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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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41 class HBasicBlock; | 41 class HBasicBlock; |
42 class HGraph; | 42 class HGraph; |
43 class HInstruction; | 43 class HInstruction; |
44 class HPhi; | 44 class HPhi; |
45 class HTracer; | 45 class HTracer; |
46 class HValue; | 46 class HValue; |
47 class BitVector; | 47 class BitVector; |
48 class StringStream; | 48 class StringStream; |
49 | 49 |
50 class LArgument; | 50 class LArgument; |
51 class LChunk; | 51 class LPlatformChunk; |
52 class LOperand; | 52 class LOperand; |
53 class LUnallocated; | 53 class LUnallocated; |
54 class LConstantOperand; | 54 class LConstantOperand; |
55 class LGap; | 55 class LGap; |
56 class LParallelMove; | 56 class LParallelMove; |
57 class LPointerMap; | 57 class LPointerMap; |
58 class LStackSlot; | 58 class LStackSlot; |
59 class LRegister; | 59 class LRegister; |
60 | 60 |
61 | 61 |
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438 LAllocator(int first_virtual_register, HGraph* graph); | 438 LAllocator(int first_virtual_register, HGraph* graph); |
439 | 439 |
440 static void TraceAlloc(const char* msg, ...); | 440 static void TraceAlloc(const char* msg, ...); |
441 | 441 |
442 // Checks whether the value of a given virtual register is tagged. | 442 // Checks whether the value of a given virtual register is tagged. |
443 bool HasTaggedValue(int virtual_register) const; | 443 bool HasTaggedValue(int virtual_register) const; |
444 | 444 |
445 // Returns the register kind required by the given virtual register. | 445 // Returns the register kind required by the given virtual register. |
446 RegisterKind RequiredRegisterKind(int virtual_register) const; | 446 RegisterKind RequiredRegisterKind(int virtual_register) const; |
447 | 447 |
448 bool Allocate(LChunkBase* chunk); | 448 bool Allocate(LChunk* chunk); |
449 | 449 |
450 const ZoneList<LiveRange*>* live_ranges() const { return &live_ranges_; } | 450 const ZoneList<LiveRange*>* live_ranges() const { return &live_ranges_; } |
451 const Vector<LiveRange*>* fixed_live_ranges() const { | 451 const Vector<LiveRange*>* fixed_live_ranges() const { |
452 return &fixed_live_ranges_; | 452 return &fixed_live_ranges_; |
453 } | 453 } |
454 const Vector<LiveRange*>* fixed_double_live_ranges() const { | 454 const Vector<LiveRange*>* fixed_double_live_ranges() const { |
455 return &fixed_double_live_ranges_; | 455 return &fixed_double_live_ranges_; |
456 } | 456 } |
457 | 457 |
458 LChunk* chunk() const { return chunk_; } | 458 LPlatformChunk* chunk() const { return chunk_; } |
459 HGraph* graph() const { return graph_; } | 459 HGraph* graph() const { return graph_; } |
460 Zone* zone() const { return zone_; } | 460 Zone* zone() const { return zone_; } |
461 | 461 |
462 int GetVirtualRegister() { | 462 int GetVirtualRegister() { |
463 if (next_virtual_register_ > LUnallocated::kMaxVirtualRegisters) { | 463 if (next_virtual_register_ > LUnallocated::kMaxVirtualRegisters) { |
464 allocation_ok_ = false; | 464 allocation_ok_ = false; |
465 } | 465 } |
466 return next_virtual_register_++; | 466 return next_virtual_register_++; |
467 } | 467 } |
468 | 468 |
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591 const char* RegisterName(int allocation_index); | 591 const char* RegisterName(int allocation_index); |
592 | 592 |
593 inline bool IsGapAt(int index); | 593 inline bool IsGapAt(int index); |
594 | 594 |
595 inline LInstruction* InstructionAt(int index); | 595 inline LInstruction* InstructionAt(int index); |
596 | 596 |
597 inline LGap* GapAt(int index); | 597 inline LGap* GapAt(int index); |
598 | 598 |
599 Zone* zone_; | 599 Zone* zone_; |
600 | 600 |
601 LChunk* chunk_; | 601 LPlatformChunk* chunk_; |
602 | 602 |
603 // During liveness analysis keep a mapping from block id to live_in sets | 603 // During liveness analysis keep a mapping from block id to live_in sets |
604 // for blocks already analyzed. | 604 // for blocks already analyzed. |
605 ZoneList<BitVector*> live_in_sets_; | 605 ZoneList<BitVector*> live_in_sets_; |
606 | 606 |
607 // Liveness analysis results. | 607 // Liveness analysis results. |
608 ZoneList<LiveRange*> live_ranges_; | 608 ZoneList<LiveRange*> live_ranges_; |
609 | 609 |
610 // Lists of live ranges | 610 // Lists of live ranges |
611 EmbeddedVector<LiveRange*, Register::kNumAllocatableRegisters> | 611 EmbeddedVector<LiveRange*, Register::kNumAllocatableRegisters> |
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632 // Indicates success or failure during register allocation. | 632 // Indicates success or failure during register allocation. |
633 bool allocation_ok_; | 633 bool allocation_ok_; |
634 | 634 |
635 DISALLOW_COPY_AND_ASSIGN(LAllocator); | 635 DISALLOW_COPY_AND_ASSIGN(LAllocator); |
636 }; | 636 }; |
637 | 637 |
638 | 638 |
639 } } // namespace v8::internal | 639 } } // namespace v8::internal |
640 | 640 |
641 #endif // V8_LITHIUM_ALLOCATOR_H_ | 641 #endif // V8_LITHIUM_ALLOCATOR_H_ |
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