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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<Script> script, Zone* zone); |
| 61 CompilationInfo(Handle<SharedFunctionInfo> shared_info, Zone* zone); |
60 CompilationInfo(Handle<JSFunction> closure, Zone* zone); | 62 CompilationInfo(Handle<JSFunction> closure, Zone* zone); |
61 virtual ~CompilationInfo(); | 63 CompilationInfo(HydrogenCodeStub* stub, Isolate* isolate, Zone* zone); |
| 64 |
| 65 ~CompilationInfo(); |
62 | 66 |
63 Isolate* isolate() { | 67 Isolate* isolate() { |
64 ASSERT(Isolate::Current() == isolate_); | 68 ASSERT(Isolate::Current() == isolate_); |
65 return isolate_; | 69 return isolate_; |
66 } | 70 } |
67 Zone* zone() { return zone_; } | 71 Zone* zone() { return zone_; } |
68 bool is_lazy() const { return IsLazy::decode(flags_); } | 72 bool is_lazy() const { return IsLazy::decode(flags_); } |
69 bool is_eval() const { return IsEval::decode(flags_); } | 73 bool is_eval() const { return IsEval::decode(flags_); } |
70 bool is_global() const { return IsGlobal::decode(flags_); } | 74 bool is_global() const { return IsGlobal::decode(flags_); } |
71 bool is_classic_mode() const { return language_mode() == CLASSIC_MODE; } | 75 bool is_classic_mode() const { return language_mode() == CLASSIC_MODE; } |
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232 | 236 |
233 // Disable all optimization attempts of this info for the rest of the | 237 // Disable all optimization attempts of this info for the rest of the |
234 // current compilation pipeline. | 238 // current compilation pipeline. |
235 void AbortOptimization(); | 239 void AbortOptimization(); |
236 | 240 |
237 void set_deferred_handles(DeferredHandles* deferred_handles) { | 241 void set_deferred_handles(DeferredHandles* deferred_handles) { |
238 ASSERT(deferred_handles_ == NULL); | 242 ASSERT(deferred_handles_ == NULL); |
239 deferred_handles_ = deferred_handles; | 243 deferred_handles_ = deferred_handles; |
240 } | 244 } |
241 | 245 |
242 ZoneList<Handle<Map> >* dependent_maps(DependentCode::DependencyGroup group) { | |
243 if (dependent_maps_[group] == NULL) { | |
244 dependent_maps_[group] = new(zone_) ZoneList<Handle<Map> >(2, zone_); | |
245 } | |
246 return dependent_maps_[group]; | |
247 } | |
248 | |
249 void CommitDependentMaps(Handle<Code> code); | |
250 | |
251 void RollbackDependentMaps(); | |
252 | |
253 void SaveHandles() { | 246 void SaveHandles() { |
254 SaveHandle(&closure_); | 247 SaveHandle(&closure_); |
255 SaveHandle(&shared_info_); | 248 SaveHandle(&shared_info_); |
256 SaveHandle(&context_); | 249 SaveHandle(&context_); |
257 SaveHandle(&script_); | 250 SaveHandle(&script_); |
258 } | 251 } |
259 | 252 |
260 const char* bailout_reason() const { return bailout_reason_; } | 253 const char* bailout_reason() const { return bailout_reason_; } |
261 void set_bailout_reason(const char* reason) { bailout_reason_ = reason; } | 254 void set_bailout_reason(const char* reason) { bailout_reason_ = reason; } |
262 | 255 |
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276 inline void AddNoFrameRange(int from, int to) { | 269 inline void AddNoFrameRange(int from, int to) { |
277 if (no_frame_ranges_) no_frame_ranges_->Add(OffsetRange(from, to)); | 270 if (no_frame_ranges_) no_frame_ranges_->Add(OffsetRange(from, to)); |
278 } | 271 } |
279 | 272 |
280 List<OffsetRange>* ReleaseNoFrameRanges() { | 273 List<OffsetRange>* ReleaseNoFrameRanges() { |
281 List<OffsetRange>* result = no_frame_ranges_; | 274 List<OffsetRange>* result = no_frame_ranges_; |
282 no_frame_ranges_ = NULL; | 275 no_frame_ranges_ = NULL; |
283 return result; | 276 return result; |
284 } | 277 } |
285 | 278 |
