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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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452 | 452 |
453 | 453 |
454 class LEnvironment: public ZoneObject { | 454 class LEnvironment: public ZoneObject { |
455 public: | 455 public: |
456 LEnvironment(Handle<JSFunction> closure, | 456 LEnvironment(Handle<JSFunction> closure, |
457 FrameType frame_type, | 457 FrameType frame_type, |
458 int ast_id, | 458 int ast_id, |
459 int parameter_count, | 459 int parameter_count, |
460 int argument_count, | 460 int argument_count, |
461 int value_count, | 461 int value_count, |
462 LEnvironment* outer) | 462 LEnvironment* outer, |
| 463 Zone* zone) |
463 : closure_(closure), | 464 : closure_(closure), |
464 frame_type_(frame_type), | 465 frame_type_(frame_type), |
465 arguments_stack_height_(argument_count), | 466 arguments_stack_height_(argument_count), |
466 deoptimization_index_(Safepoint::kNoDeoptimizationIndex), | 467 deoptimization_index_(Safepoint::kNoDeoptimizationIndex), |
467 translation_index_(-1), | 468 translation_index_(-1), |
468 ast_id_(ast_id), | 469 ast_id_(ast_id), |
469 parameter_count_(parameter_count), | 470 parameter_count_(parameter_count), |
470 pc_offset_(-1), | 471 pc_offset_(-1), |
471 values_(value_count), | 472 values_(value_count), |
472 is_tagged_(value_count, closure->GetHeap()->isolate()->zone()), | 473 is_tagged_(value_count, closure->GetHeap()->isolate()->zone()), |
473 spilled_registers_(NULL), | 474 spilled_registers_(NULL), |
474 spilled_double_registers_(NULL), | 475 spilled_double_registers_(NULL), |
475 outer_(outer) { } | 476 outer_(outer), |
| 477 zone_(zone) { } |
476 | 478 |
477 Handle<JSFunction> closure() const { return closure_; } | 479 Handle<JSFunction> closure() const { return closure_; } |
478 FrameType frame_type() const { return frame_type_; } | 480 FrameType frame_type() const { return frame_type_; } |
479 int arguments_stack_height() const { return arguments_stack_height_; } | 481 int arguments_stack_height() const { return arguments_stack_height_; } |
480 int deoptimization_index() const { return deoptimization_index_; } | 482 int deoptimization_index() const { return deoptimization_index_; } |
481 int translation_index() const { return translation_index_; } | 483 int translation_index() const { return translation_index_; } |
482 int ast_id() const { return ast_id_; } | 484 int ast_id() const { return ast_id_; } |
483 int parameter_count() const { return parameter_count_; } | 485 int parameter_count() const { return parameter_count_; } |
484 int pc_offset() const { return pc_offset_; } | 486 int pc_offset() const { return pc_offset_; } |
485 LOperand** spilled_registers() const { return spilled_registers_; } | 487 LOperand** spilled_registers() const { return spilled_registers_; } |
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513 } | 515 } |
514 | 516 |
515 void SetSpilledRegisters(LOperand** registers, | 517 void SetSpilledRegisters(LOperand** registers, |
516 LOperand** double_registers) { | 518 LOperand** double_registers) { |
517 spilled_registers_ = registers; | 519 spilled_registers_ = registers; |
518 spilled_double_registers_ = double_registers; | 520 spilled_double_registers_ = double_registers; |
519 } | 521 } |
520 | 522 |
521 void PrintTo(StringStream* stream); | 523 void PrintTo(StringStream* stream); |
522 | 524 |
| 525 Zone* zone() { return zone_; } |
| 526 |
523 private: | 527 private: |
524 Handle<JSFunction> closure_; | 528 Handle<JSFunction> closure_; |
525 FrameType frame_type_; | 529 FrameType frame_type_; |
526 int arguments_stack_height_; | 530 int arguments_stack_height_; |
527 int deoptimization_index_; | 531 int deoptimization_index_; |
528 int translation_index_; | 532 int translation_index_; |
529 int ast_id_; | 533 int ast_id_; |
530 int parameter_count_; | 534 int parameter_count_; |
531 int pc_offset_; | 535 int pc_offset_; |
532 ZoneList<LOperand*> values_; | 536 ZoneList<LOperand*> values_; |
533 BitVector is_tagged_; | 537 BitVector is_tagged_; |
534 | 538 |
535 // Allocation index indexed arrays of spill slot operands for registers | 539 // Allocation index indexed arrays of spill slot operands for registers |
536 // that are also in spill slots at an OSR entry. NULL for environments | 540 // that are also in spill slots at an OSR entry. NULL for environments |
537 // that do not correspond to an OSR entry. | 541 // that do not correspond to an OSR entry. |
538 LOperand** spilled_registers_; | 542 LOperand** spilled_registers_; |
539 LOperand** spilled_double_registers_; | 543 LOperand** spilled_double_registers_; |
540 | 544 |
541 LEnvironment* outer_; | 545 LEnvironment* outer_; |
| 546 |
| 547 Zone* zone_; |
542 }; | 548 }; |
543 | 549 |
544 | 550 |
545 // Iterates over the non-null, non-constant operands in an environment. | 551 // Iterates over the non-null, non-constant operands in an environment. |
546 class ShallowIterator BASE_EMBEDDED { | 552 class ShallowIterator BASE_EMBEDDED { |
547 public: | 553 public: |
548 explicit ShallowIterator(LEnvironment* env) | 554 explicit ShallowIterator(LEnvironment* env) |
549 : env_(env), | 555 : env_(env), |
550 limit_(env != NULL ? env->values()->length() : 0), | 556 limit_(env != NULL ? env->values()->length() : 0), |
551 current_(0) { | 557 current_(0) { |
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615 ShallowIterator current_iterator_; | 621 ShallowIterator current_iterator_; |
616 }; | 622 }; |
617 | 623 |
618 | 624 |
619 int ElementsKindToShiftSize(ElementsKind elements_kind); | 625 int ElementsKindToShiftSize(ElementsKind elements_kind); |
620 | 626 |
621 | 627 |
622 } } // namespace v8::internal | 628 } } // namespace v8::internal |
623 | 629 |
624 #endif // V8_LITHIUM_H_ | 630 #endif // V8_LITHIUM_H_ |
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