emitter.h

// This file if part of the llir-opt project.
// Licensing information can be found in the LICENSE file.
// (C) 2018 Nandor Licker. All rights reserved.
 
#pragma once
 
#include <fstream>
#include <string>
 
#include <llvm/Analysis/TargetLibraryInfo.h>
#include <llvm/IR/LLVMContext.h>
#include <llvm/Support/raw_ostream.h>
 
#include "core/target.h"
 
class Prog;
class ISel;
class AnnotPrinter;
 
 
 
class Emitter {
public:
  Emitter(
      const std::string &path,
      llvm::raw_fd_ostream &os,
      Target &target
  );
 
  virtual ~Emitter();
 
  void EmitASM(const Prog &prog);
 
  void EmitOBJ(const Prog &prog);
 
private:
  void Emit(llvm::CodeGenFileType type, const Prog &prog);
 
protected:
  virtual llvm::LLVMTargetMachine &GetTargetMachine() = 0;
  virtual ISel *CreateISelPass(
      const Prog &prog,
      llvm::CodeGenOpt::Level opt
  ) = 0;
  virtual AnnotPrinter *CreateAnnotPass(
      llvm::MCContext &mcCtx,
      llvm::MCStreamer &mcStreamer,
      const llvm::TargetLoweringObjectFile &objInfo,
      ISel &isel
  ) = 0;
  virtual llvm::ModulePass *CreateRuntimePass(
      const Prog &prog,
      llvm::MCContext &mcCtx,
      llvm::MCStreamer &mcStreamer,
      const llvm::TargetLoweringObjectFile &objInfo
  ) = 0;
 
protected:
  Target &target_;
  const std::string path_;
  llvm::raw_fd_ostream &os_;
  const std::string triple_;
  bool shared_;
  llvm::LLVMContext context_;
};