1 //===-- llvm/Support/Mangler.h - Self-contained name mangler ----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Unified name mangler for various backends.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_SUPPORT_MANGLER_H
15 #define LLVM_SUPPORT_MANGLER_H
28 /// Prefix - This string is added to each symbol that is emitted, unless the
29 /// symbol is marked as not needing this prefix.
32 /// UseQuotes - If this is set, the target accepts global names in quotes,
33 /// e.g. "foo bar" is a legal name. This syntax is used instead of escaping
34 /// the space character. By default, this is false.
37 /// Memo - This is used to remember the name that we assign a value.
39 std::map<const Value*, std::string> Memo;
41 /// Count - This simple counter is used to unique value names.
45 /// TypeMap - If the client wants us to unique types, this keeps track of the
46 /// current assignments and TypeCounter keeps track of the next id to assign.
47 std::map<const Type*, unsigned> TypeMap;
50 /// This keeps track of which global values have had their names
51 /// mangled in the current module.
53 std::set<const GlobalValue*> MangledGlobals;
55 /// AcceptableChars - This bitfield contains a one for each character that is
56 /// allowed to be part of an unmangled name.
57 unsigned AcceptableChars[256/32];
60 // Mangler ctor - if a prefix is specified, it will be prepended onto all
62 Mangler(Module &M, const char *Prefix = "");
64 /// setUseQuotes - If UseQuotes is set to true, this target accepts quoted
65 /// strings for assembler labels.
66 void setUseQuotes(bool Val) { UseQuotes = Val; }
68 /// Acceptable Characters - This allows the target to specify which characters
69 /// are acceptable to the assembler without being mangled. By default we
70 /// allow letters, numbers, '_', '$', and '.', which is what GAS accepts.
71 void markCharAcceptable(unsigned char X) {
72 AcceptableChars[X/32] |= 1 << (X&31);
74 void markCharUnacceptable(unsigned char X) {
75 AcceptableChars[X/32] &= ~(1 << (X&31));
77 bool isCharAcceptable(unsigned char X) const {
78 return (AcceptableChars[X/32] & (1 << (X&31))) != 0;
81 /// getTypeID - Return a unique ID for the specified LLVM type.
83 unsigned getTypeID(const Type *Ty);
85 /// getValueName - Returns the mangled name of V, an LLVM Value,
86 /// in the current module.
88 std::string getValueName(const GlobalValue *V);
89 std::string getValueName(const Value *V);
91 /// makeNameProper - We don't want identifier names with ., space, or
92 /// - in them, so we mangle these characters into the strings "d_",
93 /// "s_", and "D_", respectively. This is a very simple mangling that
94 /// doesn't guarantee unique names for values. getValueName already
95 /// does this for you, so there's no point calling it on the result
96 /// from getValueName.
98 std::string makeNameProper(const std::string &x, const char *Prefix = "");
101 void InsertName(GlobalValue *GV, std::map<std::string, GlobalValue*> &Names);
104 } // End llvm namespace
106 #endif // LLVM_SUPPORT_MANGLER_H