CSE2410 Fall 2014 Bounce

// Copyright 2013 the V8 project authors. All rights reserved.

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

//

//     * Redistributions of source code must retain the above copyright

//       notice, this list of conditions and the following disclaimer.

//     * Redistributions in binary form must reproduce the above

//       copyright notice, this list of conditions and the following

//       disclaimer in the documentation and/or other materials provided

//       with the distribution.

//     * Neither the name of Google Inc. nor the names of its

//       contributors may be used to endorse or promote products derived

//       from this software without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef V8_LITHIUM_CODEGEN_H_

#define V8_LITHIUM_CODEGEN_H_

#include "v8.h"

#include "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;

 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; }

};

} }  // namespace v8::internal

#endif  // V8_LITHIUM_CODEGEN_H_