286 Handle<Foreign> object_wrapper() { | |
287 if (object_wrapper_.is_null()) { | |
288 object_wrapper_ = | |
289 isolate()->factory()->NewForeign(reinterpret_cast<Address>(this)); | |
290 } | |
291 return object_wrapper_; | |
292 } | |
293 | |
294 void AbortDueToDependentMap() { | |
295 mode_ = DEPENDENT_MAP_ABORT; | |
296 } | |
297 | |
298 bool HasAbortedDueToDependentMap() { | |
299 return mode_ == DEPENDENT_MAP_ABORT; | |
300 } | |
301 | |
302 protected: | |
303 CompilationInfo(Handle<Script> script, Zone* zone); | |
304 CompilationInfo(Handle<SharedFunctionInfo> shared_info, Zone* zone); | |
305 CompilationInfo(HydrogenCodeStub* stub, Isolate* isolate, Zone* zone); | |
306 | 279 |
307 private: | 280 private: |
308 Isolate* isolate_; | 281 Isolate* isolate_; |
309 | 282 |
310 // Compilation mode. | 283 // Compilation mode. |
311 // BASE is generated by the full codegen, optionally prepared for bailouts. | 284 // BASE is generated by the full codegen, optionally prepared for bailouts. |
312 // OPTIMIZE is optimized code generated by the Hydrogen-based backend. | 285 // OPTIMIZE is optimized code generated by the Hydrogen-based backend. |
313 // NONOPT is generated by the full codegen and is not prepared for | 286 // NONOPT is generated by the full codegen and is not prepared for |
314 // recompilation/bailouts. These functions are never recompiled. | 287 // recompilation/bailouts. These functions are never recompiled. |
315 enum Mode { | 288 enum Mode { |
316 BASE, | 289 BASE, |
317 OPTIMIZE, | 290 OPTIMIZE, |
318 NONOPT, | 291 NONOPT, |
319 STUB, | 292 STUB |
320 DEPENDENT_MAP_ABORT | |
321 }; | 293 }; |
322 | 294 |
323 void Initialize(Isolate* isolate, Mode mode, Zone* zone); | 295 void Initialize(Isolate* isolate, Mode mode, Zone* zone); |
324 | 296 |
325 void SetMode(Mode mode) { | 297 void SetMode(Mode mode) { |
326 ASSERT(V8::UseCrankshaft()); | 298 ASSERT(V8::UseCrankshaft()); |
327 mode_ = mode; | 299 mode_ = mode; |
328 } | 300 } |
329 | 301 |
330 // Flags using template class BitField<type, start, length>. All are | 302 // Flags using template class BitField<type, start, length>. All are |
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390 // Compilation mode flag and whether deoptimization is allowed. | 362 // Compilation mode flag and whether deoptimization is allowed. |
391 Mode mode_; | 363 Mode mode_; |
392 BailoutId osr_ast_id_; | 364 BailoutId osr_ast_id_; |
393 | 365 |
394 // The zone from which the compilation pipeline working on this | 366 // The zone from which the compilation pipeline working on this |
395 // CompilationInfo allocates. | 367 // CompilationInfo allocates. |
396 Zone* zone_; | 368 Zone* zone_; |
397 | 369 |
398 DeferredHandles* deferred_handles_; | 370 DeferredHandles* deferred_handles_; |
399 | 371 |
400 ZoneList<Handle<Map> >* dependent_maps_[DependentCode::kGroupCount]; | |
401 | |
402 template<typename T> | 372 template<typename T> |
403 void SaveHandle(Handle<T> *object) { | 373 void SaveHandle(Handle<T> *object) { |
404 if (!object->is_null()) { | 374 if (!object->is_null()) { |
405 Handle<T> handle(*(*object)); | 375 Handle<T> handle(*(*object)); |
406 *object = handle; | 376 *object = handle; |
407 } | 377 } |
408 } | 378 } |
409 | 379 |
410 const char* bailout_reason_; | 380 const char* bailout_reason_; |
411 | 381 |
412 int prologue_offset_; | 382 int prologue_offset_; |
413 | 383 |
414 List<OffsetRange>* no_frame_ranges_; | 384 List<OffsetRange>* no_frame_ranges_; |
415 | 385 |
416 // A copy of shared_info()->opt_count() to avoid handle deref | 386 // A copy of shared_info()->opt_count() to avoid handle deref |
417 // during graph optimization. | 387 // during graph optimization. |
