init_path.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 <unordered_set>
 
class Func;
class Block;
class CallGraph;
 
 
 
class InitPath final {
public:
  InitPath(Prog &prog, Func *entry);
 
  bool operator[] (Block &block) const
  {
    return executedAtMostOnce_.count(&block) == 1;
  }
 
private:
  bool IsSingleUse(const Func *f);
 
private:
  std::unordered_set<Block *> executedAtMostOnce_;
  std::unordered_map<const Func *, bool> singleUse_;
};