1193326Sed//===-- driver.cpp - Clang GCC-Compatible Driver --------------------------===// 2193326Sed// 3193326Sed// The LLVM Compiler Infrastructure 4193326Sed// 5193326Sed// This file is distributed under the University of Illinois Open Source 6193326Sed// License. See LICENSE.TXT for details. 7193326Sed// 8193326Sed//===----------------------------------------------------------------------===// 9193326Sed// 10193326Sed// This is the entry point to the clang driver; it is a thin wrapper 11193326Sed// for functionality in the Driver clang library. 12193326Sed// 13193326Sed//===----------------------------------------------------------------------===// 14193326Sed 15252723Sdim#include "clang/Basic/CharInfo.h" 16245431Sdim#include "clang/Basic/DiagnosticOptions.h" 17193326Sed#include "clang/Driver/Compilation.h" 18193326Sed#include "clang/Driver/Driver.h" 19252723Sdim#include "clang/Driver/DriverDiagnostic.h" 20252723Sdim#include "clang/Driver/Options.h" 21235633Sdim#include "clang/Frontend/CompilerInvocation.h" 22204643Srdivacky#include "clang/Frontend/TextDiagnosticPrinter.h" 23235633Sdim#include "clang/Frontend/Utils.h" 24221345Sdim#include "llvm/ADT/ArrayRef.h" 25252723Sdim#include "llvm/ADT/OwningPtr.h" 26193326Sed#include "llvm/ADT/SmallString.h" 27212904Sdim#include "llvm/ADT/SmallVector.h" 28263509Sdim#include "llvm/ADT/STLExtras.h" 29263509Sdim#include "llvm/Option/ArgList.h" 30263509Sdim#include "llvm/Option/OptTable.h" 31263509Sdim#include "llvm/Option/Option.h" 32263509Sdim#include "llvm/Support/CommandLine.h" 33212904Sdim#include "llvm/Support/ErrorHandling.h" 34218893Sdim#include "llvm/Support/FileSystem.h" 35252723Sdim#include "llvm/Support/Host.h" 36193326Sed#include "llvm/Support/ManagedStatic.h" 37212904Sdim#include "llvm/Support/MemoryBuffer.h" 38252723Sdim#include "llvm/Support/Path.h" 39193326Sed#include "llvm/Support/PrettyStackTrace.h" 40263509Sdim#include "llvm/Support/Process.h" 41252723Sdim#include "llvm/Support/Program.h" 42204643Srdivacky#include "llvm/Support/Regex.h" 43218893Sdim#include "llvm/Support/Signals.h" 44226890Sdim#include "llvm/Support/TargetRegistry.h" 45226890Sdim#include "llvm/Support/TargetSelect.h" 46252723Sdim#include "llvm/Support/Timer.h" 47252723Sdim#include "llvm/Support/raw_ostream.h" 48218893Sdim#include "llvm/Support/system_error.h" 49193326Sedusing namespace clang; 50193326Sedusing namespace clang::driver; 51263509Sdimusing namespace llvm::opt; 52193326Sed 53263509Sdimstd::string GetExecutablePath(const char *Argv0, bool CanonicalPrefixes) { 54200583Srdivacky if (!CanonicalPrefixes) 55263509Sdim return Argv0; 56200583Srdivacky 57193326Sed // This just needs to be some symbol in the binary; C++ doesn't 58193326Sed // allow taking the address of ::main however. 59193326Sed void *P = (void*) (intptr_t) GetExecutablePath; 60263509Sdim return llvm::sys::fs::getMainExecutable(Argv0, P); 61193326Sed} 62193326Sed 63198092Srdivackystatic const char *SaveStringInSet(std::set<std::string> &SavedStrings, 64226890Sdim StringRef S) { 65193326Sed return SavedStrings.insert(S).first->c_str(); 66193326Sed} 67193326Sed 68193326Sed/// ApplyQAOverride - Apply a list of edits to the input argument lists. 