tools/bugpoint/ToolRunner.cpp

   1 //===-- ToolRunner.cpp ----------------------------------------------------===//
   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 implements the interfaces described in the ToolRunner.h file.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #define DEBUG_TYPE "toolrunner"
  15 #include "ToolRunner.h"
  16 #include "llvm/Config/config.h"   // for HAVE_LINK_R
  17 #include "llvm/Support/CommandLine.h"
  18 #include "llvm/Support/Debug.h"
  19 #include "llvm/Support/FileUtilities.h"
  20 #include "llvm/Support/Program.h"
  21 #include "llvm/Support/raw_ostream.h"
  22 #include <fstream>
  23 #include <sstream>
  24 using namespace llvm;
  25
  26 namespace llvm {
  27   cl::opt<bool>
  28   SaveTemps("save-temps", cl::init(false), cl::desc("Save temporary files"));
  29 }
  30
  31 namespace {
  32   cl::opt<std::string>
  33   RemoteClient("remote-client",
  34                cl::desc("Remote execution client (rsh/ssh)"));
  35
  36   cl::opt<std::string>
  37   RemoteHost("remote-host",
  38              cl::desc("Remote execution (rsh/ssh) host"));
  39
  40   cl::opt<std::string>
  41   RemotePort("remote-port",
  42              cl::desc("Remote execution (rsh/ssh) port"));
  43
  44   cl::opt<std::string>
  45   RemoteUser("remote-user",
  46              cl::desc("Remote execution (rsh/ssh) user id"));
  47
  48   cl::opt<std::string>
  49   RemoteExtra("remote-extra-options",
  50           cl::desc("Remote execution (rsh/ssh) extra options"));
  51 }
  52
  53 /// RunProgramWithTimeout - This function provides an alternate interface
  54 /// to the sys::Program::ExecuteAndWait interface.
  55 /// @see sys::Program::ExecuteAndWait
  56 static int RunProgramWithTimeout(StringRef ProgramPath,
  57                                  const char **Args,
  58                                  StringRef StdInFile,
  59                                  StringRef StdOutFile,
  60                                  StringRef StdErrFile,
  61                                  unsigned NumSeconds = 0,
  62                                  unsigned MemoryLimit = 0,
  63                                  std::string *ErrMsg = 0) {
  64   const StringRef *Redirects[3] = { &StdInFile, &StdOutFile, &StdErrFile };
  65
  66 #if 0 // For debug purposes
  67   {
  68     errs() << "RUN:";
  69     for (unsigned i = 0; Args[i]; ++i)
  70       errs() << " " << Args[i];
  71     errs() << "\n";
  72   }
  73 #endif
  74
  75   return sys::ExecuteAndWait(ProgramPath, Args, 0, Redirects,
  76                              NumSeconds, MemoryLimit, ErrMsg);
  77 }
  78
  79 /// RunProgramRemotelyWithTimeout - This function runs the given program
  80 /// remotely using the given remote client and the sys::Program::ExecuteAndWait.
  81 /// Returns the remote program exit code or reports a remote client error if it
  82 /// fails. Remote client is required to return 255 if it failed or program exit
  83 /// code otherwise.
  84 /// @see sys::Program::ExecuteAndWait
  85 static int RunProgramRemotelyWithTimeout(StringRef RemoteClientPath,
  86                                          const char **Args,
  87                                          StringRef StdInFile,
  88                                          StringRef StdOutFile,
  89                                          StringRef StdErrFile,
  90                                          unsigned NumSeconds = 0,
  91                                          unsigned MemoryLimit = 0) {
  92   const StringRef *Redirects[3] = { &StdInFile, &StdOutFile, &StdErrFile };
  93
  94 #if 0 // For debug purposes
  95   {
  96     errs() << "RUN:";
  97     for (unsigned i = 0; Args[i]; ++i)
  98       errs() << " " << Args[i];
  99     errs() << "\n";
 100   }
 101 #endif
 102
 103   // Run the program remotely with the remote client
 104   int ReturnCode = sys::ExecuteAndWait(RemoteClientPath, Args, 0,
 105                                        Redirects, NumSeconds, MemoryLimit);
 106
 107   // Has the remote client fail?
 108   if (255 == ReturnCode) {
 109     std::ostringstream OS;
 110     OS << "\nError running remote client:\n ";
 111     for (const char **Arg = Args; *Arg; ++Arg)
 112       OS << " " << *Arg;
 113     OS << "\n";
 114
 115     // The error message is in the output file, let's print it out from there.
