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107 lines
4.0 KiB
C++
107 lines
4.0 KiB
C++
//===-LTOModule.h - LLVM Link Time Optimizer ------------------------------===//
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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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// This file declares the LTOModule class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LTO_MODULE_H
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#define LTO_MODULE_H
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#include "llvm/Module.h"
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#include "llvm/ADT/OwningPtr.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm-c/lto.h"
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#include <vector>
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#include <string>
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// forward references to llvm classes
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namespace llvm {
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class Mangler;
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class MemoryBuffer;
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class GlobalValue;
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class Value;
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class Function;
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}
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//
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// C++ class which implements the opaque lto_module_t
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//
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class LTOModule {
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public:
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static bool isBitcodeFile(const void* mem, size_t length);
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static bool isBitcodeFile(const char* path);
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static bool isBitcodeFileForTarget(const void* mem,
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size_t length, const char* triplePrefix);
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static bool isBitcodeFileForTarget(const char* path,
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const char* triplePrefix);
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static LTOModule* makeLTOModule(const char* path, std::string& errMsg);
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static LTOModule* makeLTOModule(const void* mem, size_t length,
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std::string& errMsg);
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const char* getTargetTriple();
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uint32_t getSymbolCount();
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lto_symbol_attributes getSymbolAttributes(uint32_t index);
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const char* getSymbolName(uint32_t index);
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llvm::Module * getLLVVMModule() { return _module.get(); }
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private:
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LTOModule(llvm::Module* m, llvm::TargetMachine* t);
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void lazyParseSymbols();
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void addDefinedSymbol(llvm::GlobalValue* def,
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llvm::Mangler& mangler,
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bool isFunction);
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void addPotentialUndefinedSymbol(llvm::GlobalValue* decl,
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llvm::Mangler &mangler);
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void findExternalRefs(llvm::Value* value,
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llvm::Mangler& mangler);
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void addDefinedFunctionSymbol(llvm::Function* f,
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llvm::Mangler &mangler);
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void addDefinedDataSymbol(llvm::GlobalValue* v,
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llvm::Mangler &mangler);
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void addAsmGlobalSymbol(const char *);
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static bool isTargetMatch(llvm::MemoryBuffer* memBuffer,
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const char* triplePrefix);
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static LTOModule* makeLTOModule(llvm::MemoryBuffer* buffer,
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std::string& errMsg);
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static llvm::MemoryBuffer* makeBuffer(const void* mem, size_t length);
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typedef llvm::StringMap<uint8_t> StringSet;
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struct NameAndAttributes {
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const char* name;
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lto_symbol_attributes attributes;
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};
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llvm::OwningPtr<llvm::Module> _module;
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llvm::OwningPtr<llvm::TargetMachine> _target;
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bool _symbolsParsed;
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std::vector<NameAndAttributes> _symbols;
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// _defines and _undefines only needed to disambiguate tentative definitions
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StringSet _defines;
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StringSet _undefines;
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};
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extern std::string getFeatureString(const char *TargetTriple);
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#endif // LTO_MODULE_H
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