1//===-- llvm/IR/Mangler.h - Self-contained name mangler ---------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Unified name mangler for various backends.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_IR_MANGLER_H
14#define LLVM_IR_MANGLER_H
15
16#include "llvm/ADT/DenseMap.h"
17
18namespace llvm {
19
20class DataLayout;
21class GlobalValue;
22template <typename T> class SmallVectorImpl;
23class Triple;
24class Twine;
25class raw_ostream;
26
27class Mangler {
28 /// We need to give global values the same name every time they are mangled.
29 /// This keeps track of the number we give to anonymous ones.
30 mutable DenseMap<const GlobalValue*, unsigned> AnonGlobalIDs;
31
32public:
33 /// Print the appropriate prefix and the specified global variable's name.
34 /// If the global variable doesn't have a name, this fills in a unique name
35 /// for the global.
36 void getNameWithPrefix(raw_ostream &OS, const GlobalValue *GV,
37 bool CannotUsePrivateLabel) const;
38 void getNameWithPrefix(SmallVectorImpl<char> &OutName, const GlobalValue *GV,
39 bool CannotUsePrivateLabel) const;
40
41 /// Print the appropriate prefix and the specified name as the global variable
42 /// name. GVName must not be empty.
43 static void getNameWithPrefix(raw_ostream &OS, const Twine &GVName,
44 const DataLayout &DL);
45 static void getNameWithPrefix(SmallVectorImpl<char> &OutName,
46 const Twine &GVName, const DataLayout &DL);
47};
48
49void emitLinkerFlagsForGlobalCOFF(raw_ostream &OS, const GlobalValue *GV,
50 const Triple &TT, Mangler &Mangler);
51
52void emitLinkerFlagsForUsedCOFF(raw_ostream &OS, const GlobalValue *GV,
53 const Triple &T, Mangler &M);
54
55} // End llvm namespace
56
57#endif
58