 116     std::string StdOutFileName = StdOutFile.str();
 117     std::ifstream ErrorFile(StdOutFileName.c_str());
 118     if (ErrorFile) {
 119       std::copy(std::istreambuf_iterator<char>(ErrorFile),
 120                 std::istreambuf_iterator<char>(),
 121                 std::ostreambuf_iterator<char>(OS));
 122       ErrorFile.close();
 123     }
 124
 125     errs() << OS.str();
 126   }
 127
 128   return ReturnCode;
 129 }
 130
 131 static std::string ProcessFailure(StringRef ProgPath, const char** Args,
 132                                   unsigned Timeout = 0,
 133                                   unsigned MemoryLimit = 0) {
 134   std::ostringstream OS;
 135   OS << "\nError running tool:\n ";
 136   for (const char **Arg = Args; *Arg; ++Arg)
 137     OS << " " << *Arg;
 138   OS << "\n";
 139
 140   // Rerun the compiler, capturing any error messages to print them.
 141   sys::Path ErrorFilename("bugpoint.program_error_messages");
 142   std::string ErrMsg;
 143   if (ErrorFilename.makeUnique(true, &ErrMsg)) {
 144     errs() << "Error making unique filename: " << ErrMsg << "\n";
 145     exit(1);
 146   }
 147   RunProgramWithTimeout(ProgPath, Args, "", ErrorFilename.str(),
 148                         ErrorFilename.str(), Timeout, MemoryLimit);
 149   // FIXME: check return code ?
 150
 151   // Print out the error messages generated by GCC if possible...
 152   std::ifstream ErrorFile(ErrorFilename.c_str());
 153   if (ErrorFile) {
 154     std::copy(std::istreambuf_iterator<char>(ErrorFile),
 155               std::istreambuf_iterator<char>(),
 156               std::ostreambuf_iterator<char>(OS));
 157     ErrorFile.close();
 158   }
 159
 160   ErrorFilename.eraseFromDisk();
 161   return OS.str();
 162 }
 163
 164 //===---------------------------------------------------------------------===//
 165 // LLI Implementation of AbstractIntepreter interface
 166 //
 167 namespace {
 168   class LLI : public AbstractInterpreter {
 169     std::string LLIPath;          // The path to the LLI executable
 170     std::vector<std::string> ToolArgs; // Args to pass to LLI
 171   public:
 172     LLI(const std::string &Path, const std::vector<std::string> *Args)
 173       : LLIPath(Path) {
 174       ToolArgs.clear ();
 175       if (Args) { ToolArgs = *Args; }
 176     }
 177
 178     virtual int ExecuteProgram(const std::string &Bitcode,
 179                                const std::vector<std::string> &Args,
 180                                const std::string &InputFile,
 181                                const std::string &OutputFile,
 182                                std::string *Error,
 183                                const std::vector<std::string> &GCCArgs,
 184                                const std::vector<std::string> &SharedLibs =
 185                                std::vector<std::string>(),
 186                                unsigned Timeout = 0,
 187                                unsigned MemoryLimit = 0);
 188   };
 189 }
 190
 191 int LLI::ExecuteProgram(const std::string &Bitcode,
 192                         const std::vector<std::string> &Args,
 193                         const std::string &InputFile,
 194                         const std::string &OutputFile,
 195                         std::string *Error,
 196                         const std::vector<std::string> &GCCArgs,
 197                         const std::vector<std::string> &SharedLibs,
 198                         unsigned Timeout,
 199                         unsigned MemoryLimit) {
 200   std::vector<const char*> LLIArgs;
 201   LLIArgs.push_back(LLIPath.c_str());
 202   LLIArgs.push_back("-force-interpreter=true");
 203
 204   for (std::vector<std::string>::const_iterator i = SharedLibs.begin(),
 205          e = SharedLibs.end(); i != e; ++i) {
 206     LLIArgs.push_back("-load");
 207     LLIArgs.push_back((*i).c_str());
 208   }
 209
 210   // Add any extra LLI args.
 211   for (unsigned i = 0, e = ToolArgs.size(); i != e; ++i)
 212     LLIArgs.push_back(ToolArgs[i].c_str());
 213
 214   LLIArgs.push_back(Bitcode.c_str());
 215   // Add optional parameters to the running program from Argv
 216   for (unsigned i=0, e = Args.size(); i != e; ++i)
 217     LLIArgs.push_back(Args[i].c_str());
 218   LLIArgs.push_back(0);
 219
 220   outs() << "<lli>"; outs().flush();
 221   DEBUG(errs() << "\nAbout to run:\t";
 222         for (unsigned i=0, e = LLIArgs.size()-1; i != e; ++i)
 223           errs() << " " << LLIArgs[i];
 224         errs() << "\n";
 225         );
 226   return RunProgramWithTimeout(LLIPath, &LLIArgs[0],
 227       InputFile, OutputFile, OutputFile,
 228       Timeout, MemoryLimit, Error);
 229 }
 230
 231 void AbstractInterpreter::anchor() { }
 232
 233 // LLI create method - Try to find the LLI executable
 234 AbstractInterpreter *AbstractInterpreter::createLLI(const char *Argv0,
 235                                                     std::string &Message,
 236                                      const std::vector<std::string> *ToolArgs) {
 237   std::string LLIPath =
 238     PrependMainExecutablePath("lli", Argv0, (void *)(intptr_t)&createLLI).str();
 239   if (!LLIPath.empty()) {
 240     Message = "Found lli: " + LLIPath + "\n";
 241     return new LLI(LLIPath, ToolArgs);
 242   }
 243
 244   Message = "Cannot find `lli' in executable directory!\n";
 245   return 0;
 246 }
 247
 248 //===---------------------------------------------------------------------===//
 249 // Custom compiler command implementation of AbstractIntepreter interface
 250 //
 251 // Allows using a custom command for compiling the bitcode, thus allows, for
 252 // example, to compile a bitcode fragment without linking or executing, then
 253 // using a custom wrapper script to check for compiler errors.
