tools/bugpoint/ToolRunner.h

   1 //===-- tools/bugpoint/ToolRunner.h -----------------------------*- C++ -*-===//
   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 exposes an abstraction around a platform C compiler, used to
  11 // compile C and assembly code.  It also exposes an "AbstractIntepreter"
  12 // interface, which is used to execute code using one of the LLVM execution
  13 // engines.
  14 //
  15 //===----------------------------------------------------------------------===//
  16
  17 #ifndef BUGPOINT_TOOLRUNNER_H
  18 #define BUGPOINT_TOOLRUNNER_H
  19
  20 #include "llvm/Support/SystemUtils.h"
  21 #include <exception>
  22 #include <vector>
  23
  24 namespace llvm {
  25
  26 class CBE;
  27 class LLC;
  28
  29 /// ToolExecutionError - An instance of this class is thrown by the
  30 /// AbstractInterpreter instances if there is an error running a tool (e.g., LLC
  31 /// crashes) which prevents execution of the program.
  32 ///
  33 class ToolExecutionError : std::exception {
  34   std::string Message;
  35 public:
  36   explicit ToolExecutionError(const std::string &M) : Message(M) {}
  37   virtual ~ToolExecutionError() throw();
  38   virtual const char* what() const throw() { return Message.c_str(); }
  39 };
  40
  41
  42 //===---------------------------------------------------------------------===//
  43 // GCC abstraction
  44 //
  45 class GCC {
  46   sys::Path GCCPath;                // The path to the gcc executable.
  47   sys::Path RemoteClientPath;       // The path to the rsh / ssh executable.
  48   std::vector<std::string> gccArgs; // GCC-specific arguments.
  49   GCC(const sys::Path &gccPath, const sys::Path &RemotePath,
  50       const std::vector<std::string> *GCCArgs)
  51     : GCCPath(gccPath), RemoteClientPath(RemotePath) {
  52     if (GCCArgs) gccArgs = *GCCArgs;
  53   }
  54 public:
  55   enum FileType { AsmFile, CFile };
  56
  57   static GCC *create(const std::string &ProgramPath, std::string &Message,
  58                      const std::vector<std::string> *Args);
  59
  60   /// ExecuteProgram - Execute the program specified by "ProgramFile" (which is
  61   /// either a .s file, or a .c file, specified by FileType), with the specified
  62   /// arguments.  Standard input is specified with InputFile, and standard
  63   /// Output is captured to the specified OutputFile location.  The SharedLibs
  64   /// option specifies optional native shared objects that can be loaded into
  65   /// the program for execution.
  66   ///
  67   int ExecuteProgram(const std::string &ProgramFile,
  68                      const std::vector<std::string> &Args,
  69                      FileType fileType,
  70                      const std::string &InputFile,
  71                      const std::string &OutputFile,
  72                      const std::vector<std::string> &GCCArgs =
  73                          std::vector<std::string>(),
  74                      unsigned Timeout = 0,
  75                      unsigned MemoryLimit = 0);
  76
  77   /// MakeSharedObject - This compiles the specified file (which is either a .c
  78   /// file or a .s file) into a shared object.
  79   ///
  80   int MakeSharedObject(const std::string &InputFile, FileType fileType,
  81                        std::string &OutputFile,
  82                        const std::vector<std::string> &ArgsForGCC);
  83 };
  84
  85
  86 //===---------------------------------------------------------------------===//
  87 /// AbstractInterpreter Class - Subclasses of this class are used to execute
  88 /// LLVM bitcode in a variety of ways.  This abstract interface hides this
  89 /// complexity behind a simple interface.
  90 ///
  91 class AbstractInterpreter {
  92 public:
  93   static CBE *createCBE(const std::string &ProgramPath, std::string &Message,
  94                         const std::vector<std::string> *Args = 0,
  95                         const std::vector<std::string> *GCCArgs = 0);
  96   static LLC *createLLC(const std::string &ProgramPath, std::string &Message,
  97                         const std::vector<std::string> *Args = 0,
  98                         const std::vector<std::string> *GCCArgs = 0);
  99
 100   static AbstractInterpreter* createLLI(const std::string &ProgramPath,
 101                                         std::string &Message,
 102                                         const std::vector<std::string> *Args=0);
 103
 104   static AbstractInterpreter* createJIT(const std::string &ProgramPath,
 105                                         std::string &Message,
 106                                         const std::vector<std::string> *Args=0);
 107
 108   static AbstractInterpreter* createCustom(const std::string &ProgramPath,
 109                                            std::string &Message,
 110                                            const std::string &ExecCommandLine);
 111
 112
 113   virtual ~AbstractInterpreter() {}
 114
 115   /// compileProgram - Compile the specified program from bitcode to executable
 116   /// code.  This does not produce any output, it is only used when debugging
 117   /// the code generator.  If the code generator fails, an exception should be
 118   /// thrown, otherwise, this function will just return.
