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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_REGISTER_ALLOCATOR_H_ | 5 #ifndef V8_REGISTER_ALLOCATOR_H_ |
6 #define V8_REGISTER_ALLOCATOR_H_ | 6 #define V8_REGISTER_ALLOCATOR_H_ |
7 | 7 |
8 #include "src/compiler/instruction.h" | 8 #include "src/compiler/instruction.h" |
9 #include "src/zone-containers.h" | 9 #include "src/zone-containers.h" |
10 | 10 |
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463 private: | 463 private: |
464 int GetVirtualRegister() { return code()->NextVirtualRegister(); } | 464 int GetVirtualRegister() { return code()->NextVirtualRegister(); } |
465 | 465 |
466 // Checks whether the value of a given virtual register is a reference. | 466 // Checks whether the value of a given virtual register is a reference. |
467 // TODO(titzer): rename this to IsReference. | 467 // TODO(titzer): rename this to IsReference. |
468 bool HasTaggedValue(int virtual_register) const; | 468 bool HasTaggedValue(int virtual_register) const; |
469 | 469 |
470 // Returns the register kind required by the given virtual register. | 470 // Returns the register kind required by the given virtual register. |
471 RegisterKind RequiredRegisterKind(int virtual_register) const; | 471 RegisterKind RequiredRegisterKind(int virtual_register) const; |
472 | 472 |
| 473 // Creates a new live range. |
| 474 LiveRange* NewLiveRange(int index); |
| 475 |
473 // This zone is for InstructionOperands and moves that live beyond register | 476 // This zone is for InstructionOperands and moves that live beyond register |
474 // allocation. | 477 // allocation. |
475 Zone* code_zone() const { return code()->zone(); } | 478 Zone* code_zone() const { return code()->zone(); } |
476 | 479 |
477 BitVector* assigned_registers() { return assigned_registers_; } | 480 BitVector* assigned_registers() { return assigned_registers_; } |
478 BitVector* assigned_double_registers() { return assigned_double_registers_; } | 481 BitVector* assigned_double_registers() { return assigned_double_registers_; } |
479 | 482 |
480 #ifdef DEBUG | 483 #ifdef DEBUG |
481 void Verify() const; | 484 void Verify() const; |
482 #endif | 485 #endif |
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654 #endif | 657 #endif |
655 | 658 |
656 DISALLOW_COPY_AND_ASSIGN(RegisterAllocator); | 659 DISALLOW_COPY_AND_ASSIGN(RegisterAllocator); |
657 }; | 660 }; |
658 | 661 |
659 } // namespace compiler | 662 } // namespace compiler |
660 } // namespace internal | 663 } // namespace internal |
661 } // namespace v8 | 664 } // namespace v8 |
662 | 665 |
663 #endif // V8_REGISTER_ALLOCATOR_H_ | 666 #endif // V8_REGISTER_ALLOCATOR_H_ |
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