simplify_cfg.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 "core/pass.h"
 
class Func;
 
 
 
class SimplifyCfgPass final : public Pass {
public:
  static const char *kPassID;
 
  SimplifyCfgPass(PassManager *passManager) : Pass(passManager) {}
 
  bool Run(Prog &prog) override;
 
  const char *GetPassName() const override;
 
private:
  bool EliminateConditionalJumps(Func &func);
  bool EliminatePhiBlocks(Func &func);
  bool ThreadJumps(Func &func);
  bool FoldBranches(Func &func);
  bool RemoveSinglePhis(Func &func);
  bool MergeIntoPredecessor(Func &func);
 
private:
  bool Run(Func &func);
};