 254 namespace {
 255   class CustomCompiler : public AbstractInterpreter {
 256     std::string CompilerCommand;
 257     std::vector<std::string> CompilerArgs;
 258   public:
 259     CustomCompiler(
 260       const std::string &CompilerCmd, std::vector<std::string> CompArgs) :
 261       CompilerCommand(CompilerCmd), CompilerArgs(CompArgs) {}
 262
 263     virtual void compileProgram(const std::string &Bitcode,
 264                                 std::string *Error,
 265                                 unsigned Timeout = 0,
 266                                 unsigned MemoryLimit = 0);
 267
 268     virtual int ExecuteProgram(const std::string &Bitcode,
 269                                const std::vector<std::string> &Args,
 270                                const std::string &InputFile,
 271                                const std::string &OutputFile,
 272                                std::string *Error,
 273                                const std::vector<std::string> &GCCArgs =
 274                                std::vector<std::string>(),
 275                                const std::vector<std::string> &SharedLibs =
 276                                std::vector<std::string>(),
 277                                unsigned Timeout = 0,
 278                                unsigned MemoryLimit = 0) {
 279       *Error = "Execution not supported with -compile-custom";
 280       return -1;
 281     }
 282   };
 283 }
 284
 285 void CustomCompiler::compileProgram(const std::string &Bitcode,
 286                                     std::string *Error,
 287                                     unsigned Timeout,
 288                                     unsigned MemoryLimit) {
 289
 290   std::vector<const char*> ProgramArgs;
 291   ProgramArgs.push_back(CompilerCommand.c_str());
 292
 293   for (std::size_t i = 0; i < CompilerArgs.size(); ++i)
 294     ProgramArgs.push_back(CompilerArgs.at(i).c_str());
 295   ProgramArgs.push_back(Bitcode.c_str());
 296   ProgramArgs.push_back(0);
 297
 298   // Add optional parameters to the running program from Argv
 299   for (unsigned i = 0, e = CompilerArgs.size(); i != e; ++i)
 300     ProgramArgs.push_back(CompilerArgs[i].c_str());
 301
 302   if (RunProgramWithTimeout(CompilerCommand, &ProgramArgs[0],
 303                              "", "", "",
 304                              Timeout, MemoryLimit, Error))
 305     *Error = ProcessFailure(CompilerCommand, &ProgramArgs[0],
 306                            Timeout, MemoryLimit);
 307 }
 308
 309 //===---------------------------------------------------------------------===//
 310 // Custom execution command implementation of AbstractIntepreter interface
 311 //
 312 // Allows using a custom command for executing the bitcode, thus allows,
 313 // for example, to invoke a cross compiler for code generation followed by
 314 // a simulator that executes the generated binary.
 315 namespace {
 316   class CustomExecutor : public AbstractInterpreter {
 317     std::string ExecutionCommand;
 318     std::vector<std::string> ExecutorArgs;
 319   public:
 320     CustomExecutor(
 321       const std::string &ExecutionCmd, std::vector<std::string> ExecArgs) :
 322       ExecutionCommand(ExecutionCmd), ExecutorArgs(ExecArgs) {}
 323
 324     virtual int ExecuteProgram(const std::string &Bitcode,
 325                                const std::vector<std::string> &Args,
 326                                const std::string &InputFile,
 327                                const std::string &OutputFile,
 328                                std::string *Error,
 329                                const std::vector<std::string> &GCCArgs,
 330                                const std::vector<std::string> &SharedLibs =
 331                                  std::vector<std::string>(),
 332                                unsigned Timeout = 0,
 333                                unsigned MemoryLimit = 0);
 334   };
 335 }
 336
 337 int CustomExecutor::ExecuteProgram(const std::string &Bitcode,
 338                         const std::vector<std::string> &Args,
 339                         const std::string &InputFile,
 340                         const std::string &OutputFile,
 341                         std::string *Error,
 342                         const std::vector<std::string> &GCCArgs,
 343                         const std::vector<std::string> &SharedLibs,
 344                         unsigned Timeout,
 345                         unsigned MemoryLimit) {
 346
 347   std::vector<const char*> ProgramArgs;
 348   ProgramArgs.push_back(ExecutionCommand.c_str());
 349
 350   for (std::size_t i = 0; i < ExecutorArgs.size(); ++i)
 351     ProgramArgs.push_back(ExecutorArgs.at(i).c_str());
 352   ProgramArgs.push_back(Bitcode.c_str());
 353   ProgramArgs.push_back(0);
 354
 355   // Add optional parameters to the running program from Argv
 356   for (unsigned i = 0, e = Args.size(); i != e; ++i)
 357     ProgramArgs.push_back(Args[i].c_str());
 358
 359   return RunProgramWithTimeout(
 360     ExecutionCommand,
 361     &ProgramArgs[0], InputFile, OutputFile,
 362     OutputFile, Timeout, MemoryLimit, Error);
 363 }
 364
 365 // Tokenize the CommandLine to the command and the args to allow
 366 // defining a full command line as the command instead of just the
 367 // executed program. We cannot just pass the whole string after the command
 368 // as a single argument because then program sees only a single
 369 // command line argument (with spaces in it: "foo bar" instead
 370 // of "foo" and "bar").
