tools/llvmc/CompilerDriver.cpp

   1 //===- CompilerDriver.cpp - The LLVM Compiler Driver ------------*- C++ -*-===//
   2 //
   3 //
   4 //                     The LLVM Compiler Infrastructure
   5 //
   6 // This file was developed by Reid Spencer and is distributed under the
   7 // University of Illinois Open Source License. See LICENSE.TXT for details.
   8 //
   9 //===----------------------------------------------------------------------===//
  10 //
  11 // This file implements the bulk of the LLVM Compiler Driver (llvmc).
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "CompilerDriver.h"
  16 #include "ConfigLexer.h"
  17 #include "llvm/Module.h"
  18 #include "llvm/ModuleProvider.h"
  19 #include "llvm/Bitcode/ReaderWriter.h"
  20 #include "llvm/Support/MemoryBuffer.h"
  21 #include "llvm/Support/Timer.h"
  22 #include "llvm/System/Signals.h"
  23 #include "llvm/ADT/SetVector.h"
  24 #include "llvm/ADT/StringExtras.h"
  25 #include "llvm/Config/alloca.h"
  26 #include <iostream>
  27 using namespace llvm;
  28
  29
  30 namespace {
  31
  32 void WriteAction(CompilerDriver::Action* action ) {
  33   std::cerr << action->program.c_str();
  34   std::vector<std::string>::const_iterator I = action->args.begin();
  35   while (I != action->args.end()) {
  36     std::cerr << ' ' << *I;
  37     ++I;
  38   }
  39   std::cerr << '\n';
  40 }
  41
  42 void DumpAction(CompilerDriver::Action* action) {
  43   std::cerr << "command = " << action->program.c_str();
  44   std::vector<std::string>::const_iterator I = action->args.begin();
  45   while (I != action->args.end()) {
  46     std::cerr << ' ' << *I;
  47     ++I;
  48   }
  49   std::cerr << '\n';
  50   std::cerr << "flags = " << action->flags << '\n';
  51 }
  52
  53 void DumpConfigData(CompilerDriver::ConfigData* cd, const std::string& type ){
  54   std::cerr << "Configuration Data For '" << cd->langName << "' (" << type
  55     << ")\n";
  56   std::cerr << "PreProcessor: ";
  57   DumpAction(&cd->PreProcessor);
  58   std::cerr << "Translator: ";
  59   DumpAction(&cd->Translator);
  60   std::cerr << "Optimizer: ";
  61   DumpAction(&cd->Optimizer);
  62   std::cerr << "Assembler: ";
  63   DumpAction(&cd->Assembler);
  64   std::cerr << "Linker: ";
  65   DumpAction(&cd->Linker);
  66 }
  67
  68 static bool GetBitcodeDependentLibraries(const std::string &fname,
  69                                          Module::LibraryListType& deplibs,
  70                                          std::string* ErrMsg) {
  71   ModuleProvider *MP = 0;
  72   if (MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(fname)) {
  73     MP = getBitcodeModuleProvider(Buffer);
  74     if (MP == 0) delete Buffer;
  75   }
  76   if (!MP) {
  77     deplibs.clear();
  78     return true;
  79   }
  80   deplibs = MP->getModule()->getLibraries();
  81   delete MP;
  82   return false;
  83 }
  84
  85
  86 class CompilerDriverImpl : public CompilerDriver {
  87 /// @name Constructors
  88 /// @{
  89 public:
  90   CompilerDriverImpl(ConfigDataProvider& confDatProv )
  91     : cdp(&confDatProv)
  92     , finalPhase(LINKING)
  93     , optLevel(OPT_FAST_COMPILE)
  94     , Flags(0)
  95     , machine()
  96     , LibraryPaths()
  97     , TempDir()
  98     , AdditionalArgs()
  99   {
 100     AdditionalArgs.reserve(NUM_PHASES);
 101     StringVector emptyVec;
 102     for (unsigned i = 0; i < NUM_PHASES; ++i)
 103       AdditionalArgs.push_back(emptyVec);
 104   }
 105
 106   virtual ~CompilerDriverImpl() {
 107     cleanup();
 108     cdp = 0;
 109     LibraryPaths.clear();
 110     IncludePaths.clear();
 111     Defines.clear();
 112     TempDir.clear();
 113     AdditionalArgs.clear();
 114     fOptions.clear();
 115     MOptions.clear();
 116     WOptions.clear();
 117   }
 118
 119 /// @}
 120 /// @name Methods
 121 /// @{
 122 public:
 123   virtual void setFinalPhase(Phases phase) {
 124     finalPhase = phase;
 125   }
 126
 127   virtual void setOptimization(OptimizationLevels level) {
 128     optLevel = level;
 129   }
 130
 131   virtual void setDriverFlags(unsigned flags) {
 132     Flags = flags & DRIVER_FLAGS_MASK;
