tools/lto2/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
  22
  23 //
  24 // C++ class which implements the opaque lto_code_gen_t
  25 //
  26 class LTOCodeGenerator {
  27 public:
  28     static const char*        getVersionString();
  29
  30                             LTOCodeGenerator();
  31                             ~LTOCodeGenerator();
  32
  33     bool                addModule(class LTOModule*, std::string& errMsg);
  34     bool                setDebugInfo(lto_debug_model, std::string& errMsg);
  35     bool                setCodePICModel(lto_codegen_model, std::string& errMsg);
  36     void                addMustPreserveSymbol(const char* sym);
  37     bool                writeMergedModules(const char* path, std::string& errMsg);
  38     void*               compile(size_t* length, std::string& errMsg);
  39
  40 private:
  41     bool                generateAssemblyCode(std::ostream& out,
  42                                                         std::string& errMsg);
  43     bool                assemble(const std::string& asmPath,
  44                             const std::string& objPath, std::string& errMsg);
  45     void                applyScopeRestrictions();
  46     bool                determineTarget(std::string& errMsg);
  47
  48     typedef llvm::StringMap<uint8_t> StringSet;
  49
  50     llvm::Linker                _linker;
  51     llvm::TargetMachine*        _target;
  52     bool                        _emitDwarfDebugInfo;
  53     bool                        _scopeRestrictionsDone;
  54     lto_codegen_model           _codeModel;
  55     StringSet                   _mustPreserveSymbols;
  56 };
  57
  58 #endif // LTO_CODE_GENERATOR_H
  59