 371 //
 372 // code borrowed from:
 373 // http://oopweb.com/CPP/Documents/CPPHOWTO/Volume/C++Programming-HOWTO-7.html
 374 static void lexCommand(std::string &Message, const std::string &CommandLine,
 375                        std::string &CmdPath, std::vector<std::string> Args) {
 376
 377   std::string Command = "";
 378   std::string delimiters = " ";
 379
 380   std::string::size_type lastPos = CommandLine.find_first_not_of(delimiters, 0);
 381   std::string::size_type pos = CommandLine.find_first_of(delimiters, lastPos);
 382
 383   while (std::string::npos != pos || std::string::npos != lastPos) {
 384     std::string token = CommandLine.substr(lastPos, pos - lastPos);
 385     if (Command == "")
 386        Command = token;
 387     else
 388        Args.push_back(token);
 389     // Skip delimiters.  Note the "not_of"
 390     lastPos = CommandLine.find_first_not_of(delimiters, pos);
 391     // Find next "non-delimiter"
 392     pos = CommandLine.find_first_of(delimiters, lastPos);
 393   }
 394
 395   CmdPath = sys::FindProgramByName(Command);
 396   if (CmdPath.empty()) {
 397     Message =
 398       std::string("Cannot find '") + Command +
 399       "' in PATH!\n";
 400     return;
 401   }
 402
 403   Message = "Found command in: " + CmdPath + "\n";
 404 }
 405
 406 // Custom execution environment create method, takes the execution command
 407 // as arguments
 408 AbstractInterpreter *AbstractInterpreter::createCustomCompiler(
 409                     std::string &Message,
 410                     const std::string &CompileCommandLine) {
 411
 412   std::string CmdPath;
 413   std::vector<std::string> Args;
 414   lexCommand(Message, CompileCommandLine, CmdPath, Args);
 415   if (CmdPath.empty())
 416     return 0;
 417
 418   return new CustomCompiler(CmdPath, Args);
 419 }
 420
 421 // Custom execution environment create method, takes the execution command
 422 // as arguments
 423 AbstractInterpreter *AbstractInterpreter::createCustomExecutor(
 424                     std::string &Message,
 425                     const std::string &ExecCommandLine) {
 426
 427
 428   std::string CmdPath;
 429   std::vector<std::string> Args;
 430   lexCommand(Message, ExecCommandLine, CmdPath, Args);
 431   if (CmdPath.empty())
 432     return 0;
 433
 434   return new CustomExecutor(CmdPath, Args);
 435 }
 436
 437 //===----------------------------------------------------------------------===//
 438 // LLC Implementation of AbstractIntepreter interface
 439 //
 440 GCC::FileType LLC::OutputCode(const std::string &Bitcode,
 441                               sys::Path &OutputAsmFile, std::string &Error,
 442                               unsigned Timeout, unsigned MemoryLimit) {
 443   const char *Suffix = (UseIntegratedAssembler ? ".llc.o" : ".llc.s");
 444   sys::Path uniqueFile(Bitcode + Suffix);
 445   std::string ErrMsg;
 446   if (uniqueFile.makeUnique(true, &ErrMsg)) {
 447     errs() << "Error making unique filename: " << ErrMsg << "\n";
 448     exit(1);
 449   }
 450   OutputAsmFile = uniqueFile;
 451   std::vector<const char *> LLCArgs;
 452   LLCArgs.push_back(LLCPath.c_str());
 453
 454   // Add any extra LLC args.