 133   }
 134
 135   virtual void setOutputMachine(const std::string& machineName) {
 136     machine = machineName;
 137   }
 138
 139   virtual void setPhaseArgs(Phases phase, const StringVector& opts) {
 140     assert(phase <= LINKING && phase >= PREPROCESSING);
 141     AdditionalArgs[phase] = opts;
 142   }
 143
 144   virtual void setIncludePaths(const StringVector& paths) {
 145     StringVector::const_iterator I = paths.begin();
 146     StringVector::const_iterator E = paths.end();
 147     while (I != E) {
 148       sys::Path tmp;
 149       tmp.set(*I);
 150       IncludePaths.push_back(tmp);
 151       ++I;
 152     }
 153   }
 154
 155   virtual void setSymbolDefines(const StringVector& defs) {
 156     Defines = defs;
 157   }
 158
 159   virtual void setLibraryPaths(const StringVector& paths) {
 160     StringVector::const_iterator I = paths.begin();
 161     StringVector::const_iterator E = paths.end();
 162     while (I != E) {
 163       sys::Path tmp;
 164       tmp.set(*I);
 165       LibraryPaths.push_back(tmp);
 166       ++I;
 167     }
 168   }
 169
 170   virtual void addLibraryPath(const sys::Path& libPath) {
 171     LibraryPaths.push_back(libPath);
 172   }
 173
 174   virtual void addToolPath(const sys::Path& toolPath) {
 175     ToolPaths.push_back(toolPath);
 176   }
 177
 178   virtual void setfPassThrough(const StringVector& fOpts) {
 179     fOptions = fOpts;
 180   }
 181
 182   /// @brief Set the list of -M options to be passed through
 183   virtual void setMPassThrough(const StringVector& MOpts) {
 184     MOptions = MOpts;
 185   }
 186
 187   /// @brief Set the list of -W options to be passed through
 188   virtual void setWPassThrough(const StringVector& WOpts) {
 189     WOptions = WOpts;
 190   }
 191
 192 /// @}
 193 /// @name Functions
 194 /// @{
 195 private:
 196   bool isSet(DriverFlags flag) {
 197     return 0 != ((flag & DRIVER_FLAGS_MASK) & Flags);
 198   }
 199
 200   void cleanup() {
 201     if (!isSet(KEEP_TEMPS_FLAG)) {
 202       const sys::FileStatus *Status = TempDir.getFileStatus();
 203       if (Status && Status->isDir)
 204         TempDir.eraseFromDisk(/*remove_contents=*/true);
 205     } else {
 206       std::cout << "Temporary files are in " << TempDir << "\n";
 207     }
 208   }
 209
 210   sys::Path MakeTempFile(const std::string& basename,
 211                          const std::string& suffix,
 212                          std::string* ErrMsg) {
 213     if (TempDir.isEmpty()) {
 214       TempDir = sys::Path::GetTemporaryDirectory(ErrMsg);
 215       if (TempDir.isEmpty())
 216         return sys::Path();
 217       sys::RemoveDirectoryOnSignal(TempDir);
 218     }
 219     sys::Path result(TempDir);
 220     if (!result.appendComponent(basename)) {
 221       if (ErrMsg)
 222         *ErrMsg = basename + ": can't use this file name";
 223       return sys::Path();
 224     }
 225     if (!result.appendSuffix(suffix)) {
 226       if (ErrMsg)
 227         *ErrMsg = suffix + ": can't use this file suffix";
 228       return sys::Path();
 229     }
 230     return result;
 231   }
 232
 233   Action* GetAction(ConfigData* cd,
 234                     const sys::Path& input,
 235                     const sys::Path& output,
 236                     Phases phase)
 237   {
 238     Action* pat = 0; ///< The pattern/template for the action
 239     Action* action = new Action; ///< The actual action to execute
 240
 241     // Get the action pattern
 242     switch (phase) {
 243       case PREPROCESSING: pat = &cd->PreProcessor; break;
 244       case TRANSLATION:   pat = &cd->Translator; break;
 245       case OPTIMIZATION:  pat = &cd->Optimizer; break;
 246       case ASSEMBLY:      pat = &cd->Assembler; break;
 247       case LINKING:       pat = &cd->Linker; break;
 248       default:
 249         assert(!"Invalid driver phase!");
 250         break;
 251     }
 252     assert(pat != 0 && "Invalid command pattern");
 253
 254     // Copy over some pattern things that don't need to change
 255     action->flags = pat->flags;
 256
 257     // See if program starts with wildcard...
