tools/llvmc/CompilerDriver.h

   1 //===- CompilerDriver.h - Compiler Driver -----------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file was developed by Reid Spencer and is distributed under the
   6 // University of Illinois Open Source License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file declares the CompilerDriver class which implements the bulk of the
  11 // LLVM Compiler Driver program (llvmc).
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef LLVM_TOOLS_LLVMC_COMPILERDRIVER_H
  16 #define LLVM_TOOLS_LLVMC_COMPILERDRIVER_H
  17
  18 #include <string>
  19 #include <vector>
  20 #include "llvm/System/Program.h"
  21
  22 namespace llvm {
  23   /// This class provides the high level interface to the LLVM Compiler Driver.
  24   /// The driver's purpose is to make it easier for compiler writers and users
  25   /// of LLVM to utilize the compiler toolkits and LLVM toolset by learning only
  26   /// the interface of one program (llvmc).
  27   ///
  28   /// @see llvmc.cpp
  29   /// @brief The interface to the LLVM Compiler Driver.
  30   class CompilerDriver {
  31     /// @name Types
  32     /// @{
  33     public:
  34       /// @brief A vector of strings, used for argument lists
  35       typedef std::vector<std::string> StringVector;
  36
  37       /// @brief A vector of sys::Path, used for path lists
  38       typedef std::vector<sys::Path> PathVector;
  39
  40       /// @brief A table of strings, indexed typically by Phases
  41       typedef std::vector<StringVector> StringTable;
  42
  43       /// @brief The phases of processing that llvmc understands
  44       enum Phases {
  45         PREPROCESSING, ///< Source language combining, filtering, substitution
  46         TRANSLATION,   ///< Translate source -> LLVM bitcode/assembly
  47         OPTIMIZATION,  ///< Optimize translation result
  48         ASSEMBLY,      ///< Convert program to executable
  49         LINKING,       ///< Link bitcode and native code
  50         NUM_PHASES     ///< Always last!
  51       };
  52
  53       /// @brief The levels of optimization llvmc understands
  54       enum OptimizationLevels {
  55         OPT_FAST_COMPILE,         ///< Optimize to make >compile< go faster
  56         OPT_SIMPLE,               ///< Standard/simple optimizations
  57         OPT_AGGRESSIVE,           ///< Aggressive optimizations
  58         OPT_LINK_TIME,            ///< Aggressive + LinkTime optimizations
  59         OPT_AGGRESSIVE_LINK_TIME, ///< Make it go way fast!
  60         OPT_NONE                  ///< No optimizations. Keep this at the end!
  61       };
  62
  63       /// @brief Action specific flags
  64       enum ConfigurationFlags {
  65         REQUIRED_FLAG        = 0x0001, ///< Should the action always be run?
  66         PREPROCESSES_FLAG    = 0x0002, ///< Does this action preprocess?
  67         TRANSLATES_FLAG      = 0x0004, ///< Does this action translate?
  68         OUTPUT_IS_ASM_FLAG   = 0x0008, ///< Action produces .ll files?
  69         FLAGS_MASK           = 0x000F  ///< Union of all flags
  70       };
  71
  72       /// This type is the input list to the CompilerDriver. It provides
  73       /// a vector of pathname/filetype pairs. The filetype is used to look up
  74       /// the configuration of the actions to be taken by the driver.
  75       /// @brief The Input Data to the execute method
  76       typedef std::vector<std::pair<sys::Path,std::string> > InputList;
  77
  78       /// This type is read from configuration files or otherwise provided to
  79       /// the CompilerDriver through a "ConfigDataProvider". It serves as both
  80       /// the template of what to do and the actual Action to be executed.
  81       /// @brief A structure to hold the action data for a given source
  82       /// language.
  83       struct Action {
  84         Action() : flags(0) {}
  85         sys::Path program; ///< The program to execve
  86         StringVector args; ///< Arguments to the program
  87         unsigned flags;    ///< Action specific flags
  88         void set(unsigned fl ) { flags |= fl; }
  89         void clear(unsigned fl) { flags &= (FLAGS_MASK ^ fl); }
  90         bool isSet(unsigned fl) { return (flags&fl) != 0; }
  91       };
  92
  93       struct ConfigData {
  94         ConfigData();
  95         std::string version;    ///< The version number.
  96         std::string langName;   ///< The name of the source language
  97         StringTable opts;       ///< The o10n options for each level
  98         StringVector libpaths;  ///< The library paths
  99         Action PreProcessor;    ///< PreProcessor command line
 100         Action Translator;      ///< Translator command line
 101         Action Optimizer;       ///< Optimizer command line
 102         Action Assembler;       ///< Assembler command line
 103         Action Linker;          ///< Linker command line
 104       };
 105
 106       /// This pure virtual interface class defines the interface between the
 107       /// CompilerDriver and other software that provides ConfigData objects to
 108       /// it. The CompilerDriver must be configured to use an object of this
 109       /// type so it can obtain the configuration data.