 455   for (unsigned i = 0, e = ToolArgs.size(); i != e; ++i)
 456     LLCArgs.push_back(ToolArgs[i].c_str());
 457
 458   LLCArgs.push_back("-o");
 459   LLCArgs.push_back(OutputAsmFile.c_str()); // Output to the Asm file
 460   LLCArgs.push_back(Bitcode.c_str());      // This is the input bitcode
 461
 462   if (UseIntegratedAssembler)
 463     LLCArgs.push_back("-filetype=obj");
 464
 465   LLCArgs.push_back (0);
 466
 467   outs() << (UseIntegratedAssembler ? "<llc-ia>" : "<llc>");
 468   outs().flush();
 469   DEBUG(errs() << "\nAbout to run:\t";
 470         for (unsigned i = 0, e = LLCArgs.size()-1; i != e; ++i)
 471           errs() << " " << LLCArgs[i];
 472         errs() << "\n";
 473         );
 474   if (RunProgramWithTimeout(LLCPath, &LLCArgs[0],
 475                             "", "", "",
 476                             Timeout, MemoryLimit))
 477     Error = ProcessFailure(LLCPath, &LLCArgs[0],
 478                            Timeout, MemoryLimit);
 479   return UseIntegratedAssembler ? GCC::ObjectFile : GCC::AsmFile;
 480 }
 481
 482 void LLC::compileProgram(const std::string &Bitcode, std::string *Error,
 483                          unsigned Timeout, unsigned MemoryLimit) {
 484   sys::Path OutputAsmFile;
 485   OutputCode(Bitcode, OutputAsmFile, *Error, Timeout, MemoryLimit);
 486   OutputAsmFile.eraseFromDisk();
 487 }
 488
 489 int LLC::ExecuteProgram(const std::string &Bitcode,
 490                         const std::vector<std::string> &Args,
 491                         const std::string &InputFile,
 492                         const std::string &OutputFile,
 493                         std::string *Error,
 494                         const std::vector<std::string> &ArgsForGCC,
 495                         const std::vector<std::string> &SharedLibs,
 496                         unsigned Timeout,
 497                         unsigned MemoryLimit) {
 498
 499   sys::Path OutputAsmFile;
 500   GCC::FileType FileKind = OutputCode(Bitcode, OutputAsmFile, *Error, Timeout,
 501                                       MemoryLimit);
 502   FileRemover OutFileRemover(OutputAsmFile.str(), !SaveTemps);
 503
 504   std::vector<std::string> GCCArgs(ArgsForGCC);
 505   GCCArgs.insert(GCCArgs.end(), SharedLibs.begin(), SharedLibs.end());
 506
 507   // Assuming LLC worked, compile the result with GCC and run it.
 508   return gcc->ExecuteProgram(OutputAsmFile.str(), Args, FileKind,
 509                              InputFile, OutputFile, Error, GCCArgs,
 510                              Timeout, MemoryLimit);
 511 }
 512
 513 /// createLLC - Try to find the LLC executable
 514 ///
 515 LLC *AbstractInterpreter::createLLC(const char *Argv0,
 516                                     std::string &Message,
 517                                     const std::string &GCCBinary,
 518                                     const std::vector<std::string> *Args,
 519                                     const std::vector<std::string> *GCCArgs,
 520                                     bool UseIntegratedAssembler) {
 521   std::string LLCPath =
 522     PrependMainExecutablePath("llc", Argv0, (void *)(intptr_t)&createLLC).str();
 523   if (LLCPath.empty()) {
 524     Message = "Cannot find `llc' in executable directory!\n";
 525     return 0;
 526   }
 527
 528   GCC *gcc = GCC::create(Message, GCCBinary, GCCArgs);
 529   if (!gcc) {
 530     errs() << Message << "\n";
 531     exit(1);
 532   }
 533   Message = "Found llc: " + LLCPath + "\n";
 534   return new LLC(LLCPath, gcc, Args, UseIntegratedAssembler);
 535 }
 536
 537 //===---------------------------------------------------------------------===//
 538 // JIT Implementation of AbstractIntepreter interface
 539 //
 540 namespace {
 541   class JIT : public AbstractInterpreter {
 542     std::string LLIPath;          // The path to the LLI executable
 543     std::vector<std::string> ToolArgs; // Args to pass to LLI
 544   public:
 545     JIT(const std::string &Path, const std::vector<std::string> *Args)
 546       : LLIPath(Path) {
 547       ToolArgs.clear ();
 548       if (Args) { ToolArgs = *Args; }
 549     }
 550
 551     virtual int ExecuteProgram(const std::string &Bitcode,
 552                                const std::vector<std::string> &Args,
 553                                const std::string &InputFile,
 554                                const std::string &OutputFile,
 555                                std::string *Error,
 556                                const std::vector<std::string> &GCCArgs =
 557                                  std::vector<std::string>(),
 558                                const std::vector<std::string> &SharedLibs =
 559                                  std::vector<std::string>(),
 560                                unsigned Timeout = 0,
 561                                unsigned MemoryLimit = 0);
 562   };
 563 }
 564
 565 int JIT::ExecuteProgram(const std::string &Bitcode,
 566                         const std::vector<std::string> &Args,
 567                         const std::string &InputFile,
 568                         const std::string &OutputFile,
 569                         std::string *Error,
 570                         const std::vector<std::string> &GCCArgs,
 571                         const std::vector<std::string> &SharedLibs,
 572                         unsigned Timeout,
 573                         unsigned MemoryLimit) {
 574   // Construct a vector of parameters, incorporating those from the command-line
 575   std::vector<const char*> JITArgs;
 576   JITArgs.push_back(LLIPath.c_str());
 577   JITArgs.push_back("-force-interpreter=false");
 578
 579   // Add any extra LLI args.