 258     std::string programName=pat->program.toString();
 259     if (programName[0] == '%' && programName.length() >2) {
 260       switch(programName[1]){
 261       case 'b':
 262         if (programName.substr(0,8) == "%bindir%") {
 263           std::string tmp(LLVM_BINDIR);
 264           tmp.append(programName.substr(8));
 265           pat->program.set(tmp);
 266         }
 267         break;
 268       case 'l':
 269         if (programName.substr(0,12) == "%llvmgccdir%"){
 270           std::string tmp(LLVMGCCDIR);
 271           tmp.append(programName.substr(12));
 272           pat->program.set(tmp);
 273         }else if (programName.substr(0,13) == "%llvmgccarch%"){
 274           std::string tmp(LLVMGCCARCH);
 275           tmp.append(programName.substr(13));
 276           pat->program.set(tmp);
 277         }else if (programName.substr(0,9) == "%llvmgcc%"){
 278           std::string tmp(LLVMGCC);
 279           tmp.append(programName.substr(9));
 280           pat->program.set(tmp);
 281         }else if (programName.substr(0,9) == "%llvmgxx%"){
 282           std::string tmp(LLVMGXX);
 283           tmp.append(programName.substr(9));
 284           pat->program.set(tmp);
 285         }else if (programName.substr(0,9) == "%llvmcc1%"){
 286           std::string tmp(LLVMCC1);
 287           tmp.append(programName.substr(9));
 288           pat->program.set(tmp);
 289         }else if (programName.substr(0,13) == "%llvmcc1plus%"){
 290           std::string tmp(LLVMCC1PLUS);
 291           tmp.append(programName.substr(13));
 292           pat->program.set(tmp);
 293         }else if (programName.substr(0,8) == "%libdir%") {
 294           std::string tmp(LLVM_LIBDIR);
 295           tmp.append(programName.substr(8));
 296           pat->program.set(tmp);
 297         }
 298           break;
 299       }
 300     }
 301     action->program = pat->program;
 302
 303     // Do the substitutions from the pattern to the actual
 304     StringVector::iterator PI = pat->args.begin();
 305     StringVector::iterator PE = pat->args.end();
 306     while (PI != PE) {
 307       if ((*PI)[0] == '%' && PI->length() >2) {
 308         bool found = true;
 309         switch ((*PI)[1]) {
 310           case 'a':
 311             if (*PI == "%args%") {
 312               if (AdditionalArgs.size() > unsigned(phase))
 313                 if (!AdditionalArgs[phase].empty()) {
 314                   // Get specific options for each kind of action type
 315                   StringVector& addargs = AdditionalArgs[phase];
 316                   // Add specific options for each kind of action type
 317                   action->args.insert(action->args.end(), addargs.begin(),
 318                                       addargs.end());
 319                 }
 320             } else
 321               found = false;
 322             break;
 323           case 'b':
 324             if (*PI == "%bindir%") {
 325               std::string tmp(*PI);
 326               tmp.replace(0,8,LLVM_BINDIR);
 327               action->args.push_back(tmp);
 328             } else
 329               found = false;
 330             break;
 331           case 'd':
 332             if (*PI == "%defs%") {
 333               StringVector::iterator I = Defines.begin();
 334               StringVector::iterator E = Defines.end();
 335               while (I != E) {
 336                 action->args.push_back( std::string("-D") + *I);
 337                 ++I;
 338               }
 339             } else
 340               found = false;
 341             break;
 342           case 'f':
 343             if (*PI == "%fOpts%") {
 344               if (!fOptions.empty())
 345                 action->args.insert(action->args.end(), fOptions.begin(),
 346                                     fOptions.end());
 347             } else
 348               found = false;
 349             break;
 350           case 'i':
 351             if (*PI == "%in%") {
 352               action->args.push_back(input.toString());
 353             } else if (*PI == "%incls%") {
 354               PathVector::iterator I = IncludePaths.begin();
 355               PathVector::iterator E = IncludePaths.end();
 356               while (I != E) {
 357                 action->args.push_back( std::string("-I") + I->toString() );
 358                 ++I;
 359               }
 360             } else
 361               found = false;
 362             break;
 363           case 'l':
 364             if ((*PI)[1] == 'l') {
 365               std::string tmp(*PI);
 366               if (*PI == "%llvmgccdir%")
 367                 tmp.replace(0,12,LLVMGCCDIR);
 368               else if (*PI == "%llvmgccarch%")
 369                 tmp.replace(0,13,LLVMGCCARCH);
 370               else if (*PI == "%llvmgcc%")
 371                 tmp.replace(0,9,LLVMGCC);
 372               else if (*PI == "%llvmgxx%")
 373                 tmp.replace(0,9,LLVMGXX);
 374               else if (*PI == "%llvmcc1%")
 375                 tmp.replace(0,9,LLVMCC1);
 376               else if (*PI == "%llvmcc1plus%")
 377                 tmp.replace(0,9,LLVMCC1);
 378               else
 379                 found = false;
 380               if (found)
 381                 action->args.push_back(tmp);
 382             } else if (*PI == "%libs%") {
 383               PathVector::iterator I = LibraryPaths.begin();
 384               PathVector::iterator E = LibraryPaths.end();
 385               while (I != E) {
 386                 action->args.push_back( std::string("-L") + I->toString() );
 387                 ++I;
 388               }
 389             } else if (*PI == "%libdir%") {
 390               std::string tmp(*PI);
 391               tmp.replace(0,8,LLVM_LIBDIR);
 392               action->args.push_back(tmp);
 393             } else
 394               found = false;
 395             break;
 396           case 'o':
 397             if (*PI == "%out%") {
 398               action->args.push_back(output.toString());
 399             } else if (*PI == "%opt%") {
 400               if (!isSet(EMIT_RAW_FLAG)) {