69193326Sed/// 70193326Sed/// The input string is a space separate list of edits to perform, 71193326Sed/// they are applied in order to the input argument lists. Edits 72193326Sed/// should be one of the following forms: 73193326Sed/// 74198092Srdivacky/// '#': Silence information about the changes to the command line arguments. 75198092Srdivacky/// 76193326Sed/// '^': Add FOO as a new argument at the beginning of the command line. 77193326Sed/// 78193326Sed/// '+': Add FOO as a new argument at the end of the command line. 79193326Sed/// 80204643Srdivacky/// 's/XXX/YYY/': Substitute the regular expression XXX with YYY in the command 81204643Srdivacky/// line. 82193326Sed/// 83193326Sed/// 'xOPTION': Removes all instances of the literal argument OPTION. 84193326Sed/// 85193326Sed/// 'XOPTION': Removes all instances of the literal argument OPTION, 86193326Sed/// and the following argument. 87193326Sed/// 88193326Sed/// 'Ox': Removes all flags matching 'O' or 'O[sz0-9]' and adds 'Ox' 89193326Sed/// at the end of the command line. 90198092Srdivacky/// 91198092Srdivacky/// \param OS - The stream to write edit information to. 92198092Srdivacky/// \param Args - The vector of command line arguments. 93198092Srdivacky/// \param Edit - The override command to perform. 94198092Srdivacky/// \param SavedStrings - Set to use for storing string representations. 95226890Sdimstatic void ApplyOneQAOverride(raw_ostream &OS, 96226890Sdim SmallVectorImpl<const char*> &Args, 97226890Sdim StringRef Edit, 98206084Srdivacky std::set<std::string> &SavedStrings) { 99193326Sed // This does not need to be efficient. 100193326Sed 101198092Srdivacky if (Edit[0] == '^') { 102198092Srdivacky const char *Str = 103204643Srdivacky SaveStringInSet(SavedStrings, Edit.substr(1)); 104198092Srdivacky OS << "### Adding argument " << Str << " at beginning\n"; 105198092Srdivacky Args.insert(Args.begin() + 1, Str); 106198092Srdivacky } else if (Edit[0] == '+') { 107198092Srdivacky const char *Str = 108204643Srdivacky SaveStringInSet(SavedStrings, Edit.substr(1)); 109198092Srdivacky OS << "### Adding argument " << Str << " at end\n"; 110198092Srdivacky Args.push_back(Str); 111204643Srdivacky } else if (Edit[0] == 's' && Edit[1] == '/' && Edit.endswith("/") && 112226890Sdim Edit.slice(2, Edit.size()-1).find('/') != StringRef::npos) { 113226890Sdim StringRef MatchPattern = Edit.substr(2).split('/').first; 114226890Sdim StringRef ReplPattern = Edit.substr(2).split('/').second; 115204643Srdivacky ReplPattern = ReplPattern.slice(0, ReplPattern.size()-1); 116204643Srdivacky 117204643Srdivacky for (unsigned i = 1, e = Args.size(); i != e; ++i) { 118204643Srdivacky std::string Repl = llvm::Regex(MatchPattern).sub(ReplPattern, Args[i]); 119204643Srdivacky 120204643Srdivacky if (Repl != Args[i]) { 121204643Srdivacky OS << "### Replacing '" << Args[i] << "' with '" << Repl << "'\n"; 122204643Srdivacky Args[i] = SaveStringInSet(SavedStrings, Repl); 123204643Srdivacky } 124204643Srdivacky } 125198092Srdivacky } else if (Edit[0] == 'x' || Edit[0] == 'X') { 126198092Srdivacky std::string Option = Edit.substr(1, std::string::npos); 127198092Srdivacky for (unsigned i = 1; i < Args.size();) { 128198092Srdivacky if (Option == Args[i]) { 129198092Srdivacky OS << "### Deleting argument " << Args[i] << '\n'; 130198092Srdivacky Args.erase(Args.begin() + i); 131198092Srdivacky if (Edit[0] == 'X') { 132198092Srdivacky if (i < Args.size()) { 133198092Srdivacky OS << "### Deleting argument " << Args[i] << '\n'; 134198092Srdivacky Args.erase(Args.begin() + i); 135198092Srdivacky } else 136198092Srdivacky OS << "### Invalid X edit, end of command line!