 580   for (unsigned i = 0, e = ToolArgs.size(); i != e; ++i)
 581     JITArgs.push_back(ToolArgs[i].c_str());
 582
 583   for (unsigned i = 0, e = SharedLibs.size(); i != e; ++i) {
 584     JITArgs.push_back("-load");
 585     JITArgs.push_back(SharedLibs[i].c_str());
 586   }
 587   JITArgs.push_back(Bitcode.c_str());
 588   // Add optional parameters to the running program from Argv
 589   for (unsigned i=0, e = Args.size(); i != e; ++i)
 590     JITArgs.push_back(Args[i].c_str());
 591   JITArgs.push_back(0);
 592
 593   outs() << "<jit>"; outs().flush();
 594   DEBUG(errs() << "\nAbout to run:\t";
 595         for (unsigned i=0, e = JITArgs.size()-1; i != e; ++i)
 596           errs() << " " << JITArgs[i];
 597         errs() << "\n";
 598         );
 599   DEBUG(errs() << "\nSending output to " << OutputFile << "\n");
 600   return RunProgramWithTimeout(LLIPath, &JITArgs[0],
 601       InputFile, OutputFile, OutputFile,
 602       Timeout, MemoryLimit, Error);
 603 }
 604
 605 /// createJIT - Try to find the LLI executable
 606 ///
 607 AbstractInterpreter *AbstractInterpreter::createJIT(const char *Argv0,
 608                    std::string &Message, const std::vector<std::string> *Args) {
 609   std::string LLIPath =
 610     PrependMainExecutablePath("lli", Argv0, (void *)(intptr_t)&createJIT).str();
 611   if (!LLIPath.empty()) {
 612     Message = "Found lli: " + LLIPath + "\n";
 613     return new JIT(LLIPath, Args);
 614   }
 615
 616   Message = "Cannot find `lli' in executable directory!\n";
 617   return 0;
 618 }
 619
 620 //===---------------------------------------------------------------------===//
 621 // GCC abstraction
 622 //
 623
 624 static bool IsARMArchitecture(std::vector<const char*> Args) {
 625   for (std::vector<const char*>::const_iterator
 626          I = Args.begin(), E = Args.end(); I != E; ++I) {
 627     if (StringRef(*I).equals_lower("-arch")) {
 628       ++I;
 629       if (I != E && StringRef(*I).substr(0, strlen("arm")).equals_lower("arm"))
 630         return true;
 631     }
 632   }
 633
 634   return false;
 635 }
 636
 637 int GCC::ExecuteProgram(const std::string &ProgramFile,
 638                         const std::vector<std::string> &Args,
 639                         FileType fileType,
 640                         const std::string &InputFile,
 641                         const std::string &OutputFile,
 642                         std::string *Error,
 643                         const std::vector<std::string> &ArgsForGCC,
 644                         unsigned Timeout,
 645                         unsigned MemoryLimit) {
 646   std::vector<const char*> GCCArgs;
 647
 648   GCCArgs.push_back(GCCPath.c_str());
 649
 650   if (TargetTriple.getArch() == Triple::x86)
 651     GCCArgs.push_back("-m32");
 652
 653   for (std::vector<std::string>::const_iterator
 654          I = gccArgs.begin(), E = gccArgs.end(); I != E; ++I)
 655     GCCArgs.push_back(I->c_str());
 656
 657   // Specify -x explicitly in case the extension is wonky
 658   if (fileType != ObjectFile) {
 659     GCCArgs.push_back("-x");
 660     if (fileType == CFile) {
 661       GCCArgs.push_back("c");
 662       GCCArgs.push_back("-fno-strict-aliasing");
 663     } else {
 664       GCCArgs.push_back("assembler");
 665
 666       // For ARM architectures we don't want this flag. bugpoint isn't
 667       // explicitly told what architecture it is working on, so we get
 668       // it from gcc flags
 669       if (TargetTriple.isOSDarwin() && !IsARMArchitecture(GCCArgs))
 670         GCCArgs.push_back("-force_cpusubtype_ALL");
 671     }
 672   }
 673
 674   GCCArgs.push_back(ProgramFile.c_str());  // Specify the input filename.
 675
 676   GCCArgs.push_back("-x");
 677   GCCArgs.push_back("none");
 678   GCCArgs.push_back("-o");
 679   sys::Path OutputBinary (ProgramFile+".gcc.exe");
 680   std::string ErrMsg;
 681   if (OutputBinary.makeUnique(true, &ErrMsg)) {
 682     errs() << "Error making unique filename: " << ErrMsg << "\n";
 683     exit(1);
 684   }
 685   GCCArgs.push_back(OutputBinary.c_str()); // Output to the right file...
 686
 687   // Add any arguments intended for GCC. We locate them here because this is
 688   // most likely -L and -l options that need to come before other libraries but
 689   // after the source. Other options won't be sensitive to placement on the
 690   // command line, so this should be safe.
