LLVM  10.0.0svn
Mangler.h
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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 #include "llvm/IR/GlobalValue.h"
18 
19 namespace llvm {
20 
21 class DataLayout;
22 template <typename T> class SmallVectorImpl;
23 class Triple;
24 class Twine;
25 class raw_ostream;
26 
27 class 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 
32 public:
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 
50  const Triple &TT, Mangler &Mangler);
51 
53  const Triple &T, Mangler &M);
54 
55 } // End llvm namespace
56 
57 #endif
A parsed version of the target data layout string in and methods for querying it. ...
Definition: DataLayout.h:111
This class represents lattice values for constants.
Definition: AllocatorList.h:23
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
Definition: Twine.h:80
void emitLinkerFlagsForGlobalCOFF(raw_ostream &OS, const GlobalValue *GV, const Triple &TT, Mangler &Mangler)
Definition: Mangler.cpp:184
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:43
void emitLinkerFlagsForUsedCOFF(raw_ostream &OS, const GlobalValue *GV, const Triple &T, Mangler &M)
Definition: Mangler.cpp:215
This class implements an extremely fast bulk output stream that can only output to a stream...
Definition: raw_ostream.h:45
void getNameWithPrefix(raw_ostream &OS, const GlobalValue *GV, bool CannotUsePrivateLabel) const
Print the appropriate prefix and the specified global variable&#39;s name.
Definition: Mangler.cpp:111