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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76456 91177308-0d34-0410-b5e6-96231b3b80d8
112 lines
4.0 KiB
C++
112 lines
4.0 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 is distributed under the University of Illinois Open Source
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// 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 "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SmallPtrSet.h"
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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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public:
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enum ManglerPrefixTy {
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Default, ///< Emit default string before each symbol.
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Private, ///< Emit "private" prefix before each symbol.
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LinkerPrivate ///< Emit "linker private" prefix before each symbol.
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};
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private:
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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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/// PrivatePrefix - This string is emitted before each symbol with private
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/// linkage.
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const char *PrivatePrefix;
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/// LinkerPrivatePrefix - This string is emitted before each symbol with
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/// "linker_private" linkage.
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const char *LinkerPrivatePrefix;
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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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/// AnonGlobalIDs - We need to give global values the same name every time
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/// they are mangled. This keeps track of the number we give to anonymous
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/// ones.
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///
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DenseMap<const GlobalValue*, unsigned> AnonGlobalIDs;
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/// NextAnonGlobalID - This simple counter is used to unique value names.
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///
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unsigned NextAnonGlobalID;
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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 = "", const char *privatePrefix = "",
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const char *linkerPrivatePrefix = "");
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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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/// getMangledName - Returns the mangled name of V, an LLVM Value,
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/// in the current module. If 'Suffix' is specified, the name ends with the
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/// specified suffix. If 'ForcePrivate' is specified, the label is specified
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/// to have a private label prefix.
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///
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std::string getMangledName(const GlobalValue *V, const char *Suffix = "",
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bool ForcePrivate = false);
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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,
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ManglerPrefixTy PrefixTy = Mangler::Default);
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};
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} // End llvm namespace
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#endif // LLVM_SUPPORT_MANGLER_H
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