 691   for (unsigned i = 0, e = ArgsForGCC.size(); i != e; ++i)
 692     GCCArgs.push_back(ArgsForGCC[i].c_str());
 693
 694   GCCArgs.push_back("-lm");                // Hard-code the math library...
 695   GCCArgs.push_back("-O2");                // Optimize the program a bit...
 696 #if defined (HAVE_LINK_R)
 697   GCCArgs.push_back("-Wl,-R.");            // Search this dir for .so files
 698 #endif
 699   if (TargetTriple.getArch() == Triple::sparc)
 700     GCCArgs.push_back("-mcpu=v9");
 701   GCCArgs.push_back(0);                    // NULL terminator
 702
 703   outs() << "<gcc>"; outs().flush();
 704   DEBUG(errs() << "\nAbout to run:\t";
 705         for (unsigned i = 0, e = GCCArgs.size()-1; i != e; ++i)
 706           errs() << " " << GCCArgs[i];
 707         errs() << "\n";
 708         );
 709   if (RunProgramWithTimeout(GCCPath, &GCCArgs[0], "", "", "")) {
 710     *Error = ProcessFailure(GCCPath, &GCCArgs[0]);
 711     return -1;
 712   }
 713
 714   std::vector<const char*> ProgramArgs;
 715
 716   // Declared here so that the destructor only runs after
 717   // ProgramArgs is used.
 718   std::string Exec;
 719
 720   if (RemoteClientPath.empty())
 721     ProgramArgs.push_back(OutputBinary.c_str());
 722   else {
 723     ProgramArgs.push_back(RemoteClientPath.c_str());
 724     ProgramArgs.push_back(RemoteHost.c_str());
 725     if (!RemoteUser.empty()) {
 726       ProgramArgs.push_back("-l");
 727       ProgramArgs.push_back(RemoteUser.c_str());
 728     }
 729     if (!RemotePort.empty()) {
 730       ProgramArgs.push_back("-p");
 731       ProgramArgs.push_back(RemotePort.c_str());
 732     }
 733     if (!RemoteExtra.empty()) {
 734       ProgramArgs.push_back(RemoteExtra.c_str());
 735     }
 736
 737     // Full path to the binary. We need to cd to the exec directory because
 738     // there is a dylib there that the exec expects to find in the CWD
 739     char* env_pwd = getenv("PWD");
 740     Exec = "cd ";
 741     Exec += env_pwd;
 742     Exec += "; ./";
 743     Exec += OutputBinary.c_str();
 744     ProgramArgs.push_back(Exec.c_str());
 745   }
 746
 747   // Add optional parameters to the running program from Argv
 748   for (unsigned i = 0, e = Args.size(); i != e; ++i)
 749     ProgramArgs.push_back(Args[i].c_str());
 750   ProgramArgs.push_back(0);                // NULL terminator
 751
 752   // Now that we have a binary, run it!
 753   outs() << "<program>"; outs().flush();
 754   DEBUG(errs() << "\nAbout to run:\t";
 755         for (unsigned i = 0, e = ProgramArgs.size()-1; i != e; ++i)
 756           errs() << " " << ProgramArgs[i];
 757         errs() << "\n";
 758         );
 759
 760   FileRemover OutputBinaryRemover(OutputBinary.str(), !SaveTemps);
 761
 762   if (RemoteClientPath.empty()) {
 763     DEBUG(errs() << "<run locally>");
 764     int ExitCode = RunProgramWithTimeout(OutputBinary.str(), &ProgramArgs[0],
 765                                          InputFile, OutputFile, OutputFile,
 766                                          Timeout, MemoryLimit, Error);
 767     // Treat a signal (usually SIGSEGV) or timeout as part of the program output
 768     // so that crash-causing miscompilation is handled seamlessly.