 401                 if (cd->opts.size() > static_cast<unsigned>(optLevel) &&
 402                     !cd->opts[optLevel].empty())
 403                   action->args.insert(action->args.end(),
 404                                       cd->opts[optLevel].begin(),
 405                                       cd->opts[optLevel].end());
 406                 else
 407                   throw std::string("Optimization options for level ") +
 408                         utostr(unsigned(optLevel)) + " were not specified";
 409               }
 410             } else
 411               found = false;
 412             break;
 413           case 's':
 414             if (*PI == "%stats%") {
 415               if (isSet(SHOW_STATS_FLAG))
 416                 action->args.push_back("-stats");
 417             } else
 418               found = false;
 419             break;
 420           case 't':
 421             if (*PI == "%target%") {
 422               action->args.push_back(std::string("-march=") + machine);
 423             } else if (*PI == "%time%") {
 424               if (isSet(TIME_PASSES_FLAG))
 425                 action->args.push_back("-time-passes");
 426             } else
 427               found = false;
 428             break;
 429           case 'v':
 430             if (*PI == "%verbose%") {
 431               if (isSet(VERBOSE_FLAG))
 432                 action->args.push_back("-v");
 433             } else
 434               found  = false;
 435             break;
 436           case 'M':
 437             if (*PI == "%Mopts%") {
 438               if (!MOptions.empty())
 439                 action->args.insert(action->args.end(), MOptions.begin(),
 440                                     MOptions.end());
 441             } else
 442               found = false;
 443             break;
 444           case 'W':
 445             if (*PI == "%Wopts%") {
 446               for (StringVector::iterator I = WOptions.begin(),
 447                    E = WOptions.end(); I != E ; ++I ) {
 448                 action->args.push_back(std::string("-W") + *I);
 449               }
 450             } else
 451               found = false;
 452             break;
 453           default:
 454             found = false;
 455             break;
 456         }
 457         if (!found) {
 458           // Did it even look like a substitution?
 459           if (PI->length()>1 && (*PI)[0] == '%' &&
 460               (*PI)[PI->length()-1] == '%') {
 461             throw std::string("Invalid substitution token: '") + *PI +
 462                   "' for command '" + pat->program.toString() + "'";
 463           } else if (!PI->empty()) {
 464             // It's not a legal substitution, just pass it through
 465             action->args.push_back(*PI);
 466           }
 467         }
 468       } else if (!PI->empty()) {
 469         // Its not a substitution, just put it in the action
 470         action->args.push_back(*PI);
 471       }
 472       PI++;
 473     }
 474
 475     // Finally, we're done
 476     return action;
 477   }
 478
 479   int DoAction(Action*action, std::string& ErrMsg) {
 480     assert(action != 0 && "Invalid Action!");
 481     if (isSet(VERBOSE_FLAG))
 482       WriteAction(action);
 483     if (!isSet(DRY_RUN_FLAG)) {
 484       sys::Path progpath = sys::Program::FindProgramByName(
 485         action->program.toString());
 486       if (progpath.isEmpty())
 487         throw std::string("Can't find program '" +
 488                           action->program.toString()+"'");
 489       else if (progpath.canExecute())
 490         action->program = progpath;
 491       else
 492         throw std::string("Program '"+action->program.toString()+
 493                           "' is not executable.");
 494
 495       // Invoke the program
 496       const char** Args = (const char**)
 497         alloca(sizeof(const char*)*(action->args.size()+2));
 498       Args[0] = action->program.toString().c_str();
 499       for (unsigned i = 1; i <= action->args.size(); ++i)
 500         Args[i] = action->args[i-1].c_str();
 501       Args[action->args.size()+1] = 0;  // null terminate list.
 502       if (isSet(TIME_ACTIONS_FLAG)) {
 503         Timer timer(action->program.toString());
 504         timer.startTimer();
 505         int resultCode =
 506           sys::Program::ExecuteAndWait(action->program, Args,0,0,0,0, &ErrMsg);
 507         timer.stopTimer();
 508         timer.print(timer,std::cerr);
 509         return resultCode;
 510       }
 511       else
 512         return
 513           sys::Program::ExecuteAndWait(action->program, Args, 0,0,0,0, &ErrMsg);
 514     }
 515     return 0;
 516   }
 517
 518   /// This method tries various variants of a linkage item's file
 519   /// name to see if it can find an appropriate file to link with
 520   /// in the directories of the LibraryPaths.
 521   llvm::sys::Path GetPathForLinkageItem(const std::string& link_item,
 522                                         bool native = false) {
 523     sys::Path fullpath;
 524     fullpath.set(link_item);
 525     if (fullpath.canRead())
 526       return fullpath;
 527     for (PathVector::iterator PI = LibraryPaths.begin(),
 528          PE = LibraryPaths.end(); PI != PE; ++PI) {
 529       fullpath.set(PI->toString());
 530       fullpath.appendComponent(link_item);
 531       if (fullpath.canRead())
 532         return fullpath;
 533       if (native) {
 534         fullpath.appendSuffix("a");
 535       } else {
 536         fullpath.appendSuffix("bc");
 537         if (fullpath.canRead())
 538           return fullpath;
 539         fullpath.eraseSuffix();
 540         fullpath.appendSuffix("o");
 541         if (fullpath.canRead())
 542           return fullpath;
 543         fullpath = *PI;
 544         fullpath.appendComponent(std::string("lib") + link_item);
 545         fullpath.appendSuffix("a");
 546         if (fullpath.canRead())
 547           return fullpath;
 548         fullpath.eraseSuffix();
 549         fullpath.appendSuffix("so");
 550         if (fullpath.canRead())
 551           return fullpath;
 552       }
 553     }
 554
 555     // Didn't find one.
