//===-- llvm/Assembly/AutoUpgrade.h - AutoUpgrade Helpers --------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer is distributed under the University 
// of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//  These functions are implemented by the lib/VMCore/AutoUpgrade.cpp.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_ASSEMBLY_AUTOUPGRADE_H
#define LLVM_ASSEMBLY_AUTOUPGRADE_H

#include <string>

namespace llvm {
  class Function;
  class CallInst;

  /// This function determines if the \p Name provides is a name for which the
  /// auto-upgrade to a non-overloaded name applies.
  /// @returns True if the function name is upgradeable, false otherwise.
  /// @brief Determine if a name is an upgradeable intrinsic name.
  bool IsUpgradeableIntrinsicName(const std::string& Name);

  /// This function inspects the Function \p F to see if it is an old overloaded
  /// intrinsic. If it is, the Function's name is changed to add a suffix that
  /// indicates the kind of arguments or result that it accepts. In LLVM release
  /// 1.7, the overloading of intrinsic functions was replaced with separate
  /// functions for each of the various argument sizes. This function implements
  /// the auto-upgrade feature from the old overloaded names to the new
  /// non-overloaded names. 
  /// @param F The Function to potentially auto-upgrade.
  /// @returns A corrected version of F, or 0 if no change necessary
  /// @brief Remove overloaded intrinsic function names.
  Function* UpgradeIntrinsicFunction(Function* F);

  /// This function inspects the CallInst \p CI to see if it is a call to an
  /// old overloaded intrinsic. If it is, the CallInst's name is changed to add
  /// a suffix that indicates the kind of arguments or result that it accepts.
  /// In LLVM 1.7, the overloading of intrinsic functions was replaced with
  /// separate functions for each of the various argument sizes. This function
  /// implements the auto-upgrade feature from old overloaded names to the new
  /// non-overloaded names.
  /// @param CI The CallInst to potentially auto-upgrade.
  /// @returns True if the call was upgraded, false otherwise.
  /// @brief Replace overloaded intrinsic function calls.
  CallInst* UpgradeIntrinsicCall(CallInst* CI);

  bool UpgradeCallsToIntrinsic(Function* F);

} // End llvm namespace

#endif