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 3 // found in the LICENSE file. 4 5 #ifndef V8_COMPILER_MOVE_OPTIMIZER_ 6 #define V8_COMPILER_MOVE_OPTIMIZER_ 7 8 #include "src/compiler/instruction.h" 9 #include "src/zone-containers.h" 10 11 namespace v8 { 12 namespace internal { 13 namespace compiler { 14 15 class MoveOptimizer final { 16 public: 17 MoveOptimizer(Zone* local_zone, InstructionSequence* code); 18 void Run(); 19 20 private: 21 typedef ZoneVector<MoveOperands*> MoveOpVector; 22 typedef ZoneVector<Instruction*> Instructions; 23 code()24 InstructionSequence* code() const { return code_; } local_zone()25 Zone* local_zone() const { return local_zone_; } code_zone()26 Zone* code_zone() const { return code()->zone(); } local_vector()27 MoveOpVector& local_vector() { return local_vector_; } 28 29 void CompressBlock(InstructionBlock* blocke); 30 void CompressMoves(ParallelMove* left, ParallelMove* right); 31 const Instruction* LastInstruction(const InstructionBlock* block) const; 32 void OptimizeMerge(InstructionBlock* block); 33 void FinalizeMoves(Instruction* instr); 34 35 Zone* const local_zone_; 36 InstructionSequence* const code_; 37 Instructions to_finalize_; 38 MoveOpVector local_vector_; 39 40 DISALLOW_COPY_AND_ASSIGN(MoveOptimizer); 41 }; 42 43 } // namespace compiler 44 } // namespace internal 45 } // namespace v8 46 47 #endif // V8_COMPILER_MOVE_OPTIMIZER_ 48