 556     fullpath.clear();
 557     return fullpath;
 558   }
 559
 560   /// This method processes a linkage item. The item could be a
 561   /// Bitcode file needing translation to native code and that is
 562   /// dependent on other bitcode libraries, or a native code
 563   /// library that should just be linked into the program.
 564   bool ProcessLinkageItem(const llvm::sys::Path& link_item,
 565                           SetVector<sys::Path>& set,
 566                           std::string& err) {
 567     // First, see if the unadorned file name is not readable. If so,
 568     // we must track down the file in the lib search path.
 569     sys::Path fullpath;
 570     if (!link_item.canRead()) {
 571       // look for the library using the -L arguments specified
 572       // on the command line.
 573       fullpath = GetPathForLinkageItem(link_item.toString());
 574
 575       // If we didn't find the file in any of the library search paths
 576       // we have to bail. No where else to look.
 577       if (fullpath.isEmpty()) {
 578         err =
 579           std::string("Can't find linkage item '") + link_item.toString() + "'";
 580         return false;
 581       }
 582     } else {
 583       fullpath = link_item;
 584     }
 585
 586     // If we got here fullpath is the path to the file, and its readable.
 587     set.insert(fullpath);
 588
 589     // If its an LLVM bitcode file ...
 590     if (fullpath.isBitcodeFile()) {
 591       // Process the dependent libraries recursively
 592       Module::LibraryListType modlibs;
 593       if (GetBitcodeDependentLibraries(fullpath.toString(),modlibs, &err)) {
 594         // Traverse the dependent libraries list
 595         Module::lib_iterator LI = modlibs.begin();
 596         Module::lib_iterator LE = modlibs.end();
 597         while ( LI != LE ) {
 598           if (!ProcessLinkageItem(sys::Path(*LI),set,err)) {
 599             if (err.empty()) {
 600               err = std::string("Library '") + *LI +
 601                     "' is not valid for linking but is required by file '" +
 602                     fullpath.toString() + "'";
 603             } else {
 604               err += " which is required by file '" + fullpath.toString() + "'";
 605             }
 606             return false;
 607           }
 608           ++LI;
 609         }
 610       } else if (err.empty()) {
 611         err = std::string(
 612           "The dependent libraries could not be extracted from '") +
 613           fullpath.toString();
 614         return false;
 615       } else
 616         return false;
 617     }
 618     return true;
 619   }
 620
 621 /// @}
 622 /// @name Methods
 623 /// @{
 624 public:
 625   virtual int execute(const InputList& InpList, const sys::Path& Output, std::string& ErrMsg ) {
 626     try {
 627       // Echo the configuration of options if we're running verbose
 628       if (isSet(DEBUG_FLAG)) {
 629         std::cerr << "Compiler Driver Options:\n";
 630         std::cerr << "DryRun = " << isSet(DRY_RUN_FLAG) << "\n";
 631         std::cerr << "Verbose = " << isSet(VERBOSE_FLAG) << " \n";
 632         std::cerr << "TimeActions = " << isSet(TIME_ACTIONS_FLAG) << "\n";
 633         std::cerr << "TimePasses = " << isSet(TIME_PASSES_FLAG) << "\n";
 634         std::cerr << "ShowStats = " << isSet(SHOW_STATS_FLAG) << "\n";
 635         std::cerr << "EmitRawCode = " << isSet(EMIT_RAW_FLAG) << "\n";
 636         std::cerr << "EmitNativeCode = " << isSet(EMIT_NATIVE_FLAG) << "\n";
 637         std::cerr << "KeepTemps = " << isSet(KEEP_TEMPS_FLAG) << "\n";
 638         std::cerr << "OutputMachine = " << machine << "\n";
 639         InputList::const_iterator I = InpList.begin();
 640         while ( I != InpList.end() ) {
 641           std::cerr << "Input: " << I->first << "(" << I->second
 642                     << ")\n";
 643           ++I;
 644         }
 645         std::cerr << "Output: " << Output << "\n";
 646       }
 647
 648       // If there's no input, we're done.
 649       if (InpList.empty())
 650         throw std::string("Nothing to compile.");
 651
 652       // If they are asking for linking and didn't provide an output
 653       // file then its an error (no way for us to "make up" a meaningful
 654       // file name based on the various linker input files).