\n"; 137198092Srdivacky } 138198092Srdivacky } else 139198092Srdivacky ++i; 140198092Srdivacky } 141198092Srdivacky } else if (Edit[0] == 'O') { 142198092Srdivacky for (unsigned i = 1; i < Args.size();) { 143198092Srdivacky const char *A = Args[i]; 144198092Srdivacky if (A[0] == '-' && A[1] == 'O' && 145198092Srdivacky (A[2] == '\0' || 146198092Srdivacky (A[3] == '\0' && (A[2] == 's' || A[2] == 'z' || 147198092Srdivacky ('0' <= A[2] && A[2] <= '9'))))) { 148198092Srdivacky OS << "### Deleting argument " << Args[i] << '\n'; 149198092Srdivacky Args.erase(Args.begin() + i); 150198092Srdivacky } else 151198092Srdivacky ++i; 152198092Srdivacky } 153198092Srdivacky OS << "### Adding argument " << Edit << " at end\n"; 154204643Srdivacky Args.push_back(SaveStringInSet(SavedStrings, '-' + Edit.str())); 155198092Srdivacky } else { 156198092Srdivacky OS << "### Unrecognized edit: " << Edit << "\n"; 157198092Srdivacky } 158193326Sed} 159193326Sed 160193326Sed/// ApplyQAOverride - Apply a comma separate list of edits to the 161193326Sed/// input argument lists. See ApplyOneQAOverride. 162226890Sdimstatic void ApplyQAOverride(SmallVectorImpl<const char*> &Args, 163206084Srdivacky const char *OverrideStr, 164206084Srdivacky std::set<std::string> &SavedStrings) { 165226890Sdim raw_ostream *OS = &llvm::errs(); 166193326Sed 167198092Srdivacky if (OverrideStr[0] == '#') { 168198092Srdivacky ++OverrideStr; 169198092Srdivacky OS = &llvm::nulls(); 170198092Srdivacky } 171198092Srdivacky 172198092Srdivacky *OS << "### QA_OVERRIDE_GCC3_OPTIONS: " << OverrideStr << "\n"; 173198092Srdivacky 174193326Sed // This does not need to be efficient. 175193326Sed 176193326Sed const char *S = OverrideStr; 177193326Sed while (*S) { 178193326Sed const char *End = ::strchr(S, ' '); 179193326Sed if (!End) 180193326Sed End = S + strlen(S); 181193326Sed if (End != S) 182198092Srdivacky ApplyOneQAOverride(*OS, Args, std::string(S, End), SavedStrings); 183193326Sed S = End; 184193326Sed if (*S != '\0') 185193326Sed ++S; 186193326Sed } 187193326Sed} 188193326Sed 189199990Srdivackyextern int cc1_main(const char **ArgBegin, const char **ArgEnd, 190199990Srdivacky const char *Argv0, void *MainAddr); 191208600Srdivackyextern int cc1as_main(const char **ArgBegin, const char **ArgEnd, 192208600Srdivacky const char *Argv0, void *MainAddr); 193199512Srdivacky 194226890Sdimstatic void ParseProgName(SmallVectorImpl<const char *> &ArgVector, 195221345Sdim std::set<std::string> &SavedStrings, 196221345Sdim Driver &TheDriver) 197221345Sdim{ 198221345Sdim // Try to infer frontend type and default target from the program name. 199221345Sdim 200221345Sdim // suffixes[] contains the list of known driver suffixes. 201221345Sdim // Suffixes are compared against the program name in order. 