// Copyright 2013 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef V8_LITHIUM_CODEGEN_H_ #define V8_LITHIUM_CODEGEN_H_ #include "src/v8.h" #include "src/bailout-reason.h" #include "src/compiler.h" #include "src/deoptimizer.h" namespace v8 { namespace internal { class LEnvironment; class LInstruction; class LPlatformChunk; class LCodeGenBase BASE_EMBEDDED { public: LCodeGenBase(LChunk* chunk, MacroAssembler* assembler, CompilationInfo* info); virtual ~LCodeGenBase() {} // Simple accessors. MacroAssembler* masm() const { return masm_; } CompilationInfo* info() const { return info_; } Isolate* isolate() const { return info_->isolate(); } Factory* factory() const { return isolate()->factory(); } Heap* heap() const { return isolate()->heap(); } Zone* zone() const { return zone_; } LPlatformChunk* chunk() const { return chunk_; } HGraph* graph() const; void FPRINTF_CHECKING Comment(const char* format, ...); void DeoptComment(const Deoptimizer::DeoptInfo& deopt_info); static Deoptimizer::DeoptInfo MakeDeoptInfo( LInstruction* instr, Deoptimizer::DeoptReason deopt_reason); bool GenerateBody(); virtual void GenerateBodyInstructionPre(LInstruction* instr) {} virtual void GenerateBodyInstructionPost(LInstruction* instr) {} virtual void EnsureSpaceForLazyDeopt(int space_needed) = 0; virtual void RecordAndWritePosition(int position) = 0; int GetNextEmittedBlock() const; void RegisterWeakObjectsInOptimizedCode(Handle<Code> code); void WriteTranslationFrame(LEnvironment* environment, Translation* translation); int DefineDeoptimizationLiteral(Handle<Object> literal); // Check that an environment assigned via AssignEnvironment is actually being // used. Redundant assignments keep things alive longer than necessary, and // consequently lead to worse code, so it's important to minimize this. void CheckEnvironmentUsage(); protected: enum Status { UNUSED, GENERATING, DONE, ABORTED }; LPlatformChunk* const chunk_; MacroAssembler* const masm_; CompilationInfo* const info_; Zone* zone_; Status status_; int current_block_; int current_instruction_; const ZoneList<LInstruction*>* instructions_; ZoneList<Handle<Object> > deoptimization_literals_; int last_lazy_deopt_pc_; bool is_unused() const { return status_ == UNUSED; } bool is_generating() const { return status_ == GENERATING; } bool is_done() const { return status_ == DONE; } bool is_aborted() const { return status_ == ABORTED; } void Abort(BailoutReason reason); void Retry(BailoutReason reason); // Methods for code dependencies. void AddDeprecationDependency(Handle<Map> map); void AddStabilityDependency(Handle<Map> map); }; } } // namespace v8::internal #endif // V8_LITHIUM_CODEGEN_H_