 655       if (finalPhase == LINKING && Output.isEmpty())
 656         throw std::string(
 657           "An output file name must be specified for linker output");
 658
 659       // If they are not asking for linking, provided an output file and
 660       // there is more than one input file, its an error
 661       if (finalPhase != LINKING && !Output.isEmpty() && InpList.size() > 1)
 662         throw std::string("An output file name cannot be specified ") +
 663           "with more than one input file name when not linking";
 664
 665       // This vector holds all the resulting actions of the following loop.
 666       std::vector<Action*> actions;
 667
 668       /// PRE-PROCESSING / TRANSLATION / OPTIMIZATION / ASSEMBLY phases
 669       // for each input item
 670       SetVector<sys::Path> LinkageItems;
 671       StringVector LibFiles;
 672       InputList::const_iterator I = InpList.begin();
 673       for (InputList::const_iterator I = InpList.begin(), E = InpList.end();
 674            I != E; ++I ) {
 675         // Get the suffix of the file name
 676         const std::string& ftype = I->second;
 677
 678         // If its a library, bitcode file, or object file, save
 679         // it for linking below and short circuit the
 680         // pre-processing/translation/assembly phases
 681         if (ftype.empty() ||  ftype == "o" || ftype == "bc" || ftype=="a") {
 682           // We shouldn't get any of these types of files unless we're
 683           // later going to link. Enforce this limit now.
 684           if (finalPhase != LINKING) {
 685             throw std::string(
 686               "Pre-compiled objects found but linking not requested");
 687           }
 688           if (ftype.empty())
 689             LibFiles.push_back(I->first.toString());
 690           else
 691             LinkageItems.insert(I->first);
 692           continue; // short circuit remainder of loop
 693         }
 694
 695         // At this point, we know its something we need to translate
 696         // and/or optimize. See if we can get the configuration data
 697         // for this kind of file.
 698         ConfigData* cd = cdp->ProvideConfigData(I->second);
 699         if (cd == 0)
 700           throw std::string("Files of type '") + I->second +
 701                 "' are not recognized.";
 702         if (isSet(DEBUG_FLAG))
 703           DumpConfigData(cd,I->second);
 704
 705         // Add the config data's library paths to the end of the list
 706         for (StringVector::iterator LPI = cd->libpaths.begin(),
 707              LPE = cd->libpaths.end(); LPI != LPE; ++LPI){
 708           LibraryPaths.push_back(sys::Path(*LPI));
 709         }
 710
 711         // Initialize the input and output files
 712         sys::Path InFile(I->first);
 713         sys::Path OutFile(I->first.getBasename());
 714
 715         // PRE-PROCESSING PHASE
 716         Action& action = cd->PreProcessor;
 717
 718         // Get the preprocessing action, if needed, or error if appropriate
 719         if (!action.program.isEmpty()) {
 720           if (action.isSet(REQUIRED_FLAG) || finalPhase == PREPROCESSING) {
 721             if (finalPhase == PREPROCESSING) {
 722               if (Output.isEmpty()) {
 723                 OutFile.appendSuffix("E");
 724                 actions.push_back(GetAction(cd,InFile,OutFile,PREPROCESSING));
 725               } else {
 726                 actions.push_back(GetAction(cd,InFile,Output,PREPROCESSING));
 727               }
 728             } else {
 729               sys::Path TempFile(
 730                   MakeTempFile(I->first.getBasename(),"E",&ErrMsg));
 731               if (TempFile.isEmpty())
 732                 return 1;
 733               actions.push_back(GetAction(cd,InFile,TempFile,
 734                 PREPROCESSING));
 735               InFile = TempFile;
 736             }
 737           }
 738         } else if (finalPhase == PREPROCESSING) {
 739           throw cd->langName + " does not support pre-processing";
 740         } else if (action.isSet(REQUIRED_FLAG)) {
 741           throw std::string("Don't know how to pre-process ") +
 742                 cd->langName + " files";
 743         }
 744
 745         // Short-circuit remaining actions if all they want is
 746         // pre-processing
 747         if (finalPhase == PREPROCESSING) { continue; };
 748
 749         /// TRANSLATION PHASE
 750         action = cd->Translator;
 751
 752         // Get the translation action, if needed, or error if appropriate
 753         if (!action.program.isEmpty()) {
 754           if (action.isSet(REQUIRED_FLAG) || finalPhase == TRANSLATION) {
 755             if (finalPhase == TRANSLATION) {
 756               if (Output.isEmpty()) {
 757                 OutFile.appendSuffix("o");
 758                 actions.push_back(GetAction(cd,InFile,OutFile,TRANSLATION));
 759               } else {
 760                 actions.push_back(GetAction(cd,InFile,Output,TRANSLATION));
 761               }
 762             } else {
 763               sys::Path TempFile(
 764                   MakeTempFile(I->first.getBasename(),"trans", &ErrMsg));
 765               if (TempFile.isEmpty())
 766                 return 1;
 767               actions.push_back(GetAction(cd,InFile,TempFile,TRANSLATION));
 768               InFile = TempFile;
 769             }
 770
 771             // ll -> bc Helper
 772             if (action.isSet(OUTPUT_IS_ASM_FLAG)) {
 773               /// The output of the translator is an LLVM Assembly program
 774               /// We need to translate it to bitcode
 775               Action* action = new Action();
 776               action->program.set("llvm-as");
 777               action->args.push_back(InFile.toString());
 778               action->args.push_back("-o");
 779               InFile.appendSuffix("bc");
 780               action->args.push_back(InFile.toString());
 781               actions.push_back(action);
 782             }
 783           }
 784         } else if (finalPhase == TRANSLATION) {
 785           throw cd->langName + " does not support translation";
