316 Isolate* isolate_; |
309 | 317 |
310 // Compilation mode. | 318 // Compilation mode. |
311 // BASE is generated by the full codegen, optionally prepared for bailouts. | 319 // BASE is generated by the full codegen, optionally prepared for bailouts. |
312 // OPTIMIZE is optimized code generated by the Hydrogen-based backend. | 320 // OPTIMIZE is optimized code generated by the Hydrogen-based backend. |
313 // NONOPT is generated by the full codegen and is not prepared for | 321 // NONOPT is generated by the full codegen and is not prepared for |
314 // recompilation/bailouts. These functions are never recompiled. | 322 // recompilation/bailouts. These functions are never recompiled. |
315 enum Mode { | 323 enum Mode { |
316 BASE, | 324 BASE, |
317 OPTIMIZE, | 325 OPTIMIZE, |
318 NONOPT, | 326 NONOPT, |
319 STUB, | 327 STUB, |
320 DEPENDENT_MAP_ABORT | 328 DEPENDENT_MAP_ABORT |
321 }; | 329 }; |
322 | 330 |
323 void Initialize(Isolate* isolate, Mode mode, Zone* zone); | 331 void Initialize(Isolate* isolate, Mode mode, Zone* zone, Zone* phase_zone); |
324 | 332 |
325 void SetMode(Mode mode) { | 333 void SetMode(Mode mode) { |
326 ASSERT(V8::UseCrankshaft()); | 334 ASSERT(V8::UseCrankshaft()); |
327 mode_ = mode; | 335 mode_ = mode; |
328 } | 336 } |
329 | 337 |
330 // Flags using template class BitField<type, start, length>. All are | 338 // Flags using template class BitField<type, start, length>. All are |
331 // false by default. | 339 // false by default. |
332 // | 340 // |
333 // Compilation is either eager or lazy. | 341 // Compilation is either eager or lazy. |
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387 // global script. Will be a null handle otherwise. | 395 // global script. Will be a null handle otherwise. |
388 Handle<Context> context_; | 396 Handle<Context> context_; |
389 | 397 |
390 // Compilation mode flag and whether deoptimization is allowed. | 398 // Compilation mode flag and whether deoptimization is allowed. |
391 Mode mode_; | 399 Mode mode_; |
392 BailoutId osr_ast_id_; | 400 BailoutId osr_ast_id_; |
393 | 401 |
394 // The zone from which the compilation pipeline working on this | 402 // The zone from which the compilation pipeline working on this |
395 // CompilationInfo allocates. | 403 // CompilationInfo allocates. |
396 Zone* zone_; | 404 Zone* zone_; |
| 405 // The phase zone where allocations local to a specific phase are |
| 406 // performed; be aware that this zone is cleared after each phase |
| 407 Zone* phase_zone_; |
397 | 408 |
398 DeferredHandles* deferred_handles_; | 409 DeferredHandles* deferred_handles_; |
399 | 410 |
400 ZoneList<Handle<Map> >* dependent_maps_[DependentCode::kGroupCount]; | 411 ZoneList<Handle<Map> >* dependent_maps_[DependentCode::kGroupCount]; |
401 | 412 |
402 template<typename T> | 413 template<typename T> |
403 void SaveHandle(Handle<T> *object) { | 414 void SaveHandle(Handle<T> *object) { |
404 if (!object->is_null()) { | 415 if (!object->is_null()) { |
405 Handle<T> handle(*(*object)); | 416 Handle<T> handle(*(*object)); |
406 *object = handle; | 417 *object = handle; |
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421 | 432 |
422 DISALLOW_COPY_AND_ASSIGN(CompilationInfo); | 433 DISALLOW_COPY_AND_ASSIGN(CompilationInfo); |
423 }; | 434 }; |
424 | 435 |
425 | 436 |
426 // Exactly like a CompilationInfo, except also creates and enters a | 437 // Exactly like a CompilationInfo, except also creates and enters a |
427 // Zone on construction and deallocates it on exit. | 438 // Zone on construction and deallocates it on exit. |
428 class CompilationInfoWithZone: public CompilationInfo { | 439 class CompilationInfoWithZone: public CompilationInfo { |
429 public: | 440 public: |
