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8e0f67dcec
Before this patch any program that wanted to know the final symbol name of a GlobalValue had to link with Target. This patch implements a compromise solution where the mangler uses DataLayout. This way, any tool that already links with Target (llc, clang) gets the exact behavior as before and new IR files can be mangled without linking with Target. With this patch the mangler is constructed with just a DataLayout and DataLayout is extended to include the information the Mangler needs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198438 91177308-0d34-0410-b5e6-96231b3b80d8
66 lines
2.1 KiB
C++
66 lines
2.1 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 DataLayout;
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class GlobalValue;
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class MCContext;
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template <typename T> class SmallVectorImpl;
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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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const DataLayout *DL;
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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(const DataLayout *DL) : DL(DL), NextAnonGlobalID(1) {}
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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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/// 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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};
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} // End llvm namespace
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#endif // LLVM_TARGET_MANGLER_H
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