| // 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/compiler.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| 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, ...); |
| |
| 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); |
| |
| // 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_; |
| 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); |
| |
| // Methods for code dependencies. |
| void AddDeprecationDependency(Handle<Map> map); |
| void AddStabilityDependency(Handle<Map> map); |
| }; |
| |
| |
| } } // namespace v8::internal |
| |
| #endif // V8_LITHIUM_CODEGEN_H_ |