text: //===--- CodeGenOptions.h ---------------------------------------*- C++ -*-===//
  //
  //                     The LLVM Compiler Infrastructure
  //
  // This file is distributed under the University of Illinois Open Source
  // License. See LICENSE.TXT for details.
  //
  //===----------------------------------------------------------------------===//
  //
  //  This file defines the CodeGenOptions interface.
  //
  //===----------------------------------------------------------------------===//
  
  #ifndef LLVM_CLANG_FRONTEND_CODEGENOPTIONS_H
  #define LLVM_CLANG_FRONTEND_CODEGENOPTIONS_H
  
  #include <string>
  #include <vector>
  
  namespace clang {
  
  /// \brief Bitfields of CodeGenOptions, split out from CodeGenOptions to ensure
  /// that this large collection of bitfields is a trivial class type.
  class CodeGenOptionsBase {
  public:
  #define CODEGENOPT(Name, Bits, Default) unsigned Name : Bits;
  #define ENUM_CODEGENOPT(Name, Type, Bits, Default)
  #include "clang/Frontend/CodeGenOptions.def"
  
  protected:
  #define CODEGENOPT(Name, Bits, Default)
  #define ENUM_CODEGENOPT(Name, Type, Bits, Default) unsigned Name : Bits;
  #include "clang/Frontend/CodeGenOptions.def"
  };
  
  /// CodeGenOptions - Track various options which control how the code
  /// is optimized and passed to the backend.
  class CodeGenOptions : public CodeGenOptionsBase {
  public:
    enum InliningMethod {
      NoInlining,         // Perform no inlining whatsoever.
      NormalInlining,     // Use the standard function inlining pass.
      OnlyAlwaysInlining  // Only run the always inlining pass.
    };
  
    enum ObjCDispatchMethodKind {
      Legacy = 0,
      NonLegacy = 1,
      Mixed = 2
    };
  
    enum DebugInfoKind {
      NoDebugInfo,          // Don't generate debug info.
      DebugLineTablesOnly,  // Emit only debug info necessary for generating
                            // line number tables (-gline-tables-only).
      LimitedDebugInfo,     // Limit generated debug info to reduce size
                            // (-flimit-debug-info).
      FullDebugInfo         // Generate complete debug info.
    };
  
    enum TLSModel {
      GeneralDynamicTLSModel,
      LocalDynamicTLSModel,
      InitialExecTLSModel,
      LocalExecTLSModel
    };
  
    /// The code model to use (-mcmodel).
    std::string CodeModel;
  
    /// The filename with path we use for coverage files. The extension will be
    /// replaced.
    std::string CoverageFile;
  
    /// Enable additional debugging information.
    std::string DebugPass;
  
    /// The string to embed in debug information as the current working directory.
    std::string DebugCompilationDir;
  
    /// The string to embed in the debug information for the compile unit, if
    /// non-empty.
    std::string DwarfDebugFlags;
  
    /// The ABI to use for passing floating point arguments.
    std::string FloatABI;
  
    /// The float precision limit to use, if non-empty.
    std::string LimitFloatPrecision;
  
    /// The name of the bitcode file to link before optzns.
    std::string LinkBitcodeFile;
  
    /// The user provided name for the "main file", if non-empty. This is useful
    /// in situations where the input file name does not match the original input
    /// file, for example with -save-temps.
    std::string MainFileName;
  
    /// The name of the relocation model to use.
    std::string RelocationModel;
  
    /// If not an empty string, trap intrinsics are lowered to calls to this
    /// function instead of to trap instructions.
    std::string TrapFuncName;
  
    /// A list of command-line options to forward to the LLVM backend.
    std::vector<std::string> BackendOptions;
  
  public:
    // Define accessors/mutators for code generation options of enumeration type.
  #define CODEGENOPT(Name, Bits, Default)
  #define ENUM_CODEGENOPT(Name, Type, Bits, Default) \
    Type get##Name() const { return static_cast<Type>(Name); } \
    void set##Name(Type Value) { Name = static_cast<unsigned>(Value); }
  #include "clang/Frontend/CodeGenOptions.def"
  
    CodeGenOptions() {
  #define CODEGENOPT(Name, Bits, Default) Name = Default;
  #define ENUM_CODEGENOPT(Name, Type, Bits, Default) \
    set##Name(Default);
  #include "clang/Frontend/CodeGenOptions.def"
  
      RelocationModel = "pic";
    }
  };
  
  }  // end namespace clang
  
  #endif
  