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//===-LTOCodeGenerator.h - LLVM Link Time Optimizer -----------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the LTOCodeGenerator class.
//
//===----------------------------------------------------------------------===//
#ifndef LTO_CODE_GENERATOR_H
#define LTO_CODE_GENERATOR_H
#include "llvm-c/lto.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Linker.h"
#include <string>
#include <vector>
namespace llvm {
class LLVMContext;
class GlobalValue;
class Mangler;
class MemoryBuffer;
class TargetMachine;
class raw_ostream;
}
//===----------------------------------------------------------------------===//
/// LTOCodeGenerator - C++ class which implements the opaque lto_code_gen_t
/// type.
///
struct LTOCodeGenerator {
static const char *getVersionString();
LTOCodeGenerator();
~LTOCodeGenerator();
bool addModule(struct LTOModule*, std::string &errMsg);
// @LOCALMOD-BEGIN
// Alternative methods of adding modules, which delay merging modules until
// all modules are available.
void gatherModuleForLinking(struct LTOModule*);
bool linkGatheredModulesAndDispose(std::string &errMsg);
// @LOCALMOD-END
bool setDebugInfo(lto_debug_model, std::string &errMsg);
bool setCodePICModel(lto_codegen_model, std::string &errMsg);
void setCpu(const char* mCpu) { _mCpu = mCpu; }
void addMustPreserveSymbol(const char* sym) {
_mustPreserveSymbols[sym] = 1;
}
bool writeMergedModules(const char *path, std::string &errMsg);
// @LOCALMOD-BEGIN
void setMergedModuleOutputFormat(lto_output_format format);
void setMergedModuleSOName(const char *soname);
void addLibraryDep(const char *lib);
void wrapSymbol(const char *sym);
const char* setSymbolDefVersion(const char *sym, const char *ver,
bool is_default);
const char* setSymbolNeeded(const char *sym, const char *ver,
const char *dynfile);
// @LOCALMOD-END
bool compile_to_file(const char **name, std::string &errMsg);
const void *compile(size_t *length, std::string &errMsg);
void setCodeGenDebugOptions(const char *opts);
private:
bool generateObjectFile(llvm::raw_ostream &out, std::string &errMsg);
void applyScopeRestrictions();
void applyRestriction(llvm::GlobalValue &GV,
std::vector<const char*> &mustPreserveList,
llvm::SmallPtrSet<llvm::GlobalValue*, 8> &asmUsed,
llvm::Mangler &mangler);
bool determineTarget(std::string &errMsg);
typedef llvm::StringMap<uint8_t> StringSet;
llvm::LLVMContext& _context;
llvm::Linker _linker;
llvm::TargetMachine* _target;
bool _emitDwarfDebugInfo;
bool _scopeRestrictionsDone;
lto_codegen_model _codeModel;
StringSet _mustPreserveSymbols;
StringSet _asmUndefinedRefs;
llvm::MemoryBuffer* _nativeObjectFile;
std::vector<char*> _codegenOptions;
std::string _mCpu;
std::string _nativeObjectPath;
// @LOCALMOD
std::vector<LTOModule*> _gatheredModules;
};
#endif // LTO_CODE_GENERATOR_H
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