 786         } else if (action.isSet(REQUIRED_FLAG)) {
 787           throw std::string("Don't know how to translate ") +
 788                 cd->langName + " files";
 789         }
 790
 791         // Short-circuit remaining actions if all they want is translation
 792         if (finalPhase == TRANSLATION) { continue; }
 793
 794         /// OPTIMIZATION PHASE
 795         action = cd->Optimizer;
 796
 797         // Get the optimization action, if needed, or error if appropriate
 798         if (!isSet(EMIT_RAW_FLAG)) {
 799           if (!action.program.isEmpty()) {
 800             if (action.isSet(REQUIRED_FLAG) || finalPhase == OPTIMIZATION) {
 801               if (finalPhase == OPTIMIZATION) {
 802                 if (Output.isEmpty()) {
 803                   OutFile.appendSuffix("o");
 804                   actions.push_back(GetAction(cd,InFile,OutFile,OPTIMIZATION));
 805                 } else {
 806                   actions.push_back(GetAction(cd,InFile,Output,OPTIMIZATION));
 807                 }
 808               } else {
 809                 sys::Path TempFile(
 810                   MakeTempFile(I->first.getBasename(),"opt", &ErrMsg));
 811                 if (TempFile.isEmpty())
 812                   return 1;
 813                 actions.push_back(GetAction(cd,InFile,TempFile,OPTIMIZATION));
 814                 InFile = TempFile;
 815               }
 816               // ll -> bc Helper
 817               if (action.isSet(OUTPUT_IS_ASM_FLAG)) {
 818                 /// The output of the optimizer is an LLVM Assembly program
 819                 /// We need to translate it to bitcode with llvm-as
 820                 Action* action = new Action();
 821                 action->program.set("llvm-as");
 822                 action->args.push_back(InFile.toString());
 823                 action->args.push_back("-f");
 824                 action->args.push_back("-o");
 825                 InFile.appendSuffix("bc");
 826                 action->args.push_back(InFile.toString());
 827                 actions.push_back(action);
 828               }
 829             }
 830           } else if (finalPhase == OPTIMIZATION) {
 831             throw cd->langName + " does not support optimization";
 832           } else if (action.isSet(REQUIRED_FLAG)) {
 833             throw std::string("Don't know how to optimize ") +
 834                 cd->langName + " files";
 835           }
 836         }
 837
 838         // Short-circuit remaining actions if all they want is optimization
 839         if (finalPhase == OPTIMIZATION) { continue; }
 840
 841         /// ASSEMBLY PHASE
 842         action = cd->Assembler;
 843
 844         if (finalPhase == ASSEMBLY) {
 845
 846           // Build either a native compilation action or a disassembly action
 847           Action* action = new Action();
 848           if (isSet(EMIT_NATIVE_FLAG)) {
 849             // Use llc to get the native assembly file
 850             action->program.set("llc");
 851             action->args.push_back(InFile.toString());
 852             action->args.push_back("-f");
 853             action->args.push_back("-o");
 854             if (Output.isEmpty()) {
 855               OutFile.appendSuffix("o");
 856               action->args.push_back(OutFile.toString());
 857             } else {
 858               action->args.push_back(Output.toString());
 859             }
 860             actions.push_back(action);
 861           } else {
 862             // Just convert back to llvm assembly with llvm-dis
 863             action->program.set("llvm-dis");
 864             action->args.push_back(InFile.toString());
 865             action->args.push_back("-f");
 866             action->args.push_back("-o");
 867             if (Output.isEmpty()) {
 868               OutFile.appendSuffix("ll");
 869               action->args.push_back(OutFile.toString());
 870             } else {
 871               action->args.push_back(Output.toString());
 872             }
 873           }
 874
 875           // Put the action on the list
 876           actions.push_back(action);
 877
 878           // Short circuit the rest of the loop, we don't want to link
 879           continue;
 880         }
 881
 882         // Register the result of the actions as a link candidate
 883         LinkageItems.insert(InFile);
 884
 885       } // end while loop over each input file
 886
 887       /// RUN THE COMPILATION ACTIONS
 888       std::vector<Action*>::iterator AI = actions.begin();
 889       std::vector<Action*>::iterator AE = actions.end();
 890       while (AI != AE) {
 891         int ActionResult = DoAction(*AI, ErrMsg);
 892         if (ActionResult != 0)
 893           return ActionResult;
 894         AI++;
 895       }
 896
 897       /// LINKING PHASE
 898       if (finalPhase == LINKING) {
 899
 900         // Insert the platform-specific system libraries to the path list
 901         std::vector<sys::Path> SysLibs;
 902         sys::Path::GetSystemLibraryPaths(SysLibs);
 903         LibraryPaths.insert(LibraryPaths.end(), SysLibs.begin(), SysLibs.end());
 904
 905         // Set up the linking action with llvm-ld
 906         Action* link = new Action();
 907         link->program.set("llvm-ld");
 908
 909         // Add in the optimization level requested
 910         switch (optLevel) {
 911           case OPT_FAST_COMPILE:
 912             link->args.push_back("-O1");
 913             break;
 914           case OPT_SIMPLE:
 915             link->args.push_back("-O2");
 916             break;
 917           case OPT_AGGRESSIVE:
 918             link->args.push_back("-O3");
 919             break;
 920           case OPT_LINK_TIME:
 921             link->args.push_back("-O4");
 922             break;
 923           case OPT_AGGRESSIVE_LINK_TIME:
 924             link->args.push_back("-O5");
 925             break;
 926           case OPT_NONE:
 927             break;
 928         }
 929
 930         // Add in all the linkage items we generated. This includes the
 931         // output from the translation/optimization phases as well as any
 932         // -l arguments specified.
