Linkage.hpp

Go to the documentation of this file.

/*
 * Copyright 2018 Nico Reißmann <nico.reissmann@gmail.com>
 * See COPYING for terms of redistribution.
 */
 
#ifndef JLM_LLVM_IR_LINKAGE_HPP
#define JLM_LLVM_IR_LINKAGE_HPP
 
#include <string_view>
 
namespace jlm::llvm
{
 
enum class Linkage
{
  externalLinkage,
  availableExternallyLinkage,
  linkOnceAnyLinkage,
  linkOnceOdrLinkage,
  weakAnyLinkage,
  weakOdrLinkage,
  appendingLinkage,
  // internal symbols are only included in the module's own local symbol table.
  internalLinkage,
  // private linkage is excluded from all symbol tables.
  privateLinkage,
  externalWeakLinkage,
  commonLinkage
};
 
[[nodiscard]] inline bool
isDiscardableIfUnused(const Linkage linkage)
{
  switch (linkage)
  {
  case Linkage::availableExternallyLinkage:
  case Linkage::linkOnceAnyLinkage:
  case Linkage::linkOnceOdrLinkage:
  case Linkage::internalLinkage:
  case Linkage::privateLinkage:
    return true;
  default:
    return false;
  }
}
 
[[nodiscard]] inline bool
isPrivateOrInternal(const Linkage linkage)
{
  return linkage == Linkage::privateLinkage || linkage == Linkage::internalLinkage;
}
 
[[nodiscard]] std::string_view
linkageToString(Linkage linkage);
 
[[nodiscard]] Linkage
linkageFromString(std::string_view stringValue);
}
 
#endif