 769     if (ExitCode < -1) {
 770       std::ofstream outFile(OutputFile.c_str(), std::ios_base::app);
 771       outFile << *Error << '\n';
 772       outFile.close();
 773       Error->clear();
 774     }
 775     return ExitCode;
 776   } else {
 777     outs() << "<run remotely>"; outs().flush();
 778     return RunProgramRemotelyWithTimeout(RemoteClientPath,
 779         &ProgramArgs[0], InputFile, OutputFile,
 780         OutputFile, Timeout, MemoryLimit);
 781   }
 782 }
 783
 784 int GCC::MakeSharedObject(const std::string &InputFile, FileType fileType,
 785                           std::string &OutputFile,
 786                           const std::vector<std::string> &ArgsForGCC,
 787                           std::string &Error) {
 788   sys::Path uniqueFilename(InputFile+LTDL_SHLIB_EXT);
 789   std::string ErrMsg;
 790   if (uniqueFilename.makeUnique(true, &ErrMsg)) {
 791     errs() << "Error making unique filename: " << ErrMsg << "\n";
 792     exit(1);
 793   }
 794   OutputFile = uniqueFilename.str();
 795
 796   std::vector<const char*> GCCArgs;
 797
 798   GCCArgs.push_back(GCCPath.c_str());
 799
 800   if (TargetTriple.getArch() == Triple::x86)
 801     GCCArgs.push_back("-m32");
 802
 803   for (std::vector<std::string>::const_iterator
 804          I = gccArgs.begin(), E = gccArgs.end(); I != E; ++I)
 805     GCCArgs.push_back(I->c_str());
 806
 807   // Compile the C/asm file into a shared object
 808   if (fileType != ObjectFile) {
 809     GCCArgs.push_back("-x");
 810     GCCArgs.push_back(fileType == AsmFile ? "assembler" : "c");
 811   }
 812   GCCArgs.push_back("-fno-strict-aliasing");
 813   GCCArgs.push_back(InputFile.c_str());   // Specify the input filename.
 814   GCCArgs.push_back("-x");
 815   GCCArgs.push_back("none");
 816   if (TargetTriple.getArch() == Triple::sparc)
 817     GCCArgs.push_back("-G");       // Compile a shared library, `-G' for Sparc
 818   else if (TargetTriple.isOSDarwin()) {
 819     // link all source files into a single module in data segment, rather than
 820     // generating blocks. dynamic_lookup requires that you set
 821     // MACOSX_DEPLOYMENT_TARGET=10.3 in your env.  FIXME: it would be better for
 822     // bugpoint to just pass that in the environment of GCC.
 823     GCCArgs.push_back("-single_module");
 824     GCCArgs.push_back("-dynamiclib");   // `-dynamiclib' for MacOS X/PowerPC
 825     GCCArgs.push_back("-undefined");
 826     GCCArgs.push_back("dynamic_lookup");
 827   } else
 828     GCCArgs.push_back("-shared");  // `-shared' for Linux/X86, maybe others
 829
 830   if (TargetTriple.getArch() == Triple::x86_64)
 831     GCCArgs.push_back("-fPIC");   // Requires shared objs to contain PIC
 832
 833   if (TargetTriple.getArch() == Triple::sparc)
 834     GCCArgs.push_back("-mcpu=v9");
 835
 836   GCCArgs.push_back("-o");
 837   GCCArgs.push_back(OutputFile.c_str()); // Output to the right filename.
 838   GCCArgs.push_back("-O2");              // Optimize the program a bit.
 839
 840
 841
 842   // Add any arguments intended for GCC. We locate them here because this is
 843   // most likely -L and -l options that need to come before other libraries but
 844   // after the source. Other options won't be sensitive to placement on the
 845   // command line, so this should be safe.
 846   for (unsigned i = 0, e = ArgsForGCC.size(); i != e; ++i)
 847     GCCArgs.push_back(ArgsForGCC[i].c_str());
 848   GCCArgs.push_back(0);                    // NULL terminator
 849
 850
 851
 852   outs() << "<gcc>"; outs().flush();
 853   DEBUG(errs() << "\nAbout to run:\t";
 854         for (unsigned i = 0, e = GCCArgs.size()-1; i != e; ++i)
 855           errs() << " " << GCCArgs[i];
 856         errs() << "\n";
 857         );
 858   if (RunProgramWithTimeout(GCCPath, &GCCArgs[0], "", "", "")) {
 859     Error = ProcessFailure(GCCPath, &GCCArgs[0]);
 860     return 1;
 861   }
 862   return 0;
 863 }
 864
 865 /// create - Try to find the `gcc' executable
 866 ///
 867 GCC *GCC::create(std::string &Message,
 868                  const std::string &GCCBinary,
 869                  const std::vector<std::string> *Args) {
 870   std::string GCCPath = sys::FindProgramByName(GCCBinary);
 871   if (GCCPath.empty()) {
 872     Message = "Cannot find `"+ GCCBinary +"' in PATH!\n";
 873     return 0;
 874   }
 875
 876   std::string RemoteClientPath;
 877   if (!RemoteClient.empty())
 878     RemoteClientPath = sys::FindProgramByName(RemoteClient);
 879
 880   Message = "Found gcc: " + GCCPath + "\n";
 881   return new GCC(GCCPath, RemoteClientPath, Args);
 882 }