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fdbea5107b
32-bit symbols have "_" as global prefix, but when forming the name of COMDAT sections this prefix is ignored. The current behavior assumes that this prefix is always present which is not the case for 64-bit and names are truncated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187356 91177308-0d34-0410-b5e6-96231b3b80d8
75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
//===-- llvm/Target/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_TARGET_MANGLER_H
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#define LLVM_TARGET_MANGLER_H
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#include "llvm/ADT/DenseMap.h"
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namespace llvm {
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class GlobalValue;
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class MCContext;
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class MCSymbol;
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template <typename T> class SmallVectorImpl;
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class TargetMachine;
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class Twine;
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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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MCContext &Context;
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const TargetMachine *TM;
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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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public:
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Mangler(MCContext &Context, const TargetMachine *TM)
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: Context(Context), TM(TM), NextAnonGlobalID(1) {}
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/// getSymbol - Return the MCSymbol for the specified global value. This
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/// symbol is the main label that is the address of the global.
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MCSymbol *getSymbol(const GlobalValue *GV);
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/// getNameWithPrefix - Fill OutName with the name of the appropriate prefix
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/// and the specified global variable's name. If the global variable doesn't
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/// have a name, this fills in a unique name for the global.
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void getNameWithPrefix(SmallVectorImpl<char> &OutName, const GlobalValue *GV,
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bool isImplicitlyPrivate, bool UseGlobalPrefix = true);
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/// getNameWithPrefix - Fill OutName with the name of the appropriate prefix
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/// and the specified name as the global variable name. GVName must not be
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/// empty.
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void getNameWithPrefix(SmallVectorImpl<char> &OutName, const Twine &GVName,
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ManglerPrefixTy PrefixTy = Mangler::Default,
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bool UseGlobalPrefix = true);
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};
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} // End llvm namespace
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#endif // LLVM_TARGET_MANGLER_H
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