 119   virtual void compileProgram(const std::string &Bitcode) {}
 120
 121   /// OutputCode - Compile the specified program from bitcode to code
 122   /// understood by the GCC driver (either C or asm).  If the code generator
 123   /// fails, an exception should be thrown, otherwise, this function returns the
 124   /// type of code emitted.
 125   virtual GCC::FileType OutputCode(const std::string &Bitcode,
 126                                    sys::Path &OutFile) {
 127     throw std::string("OutputCode not supported by this AbstractInterpreter!");
 128   }
 129
 130   /// ExecuteProgram - Run the specified bitcode file, emitting output to the
 131   /// specified filename.  This returns the exit code of the program.
 132   ///
 133   virtual int ExecuteProgram(const std::string &Bitcode,
 134                              const std::vector<std::string> &Args,
 135                              const std::string &InputFile,
 136                              const std::string &OutputFile,
 137                              const std::vector<std::string> &GCCArgs =
 138                                std::vector<std::string>(),
 139                              const std::vector<std::string> &SharedLibs =
 140                                std::vector<std::string>(),
 141                              unsigned Timeout = 0,
 142                              unsigned MemoryLimit = 0) = 0;
 143 };
 144
 145 //===---------------------------------------------------------------------===//
 146 // CBE Implementation of AbstractIntepreter interface
 147 //
 148 class CBE : public AbstractInterpreter {
 149   sys::Path LLCPath;                 // The path to the `llc' executable.
 150   std::vector<std::string> ToolArgs; // Extra args to pass to LLC.
 151   GCC *gcc;
 152 public:
 153   CBE(const sys::Path &llcPath, GCC *Gcc,
 154       const std::vector<std::string> *Args)
 155     : LLCPath(llcPath), gcc(Gcc) {
 156     ToolArgs.clear ();
 157     if (Args) ToolArgs = *Args;
 158   }
 159   ~CBE() { delete gcc; }
 160
 161   /// compileProgram - Compile the specified program from bitcode to executable
 162   /// code.  This does not produce any output, it is only used when debugging
 163   /// the code generator.  If the code generator fails, an exception should be
 164   /// thrown, otherwise, this function will just return.
 165   virtual void compileProgram(const std::string &Bitcode);
 166
 167   virtual int ExecuteProgram(const std::string &Bitcode,
 168                              const std::vector<std::string> &Args,
 169                              const std::string &InputFile,
 170                              const std::string &OutputFile,
 171                              const std::vector<std::string> &GCCArgs =
 172                                std::vector<std::string>(),
 173                              const std::vector<std::string> &SharedLibs =
 174                                std::vector<std::string>(),
 175                              unsigned Timeout = 0,
 176                              unsigned MemoryLimit = 0);
 177
 178   /// OutputCode - Compile the specified program from bitcode to code
 179   /// understood by the GCC driver (either C or asm).  If the code generator
 180   /// fails, an exception should be thrown, otherwise, this function returns the
 181   /// type of code emitted.
 182   virtual GCC::FileType OutputCode(const std::string &Bitcode,
 183                                    sys::Path &OutFile);
 184 };
 185
 186
 187 //===---------------------------------------------------------------------===//
 188 // LLC Implementation of AbstractIntepreter interface
 189 //
 190 class LLC : public AbstractInterpreter {
 191   std::string LLCPath;               // The path to the LLC executable.
 192   std::vector<std::string> ToolArgs; // Extra args to pass to LLC.
 193   std::vector<std::string> gccArgs;  // Extra args to pass to GCC.
 194   GCC *gcc;
 195 public:
 196   LLC(const std::string &llcPath, GCC *Gcc,
 197       const std::vector<std::string> *Args,
 198       const std::vector<std::string> *GCCArgs)
 199     : LLCPath(llcPath), gcc(Gcc) {
 200     ToolArgs.clear();
 201     if (Args) ToolArgs = *Args;
 202     if (GCCArgs) gccArgs = *GCCArgs;
 203   }
 204   ~LLC() { delete gcc; }
 205
 206   /// compileProgram - Compile the specified program from bitcode to executable
 207   /// code.  This does not produce any output, it is only used when debugging
 208   /// the code generator.  If the code generator fails, an exception should be
 209   /// thrown, otherwise, this function will just return.
 210   virtual void compileProgram(const std::string &Bitcode);
 211
 212   virtual int ExecuteProgram(const std::string &Bitcode,
 213                              const std::vector<std::string> &Args,
 214                              const std::string &InputFile,
 215                              const std::string &OutputFile,
 216                              const std::vector<std::string> &GCCArgs =
 217                                std::vector<std::string>(),
 218                              const std::vector<std::string> &SharedLibs =
 219                                 std::vector<std::string>(),
 220                              unsigned Timeout = 0,
 221                              unsigned MemoryLimit = 0);
 222
 223   virtual GCC::FileType OutputCode(const std::string &Bitcode,
 224                                    sys::Path &OutFile);
 225
 226 };
 227
 228 } // End llvm namespace
 229
 230 #endif