418 int opt_count_; | 388 int opt_count_; |
419 | 389 |
420 Handle<Foreign> object_wrapper_; | |
421 | |
422 DISALLOW_COPY_AND_ASSIGN(CompilationInfo); | 390 DISALLOW_COPY_AND_ASSIGN(CompilationInfo); |
423 }; | 391 }; |
424 | 392 |
425 | 393 |
426 // Exactly like a CompilationInfo, except also creates and enters a | 394 // Exactly like a CompilationInfo, except also creates and enters a |
427 // Zone on construction and deallocates it on exit. | 395 // Zone on construction and deallocates it on exit. |
428 class CompilationInfoWithZone: public CompilationInfo { | 396 class CompilationInfoWithZone: public CompilationInfo { |
429 public: | 397 public: |
430 explicit CompilationInfoWithZone(Handle<Script> script) | 398 explicit CompilationInfoWithZone(Handle<Script> script) |
431 : CompilationInfo(script, &zone_), | 399 : CompilationInfo(script, &zone_), |
432 zone_(script->GetIsolate()), | 400 zone_(script->GetIsolate()), |
433 zone_scope_(&zone_, DELETE_ON_EXIT) {} | 401 zone_scope_(&zone_, DELETE_ON_EXIT) {} |
434 explicit CompilationInfoWithZone(Handle<SharedFunctionInfo> shared_info) | 402 explicit CompilationInfoWithZone(Handle<SharedFunctionInfo> shared_info) |
435 : CompilationInfo(shared_info, &zone_), | 403 : CompilationInfo(shared_info, &zone_), |
436 zone_(shared_info->GetIsolate()), | 404 zone_(shared_info->GetIsolate()), |
437 zone_scope_(&zone_, DELETE_ON_EXIT) {} | 405 zone_scope_(&zone_, DELETE_ON_EXIT) {} |
438 explicit CompilationInfoWithZone(Handle<JSFunction> closure) | 406 explicit CompilationInfoWithZone(Handle<JSFunction> closure) |
439 : CompilationInfo(closure, &zone_), | 407 : CompilationInfo(closure, &zone_), |
440 zone_(closure->GetIsolate()), | 408 zone_(closure->GetIsolate()), |
441 zone_scope_(&zone_, DELETE_ON_EXIT) {} | 409 zone_scope_(&zone_, DELETE_ON_EXIT) {} |
442 CompilationInfoWithZone(HydrogenCodeStub* stub, Isolate* isolate) | 410 explicit CompilationInfoWithZone(HydrogenCodeStub* stub, Isolate* isolate) |
443 : CompilationInfo(stub, isolate, &zone_), | 411 : CompilationInfo(stub, isolate, &zone_), |
444 zone_(isolate), | 412 zone_(isolate), |
445 zone_scope_(&zone_, DELETE_ON_EXIT) {} | 413 zone_scope_(&zone_, DELETE_ON_EXIT) {} |
446 | 414 |
447 // Virtual destructor because a CompilationInfoWithZone has to exit the | |
448 // zone scope and get rid of dependent maps even when the destructor is | |
449 // called when cast as a CompilationInfo. | |
450 virtual ~CompilationInfoWithZone() { | |
451 RollbackDependentMaps(); | |
452 } | |
453 | |
454 private: | 415 private: |
455 Zone zone_; | 416 Zone zone_; |
456 ZoneScope zone_scope_; | 417 ZoneScope zone_scope_; |
457 }; | 418 }; |
458 | 419 |
459 | 420 |
460 // A wrapper around a CompilationInfo that detaches the Handles from | 421 // A wrapper around a CompilationInfo that detaches the Handles from |
461 // the underlying DeferredHandleScope and stores them in info_ on | 422 // the underlying DeferredHandleScope and stores them in info_ on |
462 // destruction. | 423 // destruction. |
463 class CompilationHandleScope BASE_EMBEDDED { | 424 class CompilationHandleScope BASE_EMBEDDED { |
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613 | 574 |
614 static void RecordFunctionCompilation(Logger::LogEventsAndTags tag, | 575 static void RecordFunctionCompilation(Logger::LogEventsAndTags tag, |
615 CompilationInfo* info, | 576 CompilationInfo* info, |
616 Handle<SharedFunctionInfo> shared); | 577 Handle<SharedFunctionInfo> shared); |
617 }; | 578 }; |
618 | 579 |
619 | 580 |
620 } } // namespace v8::internal | 581 } } // namespace v8::internal |
621 | 582 |
622 #endif // V8_COMPILER_H_ | 583 #endif // V8_COMPILER_H_ |
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