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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/allocation.h" | 8 #include "src/allocation.h" |
9 #include "src/compiler/instruction.h" | 9 #include "src/compiler/instruction.h" |
10 #include "src/compiler/node.h" | 10 #include "src/compiler/node.h" |
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384 // Liveness analysis support. | 384 // Liveness analysis support. |
385 void InitializeLivenessAnalysis(); | 385 void InitializeLivenessAnalysis(); |
386 BitVector* ComputeLiveOut(BasicBlock* block); | 386 BitVector* ComputeLiveOut(BasicBlock* block); |
387 void AddInitialIntervals(BasicBlock* block, BitVector* live_out); | 387 void AddInitialIntervals(BasicBlock* block, BitVector* live_out); |
388 bool IsOutputRegisterOf(Instruction* instr, int index); | 388 bool IsOutputRegisterOf(Instruction* instr, int index); |
389 bool IsOutputDoubleRegisterOf(Instruction* instr, int index); | 389 bool IsOutputDoubleRegisterOf(Instruction* instr, int index); |
390 void ProcessInstructions(BasicBlock* block, BitVector* live); | 390 void ProcessInstructions(BasicBlock* block, BitVector* live); |
391 void MeetRegisterConstraints(BasicBlock* block); | 391 void MeetRegisterConstraints(BasicBlock* block); |
392 void MeetConstraintsBetween(Instruction* first, Instruction* second, | 392 void MeetConstraintsBetween(Instruction* first, Instruction* second, |
393 int gap_index); | 393 int gap_index); |
394 void MeetRegisterConstraintsForLastInstructionInBlock(BasicBlock* block); | |
395 void ResolvePhis(BasicBlock* block); | 394 void ResolvePhis(BasicBlock* block); |
396 | 395 |
397 // Helper methods for building intervals. | 396 // Helper methods for building intervals. |
398 InstructionOperand* AllocateFixed(UnallocatedOperand* operand, int pos, | 397 InstructionOperand* AllocateFixed(UnallocatedOperand* operand, int pos, |
399 bool is_tagged); | 398 bool is_tagged); |
400 LiveRange* LiveRangeFor(InstructionOperand* operand); | 399 LiveRange* LiveRangeFor(InstructionOperand* operand); |
401 void Define(LifetimePosition position, InstructionOperand* operand, | 400 void Define(LifetimePosition position, InstructionOperand* operand, |
402 InstructionOperand* hint); | 401 InstructionOperand* hint); |
403 void Use(LifetimePosition block_start, LifetimePosition position, | 402 void Use(LifetimePosition block_start, LifetimePosition position, |
404 InstructionOperand* operand, InstructionOperand* hint); | 403 InstructionOperand* operand, InstructionOperand* hint); |
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539 RegisterAllocator* allocator_; | 538 RegisterAllocator* allocator_; |
540 unsigned allocator_zone_start_allocation_size_; | 539 unsigned allocator_zone_start_allocation_size_; |
541 | 540 |
542 DISALLOW_COPY_AND_ASSIGN(RegisterAllocatorPhase); | 541 DISALLOW_COPY_AND_ASSIGN(RegisterAllocatorPhase); |
543 }; | 542 }; |
544 } | 543 } |
545 } | 544 } |
546 } // namespace v8::internal::compiler | 545 } // namespace v8::internal::compiler |
547 | 546 |
548 #endif // V8_REGISTER_ALLOCATOR_H_ | 547 #endif // V8_REGISTER_ALLOCATOR_H_ |
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