 933         for (PathVector::const_iterator I=LinkageItems.begin(),
 934              E=LinkageItems.end(); I != E; ++I )
 935           link->args.push_back(I->toString());
 936
 937         // Add in all the libraries we found.
 938         for (StringVector::const_iterator I=LibFiles.begin(),
 939              E=LibFiles.end(); I != E; ++I )
 940           link->args.push_back(std::string("-l")+*I);
 941
 942         // Add in all the library paths to the command line
 943         for (PathVector::const_iterator I=LibraryPaths.begin(),
 944              E=LibraryPaths.end(); I != E; ++I)
 945           link->args.push_back( std::string("-L") + I->toString());
 946
 947         // Add in the additional linker arguments requested
 948         for (StringVector::const_iterator I=AdditionalArgs[LINKING].begin(),
 949              E=AdditionalArgs[LINKING].end(); I != E; ++I)
 950           link->args.push_back( *I );
 951
 952         // Add in other optional flags
 953         if (isSet(EMIT_NATIVE_FLAG))
 954           link->args.push_back("-native");
 955         if (isSet(VERBOSE_FLAG))
 956           link->args.push_back("-v");
 957         if (isSet(TIME_PASSES_FLAG))
 958           link->args.push_back("-time-passes");
 959         if (isSet(SHOW_STATS_FLAG))
 960           link->args.push_back("-stats");
 961         if (isSet(STRIP_OUTPUT_FLAG))
 962           link->args.push_back("-s");
 963         if (isSet(DEBUG_FLAG)) {
 964           link->args.push_back("-debug");
 965           link->args.push_back("-debug-pass=Details");
 966         }
 967
 968         // Add in mandatory flags
 969         link->args.push_back("-o");
 970         link->args.push_back(Output.toString());
 971
 972         // Execute the link
 973         int ActionResult = DoAction(link, ErrMsg);
 974         if (ActionResult != 0)
 975           return ActionResult;
 976       }
 977     } catch (std::string& msg) {
 978       cleanup();
 979       throw;
 980     } catch (...) {
 981       cleanup();
 982       throw std::string("Unspecified error");
 983     }
 984     cleanup();
 985     return 0;
 986   }
 987
 988 /// @}
 989 /// @name Data
 990 /// @{
 991 private:
 992   ConfigDataProvider* cdp;      ///< Where we get configuration data from
 993   Phases finalPhase;            ///< The final phase of compilation
 994   OptimizationLevels optLevel;  ///< The optimization level to apply
 995   unsigned Flags;               ///< The driver flags
 996   std::string machine;          ///< Target machine name
 997   PathVector LibraryPaths;      ///< -L options
 998   PathVector IncludePaths;      ///< -I options
 999   PathVector ToolPaths;         ///< -B options
1000   StringVector Defines;         ///< -D options
1001   sys::PathWithStatus TempDir;  ///< Name of the temporary directory.
1002   StringTable AdditionalArgs;   ///< The -Txyz options
1003   StringVector fOptions;        ///< -f options
1004   StringVector MOptions;        ///< -M options
1005   StringVector WOptions;        ///< -W options
1006
1007 /// @}
1008 };
1009 }
1010
1011 CompilerDriver::~CompilerDriver() {
1012 }
1013
1014 CompilerDriver::ConfigDataProvider::~ConfigDataProvider() {}
1015
1016 CompilerDriver*
1017 CompilerDriver::Get(ConfigDataProvider& CDP) {
1018   return new CompilerDriverImpl(CDP);
1019 }
1020
1021 CompilerDriver::ConfigData::ConfigData()
1022   : langName()
1023   , PreProcessor()
1024   , Translator()
1025   , Optimizer()
1026   , Assembler()
1027   , Linker()
1028 {
1029   StringVector emptyVec;
1030   for (unsigned i = 0; i < NUM_PHASES; ++i)
1031     opts.push_back(emptyVec);
1032 }