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3a18b19a03
names. This also changes the default to allow all of "$_." in addition to letters and numbers as symbol names. If you don't want this, use markCharUnacceptable to remove one of these or markCharAcceptable to add to the set. This corresponds with what GAS accepts by default. llvm-svn: 24291
107 lines
3.6 KiB
C++
107 lines
3.6 KiB
C++
//===-- llvm/Support/Mangler.h - Self-contained name mangler ----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Unified name mangler for various backends.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_MANGLER_H
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#define LLVM_SUPPORT_MANGLER_H
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#include <map>
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#include <set>
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#include <string>
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namespace llvm {
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class Type;
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class Module;
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class Value;
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class GlobalValue;
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class Mangler {
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/// Prefix - This string is added to each symbol that is emitted, unless the
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/// symbol is marked as not needing this prefix.
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const char *Prefix;
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/// UseQuotes - If this is set, the target accepts global names in quotes,
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/// e.g. "foo bar" is a legal name. This syntax is used instead of escaping
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/// the space character. By default, this is false.
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bool UseQuotes;
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/// Memo - This is used to remember the name that we assign a value.
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///
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std::map<const Value*, std::string> Memo;
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/// Count - This simple counter is used to unique value names.
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///
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unsigned Count;
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/// TypeMap - If the client wants us to unique types, this keeps track of the
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/// current assignments and TypeCounter keeps track of the next id to assign.
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std::map<const Type*, unsigned> TypeMap;
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unsigned TypeCounter;
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/// This keeps track of which global values have had their names
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/// mangled in the current module.
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///
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std::set<const GlobalValue*> MangledGlobals;
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/// AcceptableChars - This bitfield contains a one for each character that is
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/// allowed to be part of an unmangled name.
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unsigned AcceptableChars[256/32];
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public:
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// Mangler ctor - if a prefix is specified, it will be prepended onto all
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// symbols.
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Mangler(Module &M, const char *Prefix = "");
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/// setUseQuotes - If UseQuotes is set to true, this target accepts quoted
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/// strings for assembler labels.
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void setUseQuotes(bool Val) { UseQuotes = Val; }
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/// Acceptable Characters - This allows the target to specify which characters
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/// are acceptable to the assembler without being mangled. By default we
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/// allow letters, numbers, '_', '$', and '.', which is what GAS accepts.
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void markCharAcceptable(unsigned char X) {
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AcceptableChars[X/32] |= 1 << (X&31);
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}
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void markCharUnacceptable(unsigned char X) {
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AcceptableChars[X/32] &= ~(1 << (X&31));
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}
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bool isCharAcceptable(unsigned char X) const {
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return (AcceptableChars[X/32] & (1 << (X&31))) != 0;
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}
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/// getTypeID - Return a unique ID for the specified LLVM type.
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///
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unsigned getTypeID(const Type *Ty);
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/// getValueName - Returns the mangled name of V, an LLVM Value,
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/// in the current module.
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///
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std::string getValueName(const GlobalValue *V);
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std::string getValueName(const Value *V);
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/// makeNameProper - We don't want identifier names with ., space, or
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/// - in them, so we mangle these characters into the strings "d_",
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/// "s_", and "D_", respectively. This is a very simple mangling that
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/// doesn't guarantee unique names for values. getValueName already
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/// does this for you, so there's no point calling it on the result
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/// from getValueName.
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///
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std::string makeNameProper(const std::string &x, const char *Prefix = "");
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private:
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void InsertName(GlobalValue *GV, std::map<std::string, GlobalValue*> &Names);
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};
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} // End llvm namespace
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#endif // LLVM_SUPPORT_MANGLER_H
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