 110       /// @see setConfigDataProvider
 111       /// @brief Configuration Data Provider interface
 112       class ConfigDataProvider {
 113       public:
 114         virtual ~ConfigDataProvider();
 115         virtual ConfigData* ProvideConfigData(const std::string& filetype) = 0;
 116         virtual void setConfigDir(const sys::Path& dirName) = 0;
 117       };
 118
 119       /// These flags control various actions of the compiler driver. They are
 120       /// used by adding the needed flag values together and passing them to the
 121       /// compiler driver's setDriverFlags method.
 122       /// @see setDriverFlags
 123       /// @brief Driver specific flags
 124       enum DriverFlags {
 125         DRY_RUN_FLAG         = 0x0001, ///< Do everything but execute actions
 126         VERBOSE_FLAG         = 0x0002, ///< Print each action
 127         DEBUG_FLAG           = 0x0004, ///< Print debug information
 128         TIME_PASSES_FLAG     = 0x0008, ///< Time the passes as they execute
 129         TIME_ACTIONS_FLAG    = 0x0010, ///< Time the actions as they execute
 130         SHOW_STATS_FLAG      = 0x0020, ///< Show pass statistics
 131         EMIT_NATIVE_FLAG     = 0x0040, ///< Emit native code instead of bc
 132         EMIT_RAW_FLAG        = 0x0080, ///< Emit raw, unoptimized bitcode
 133         KEEP_TEMPS_FLAG      = 0x0100, ///< Don't delete temporary files
 134         STRIP_OUTPUT_FLAG    = 0x0200, ///< Strip symbols from linked output
 135         DRIVER_FLAGS_MASK    = 0x03FF  ///< Union of the above flags
 136       };
 137
 138     /// @}
 139     /// @name Constructors
 140     /// @{
 141     public:
 142       /// @brief Static Constructor
 143       static CompilerDriver* Get(ConfigDataProvider& CDP);
 144
 145       /// @brief Virtual destructor
 146       virtual ~CompilerDriver();
 147
 148     /// @}
 149     /// @name Methods
 150     /// @{
 151     public:
 152       /// @brief Execute the actions requested for the given input list.
 153       virtual int execute(
 154         const InputList& list, const sys::Path& output, std::string& ErrMsg) =0;
 155
 156       /// @brief Set the final phase at which compilation terminates
 157       virtual void setFinalPhase(Phases phase) = 0;
 158
 159       /// @brief Set the optimization level for the compilation
 160       virtual void setOptimization(OptimizationLevels level) = 0;
 161
 162       /// @brief Set the driver flags.
 163       virtual void setDriverFlags(unsigned flags) = 0;
 164
 165       /// @brief Set the output machine name.
 166       virtual void setOutputMachine(const std::string& machineName) = 0;
 167
 168       /// @brief Set the options for a given phase.
 169       virtual void setPhaseArgs(Phases phase, const StringVector& opts) = 0;
 170
 171       /// @brief Set Library Paths
 172       virtual void setIncludePaths(const StringVector& paths) = 0;
 173
 174       /// @brief Set Library Paths
 175       virtual void setSymbolDefines(const StringVector& paths) = 0;
 176
 177       /// @brief Set Library Paths
 178       virtual void setLibraryPaths(const StringVector& paths) = 0;
 179
 180       /// @brief Add a path to the list of library paths
 181       virtual void addLibraryPath( const sys::Path& libPath )  = 0;
 182
 183       /// @brief Add a path to the list of paths in which to find tools
 184       virtual void addToolPath( const sys::Path& toolPath) = 0;
 185
 186       /// @brief Set the list of -f options to be passed through
 187       virtual void setfPassThrough(const StringVector& fOpts) = 0;
 188
 189       /// @brief Set the list of -M options to be passed through
 190       virtual void setMPassThrough(const StringVector& fOpts) = 0;
 191
 192       /// @brief Set the list of -W options to be passed through
 193       virtual void setWPassThrough(const StringVector& fOpts) = 0;
 194
 195       /// @brief Determine where a linkage file is located in the file system
 196       virtual sys::Path GetPathForLinkageItem(
 197         const std::string& link_item, ///< Item to be sought
 198         bool native = false           ///< Looking for native?
 199       ) = 0;
 200
 201     /// @}
 202   };
 203 }
 204
 205 // vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
 206 #endif