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Issue 18826002: Turn redundant bounds checks elimination into a proper HPhase. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 5 months ago
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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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296 void MergeRemovableSimulates(); 296 void MergeRemovableSimulates();
297 void InsertRepresentationChanges(); 297 void InsertRepresentationChanges();
298 void MarkDeoptimizeOnUndefined(); 298 void MarkDeoptimizeOnUndefined();
299 void ComputeMinusZeroChecks(); 299 void ComputeMinusZeroChecks();
300 bool ProcessArgumentsObject(); 300 bool ProcessArgumentsObject();
301 void EliminateRedundantPhis(); 301 void EliminateRedundantPhis();
302 void Canonicalize(); 302 void Canonicalize();
303 void OrderBlocks(); 303 void OrderBlocks();
304 void AssignDominators(); 304 void AssignDominators();
305 void SetupInformativeDefinitions(); 305 void SetupInformativeDefinitions();
306 void EliminateRedundantBoundsChecks();
307 void DehoistSimpleArrayIndexComputations(); 306 void DehoistSimpleArrayIndexComputations();
308 void RestoreActualValues(); 307 void RestoreActualValues();
309 void PropagateDeoptimizingMark(); 308 void PropagateDeoptimizingMark();
310 void AnalyzeAndPruneEnvironmentLiveness(); 309 void AnalyzeAndPruneEnvironmentLiveness();
311 310
312 // Returns false if there are phi-uses of the arguments-object 311 // Returns false if there are phi-uses of the arguments-object
313 // which are not supported by the optimizing compiler. 312 // which are not supported by the optimizing compiler.
314 bool CheckArgumentsPhiUses(); 313 bool CheckArgumentsPhiUses();
315 314
316 // Returns false if there are phi-uses of an uninitialized const 315 // Returns false if there are phi-uses of an uninitialized const
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458 void InsertRepresentationChangeForUse(HValue* value, 457 void InsertRepresentationChangeForUse(HValue* value,
459 HValue* use_value, 458 HValue* use_value,
460 int use_index, 459 int use_index,
461 Representation to); 460 Representation to);
462 void InsertRepresentationChangesForValue(HValue* value); 461 void InsertRepresentationChangesForValue(HValue* value);
463 void InferTypes(ZoneList<HValue*>* worklist); 462 void InferTypes(ZoneList<HValue*>* worklist);
464 void InitializeInferredTypes(int from_inclusive, int to_inclusive); 463 void InitializeInferredTypes(int from_inclusive, int to_inclusive);
465 void CheckForBackEdge(HBasicBlock* block, HBasicBlock* successor); 464 void CheckForBackEdge(HBasicBlock* block, HBasicBlock* successor);
466 void SetupInformativeDefinitionsInBlock(HBasicBlock* block); 465 void SetupInformativeDefinitionsInBlock(HBasicBlock* block);
467 void SetupInformativeDefinitionsRecursively(HBasicBlock* block); 466 void SetupInformativeDefinitionsRecursively(HBasicBlock* block);
468 void EliminateRedundantBoundsChecks(HBasicBlock* bb, BoundsCheckTable* table);
469 467
470 Isolate* isolate_; 468 Isolate* isolate_;
471 int next_block_id_; 469 int next_block_id_;
472 HBasicBlock* entry_block_; 470 HBasicBlock* entry_block_;
473 HEnvironment* start_environment_; 471 HEnvironment* start_environment_;
474 ZoneList<HBasicBlock*> blocks_; 472 ZoneList<HBasicBlock*> blocks_;
475 ZoneList<HValue*> values_; 473 ZoneList<HValue*> values_;
476 ZoneList<HPhi*>* phi_list_; 474 ZoneList<HPhi*>* phi_list_;
477 ZoneList<HInstruction*>* uint32_instructions_; 475 ZoneList<HInstruction*>* uint32_instructions_;
478 SetOncePointer<HConstant> undefined_constant_; 476 SetOncePointer<HConstant> undefined_constant_;
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2101 EmbeddedVector<char, 64> filename_; 2099 EmbeddedVector<char, 64> filename_;
2102 HeapStringAllocator string_allocator_; 2100 HeapStringAllocator string_allocator_;
2103 StringStream trace_; 2101 StringStream trace_;
2104 int indent_; 2102 int indent_;
2105 }; 2103 };
2106 2104
2107 2105
2108 } } // namespace v8::internal 2106 } } // namespace v8::internal
2109 2107
2110 #endif // V8_HYDROGEN_H_ 2108 #endif // V8_HYDROGEN_H_
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