tools/lto/LTOCodeGenerator.h

   1 //===-LTOCodeGenerator.h - LLVM Link Time Optimizer -----------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file declares the LTOCodeGenerator class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14
  15 #ifndef LTO_CODE_GENERATOR_H
  16 #define LTO_CODE_GENERATOR_H
  17
  18 #include "llvm/Linker.h"
  19 #include "llvm/ADT/StringMap.h"
  20
  21 #include <string>
  22
  23
  24 //
  25 // C++ class which implements the opaque lto_code_gen_t
  26 //
  27 class LTOCodeGenerator {
  28 public:
  29     static const char*        getVersionString();
  30
  31                             LTOCodeGenerator();
  32                             ~LTOCodeGenerator();
  33
  34     bool                addModule(class LTOModule*, std::string& errMsg);
  35     bool                setDebugInfo(lto_debug_model, std::string& errMsg);
  36     bool                setCodePICModel(lto_codegen_model, std::string& errMsg);
  37     void                addMustPreserveSymbol(const char* sym);
  38     bool                writeMergedModules(const char* path,
  39                                                            std::string& errMsg);
  40     const void*         compile(size_t* length, std::string& errMsg);
  41
  42 private:
  43     bool                generateAssemblyCode(std::ostream& out,
  44                                                         std::string& errMsg);
  45     bool                assemble(const std::string& asmPath,
  46                             const std::string& objPath, std::string& errMsg);
  47     void                applyScopeRestrictions();
  48     bool                determineTarget(std::string& errMsg);
  49
  50     typedef llvm::StringMap<uint8_t> StringSet;
  51
  52     llvm::Linker                _linker;
  53     llvm::TargetMachine*        _target;
  54     bool                        _emitDwarfDebugInfo;
  55     bool                        _scopeRestrictionsDone;
  56     lto_codegen_model           _codeModel;
  57     StringSet                   _mustPreserveSymbols;
  58     llvm::MemoryBuffer*         _nativeObjectFile;
  59 };
  60
  61 #endif // LTO_CODE_GENERATOR_H
  62