430 explicit CompilationInfoWithZone(Handle<Script> script) | 441 explicit CompilationInfoWithZone(Handle<Script> script) |
431 : CompilationInfo(script, &zone_), | 442 : CompilationInfo(script, &zone_, &phase_zone_), |
432 zone_(script->GetIsolate()), | 443 zone_(script->GetIsolate()), |
433 zone_scope_(&zone_, DELETE_ON_EXIT) {} | 444 zone_scope_(&zone_, DELETE_ON_EXIT), |
| 445 phase_zone_(script->GetIsolate()) {} |
434 explicit CompilationInfoWithZone(Handle<SharedFunctionInfo> shared_info) | 446 explicit CompilationInfoWithZone(Handle<SharedFunctionInfo> shared_info) |
435 : CompilationInfo(shared_info, &zone_), | 447 : CompilationInfo(shared_info, &zone_, &phase_zone_), |
436 zone_(shared_info->GetIsolate()), | 448 zone_(shared_info->GetIsolate()), |
437 zone_scope_(&zone_, DELETE_ON_EXIT) {} | 449 zone_scope_(&zone_, DELETE_ON_EXIT), |
| 450 phase_zone_(shared_info->GetIsolate()) {} |
438 explicit CompilationInfoWithZone(Handle<JSFunction> closure) | 451 explicit CompilationInfoWithZone(Handle<JSFunction> closure) |
439 : CompilationInfo(closure, &zone_), | 452 : CompilationInfo(closure, &zone_, &phase_zone_), |
440 zone_(closure->GetIsolate()), | 453 zone_(closure->GetIsolate()), |
441 zone_scope_(&zone_, DELETE_ON_EXIT) {} | 454 zone_scope_(&zone_, DELETE_ON_EXIT), |
| 455 phase_zone_(closure->GetIsolate()) {} |
442 CompilationInfoWithZone(HydrogenCodeStub* stub, Isolate* isolate) | 456 CompilationInfoWithZone(HydrogenCodeStub* stub, Isolate* isolate) |
443 : CompilationInfo(stub, isolate, &zone_), | 457 : CompilationInfo(stub, isolate, &zone_, &phase_zone_), |
444 zone_(isolate), | 458 zone_(isolate), |
445 zone_scope_(&zone_, DELETE_ON_EXIT) {} | 459 zone_scope_(&zone_, DELETE_ON_EXIT), |
| 460 phase_zone_(isolate) {} |
446 | 461 |
447 // Virtual destructor because a CompilationInfoWithZone has to exit the | 462 // Virtual destructor because a CompilationInfoWithZone has to exit the |
448 // zone scope and get rid of dependent maps even when the destructor is | 463 // zone scope and get rid of dependent maps even when the destructor is |
449 // called when cast as a CompilationInfo. | 464 // called when cast as a CompilationInfo. |
450 virtual ~CompilationInfoWithZone() { | 465 virtual ~CompilationInfoWithZone() { |
451 RollbackDependentMaps(); | 466 RollbackDependentMaps(); |
452 } | 467 } |
453 | 468 |
454 private: | 469 private: |
455 Zone zone_; | 470 Zone zone_; |
456 ZoneScope zone_scope_; | 471 ZoneScope zone_scope_; |
| 472 Zone phase_zone_; |
457 }; | 473 }; |
458 | 474 |
459 | 475 |
460 // A wrapper around a CompilationInfo that detaches the Handles from | 476 // A wrapper around a CompilationInfo that detaches the Handles from |
461 // the underlying DeferredHandleScope and stores them in info_ on | 477 // the underlying DeferredHandleScope and stores them in info_ on |
462 // destruction. | 478 // destruction. |
463 class CompilationHandleScope BASE_EMBEDDED { | 479 class CompilationHandleScope BASE_EMBEDDED { |
464 public: | 480 public: |
465 explicit CompilationHandleScope(CompilationInfo* info) | 481 explicit CompilationHandleScope(CompilationInfo* info) |
466 : deferred_(info->isolate()), info_(info) {} | 482 : deferred_(info->isolate()), info_(info) {} |
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613 | 629 |
614 static void RecordFunctionCompilation(Logger::LogEventsAndTags tag, | 630 static void RecordFunctionCompilation(Logger::LogEventsAndTags tag, |
615 CompilationInfo* info, | 631 CompilationInfo* info, |
616 Handle<SharedFunctionInfo> shared); | 632 Handle<SharedFunctionInfo> shared); |
617 }; | 633 }; |
618 | 634 |
619 | 635 |
620 } } // namespace v8::internal | 636 } } // namespace v8::internal |
621 | 637 |
622 #endif // V8_COMPILER_H_ | 638 #endif // V8_COMPILER_H_ |
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