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// 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_CRANKSHAFT_LITHIUM_CODEGEN_H_
#define V8_CRANKSHAFT_LITHIUM_CODEGEN_H_
#include "src/bailout-reason.h"
#include "src/deoptimizer.h"
#include "src/source-position-table.h"
namespace v8 {
namespace internal {
class CompilationInfo;
class HGraph;
class LChunk;
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;
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;
SourcePositionTableBuilder* source_position_table_builder() {
return &source_position_table_builder_;
}
void PRINTF_FORMAT(2, 3) Comment(const char* format, ...);
void DeoptComment(const Deoptimizer::DeoptInfo& deopt_info);
static Deoptimizer::DeoptInfo MakeDeoptInfo(LInstruction* instr,
DeoptimizeReason deopt_reason,
int deopt_id);
bool GenerateBody();
virtual void GenerateBodyInstructionPre(LInstruction* instr) {}
virtual void GenerateBodyInstructionPost(LInstruction* instr) {}
virtual void EnsureSpaceForLazyDeopt(int space_needed) = 0;
void RecordAndWritePosition(int position);
int GetNextEmittedBlock() const;
void WriteTranslationFrame(LEnvironment* environment,
Translation* translation);
int DefineDeoptimizationLiteral(Handle<Object> literal);
void PopulateDeoptimizationData(Handle<Code> code);
void PopulateDeoptimizationLiteralsWithInlinedFunctions();
// 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<LEnvironment*> deoptimizations_;
ZoneList<Handle<Object> > deoptimization_literals_;
TranslationBuffer translations_;
int inlined_function_count_;
int last_lazy_deopt_pc_;
int osr_pc_offset_;
SourcePositionTableBuilder source_position_table_builder_;
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 internal
} // namespace v8
#endif // V8_CRANKSHAFT_LITHIUM_CODEGEN_H_
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