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//===-- llvm/IR/Mangler.h - Self-contained name mangler ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Unified name mangler for various backends.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_IR_MANGLER_H
#define LLVM_IR_MANGLER_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/raw_ostream.h"
namespace llvm {
class DataLayout;
class GlobalValue;
template <typename T> class SmallVectorImpl;
class Twine;
class Mangler {
public:
enum ManglerPrefixTy {
Default, ///< Emit default string before each symbol.
Private, ///< Emit "private" prefix before each symbol.
LinkerPrivate ///< Emit "linker private" prefix before each symbol.
};
private:
const DataLayout *DL;
/// AnonGlobalIDs - We need to give global values the same name every time
/// they are mangled. This keeps track of the number we give to anonymous
/// ones.
///
mutable DenseMap<const GlobalValue*, unsigned> AnonGlobalIDs;
/// NextAnonGlobalID - This simple counter is used to unique value names.
///
mutable unsigned NextAnonGlobalID;
public:
Mangler(const DataLayout *DL) : DL(DL), NextAnonGlobalID(1) {}
/// Print the appropriate prefix and the specified global variable's name.
/// If the global variable doesn't have a name, this fills in a unique name
/// for the global.
void getNameWithPrefix(raw_ostream &OS, const GlobalValue *GV,
bool CannotUsePrivateLabel) const;
void getNameWithPrefix(SmallVectorImpl<char> &OutName, const GlobalValue *GV,
bool CannotUsePrivateLabel) const;
/// Print the appropriate prefix and the specified name as the global variable
/// name. GVName must not be empty.
void getNameWithPrefix(raw_ostream &OS, const Twine &GVName,
ManglerPrefixTy PrefixTy = Mangler::Default) const;
void getNameWithPrefix(SmallVectorImpl<char> &OutName, const Twine &GVName,
ManglerPrefixTy PrefixTy = Mangler::Default) const;
};
} // namespace llvm
#endif
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