202221345Sdim // If there is a match, the frontend type is updated as necessary (CPP/C++). 203221345Sdim // If there is no match, a second round is done after stripping the last 204221345Sdim // hyphen and everything following it. This allows using something like 205221345Sdim // "clang++-2.9". 206221345Sdim 207221345Sdim // If there is a match in either the first or second round, 208221345Sdim // the function tries to identify a target as prefix. E.g. 209221345Sdim // "x86_64-linux-clang" as interpreted as suffix "clang" with 210221345Sdim // target prefix "x86_64-linux". If such a target prefix is found, 211235633Sdim // is gets added via -target as implicit first argument. 212221345Sdim static const struct { 213221345Sdim const char *Suffix; 214263509Sdim const char *ModeFlag; 215221345Sdim } suffixes [] = { 216263509Sdim { "clang", 0 }, 217263509Sdim { "clang++", "--driver-mode=g++" }, 218263509Sdim { "clang-CC", "--driver-mode=g++" }, 219263509Sdim { "clang-c++", "--driver-mode=g++" }, 220263509Sdim { "clang-cc", 0 }, 221263509Sdim { "clang-cpp", "--driver-mode=cpp" }, 222263509Sdim { "clang-g++", "--driver-mode=g++" }, 223263509Sdim { "clang-gcc", 0 }, 224263509Sdim { "clang-cl", "--driver-mode=cl" }, 225263509Sdim { "CC", "--driver-mode=g++" }, 226263509Sdim { "cc", 0 }, 227263509Sdim { "cpp", "--driver-mode=cpp" }, 228263509Sdim { "cl" , "--driver-mode=cl" }, 229263509Sdim { "++", "--driver-mode=g++" }, 230221345Sdim }; 231221345Sdim std::string ProgName(llvm::sys::path::stem(ArgVector[0])); 232263509Sdim#ifdef _WIN32 233263509Sdim std::transform(ProgName.begin(), ProgName.end(), ProgName.begin(), 234263509Sdim toLowercase); 235263509Sdim#endif 236226890Sdim StringRef ProgNameRef(ProgName); 237226890Sdim StringRef Prefix; 238221345Sdim 239221345Sdim for (int Components = 2; Components; --Components) { 240221345Sdim bool FoundMatch = false; 241221345Sdim size_t i; 242221345Sdim 243221345Sdim for (i = 0; i < sizeof(suffixes) / sizeof(suffixes[0]); ++i) { 244221345Sdim if (ProgNameRef.endswith(suffixes[i].Suffix)) { 245221345Sdim FoundMatch = true; 246263509Sdim SmallVectorImpl<const char *>::iterator it = ArgVector.begin(); 247263509Sdim if (it != ArgVector.end()) 248263509Sdim ++it; 249263509Sdim if (suffixes[i].ModeFlag) 250263509Sdim ArgVector.insert(it, suffixes[i].ModeFlag); 251221345Sdim break; 252221345Sdim } 253221345Sdim } 254221345Sdim 255221345Sdim if (FoundMatch) { 256226890Sdim StringRef::size_type LastComponent = ProgNameRef.rfind('-', 257221345Sdim ProgNameRef.size() - strlen(suffixes[i].Suffix)); 258226890Sdim if (LastComponent != StringRef::npos) 259221345Sdim Prefix = ProgNameRef.slice(0, LastComponent); 260221345Sdim break; 261221345Sdim } 262221345Sdim 263226890Sdim StringRef::size_type LastComponent = ProgNameRef.rfind('-'); 264226890Sdim if (LastComponent == StringRef::npos) 265221345Sdim break; 266221345Sdim ProgNameRef = ProgNameRef.slice(0, LastComponent); 267221345Sdim } 268221345Sdim 269221345Sdim if (Prefix.empty()) 270221345Sdim return; 271221345Sdim 272221345Sdim std::string IgnoredError; 273221345Sdim if (llvm::TargetRegistry::lookupTarget(Prefix, IgnoredError)) { 274226890Sdim SmallVectorImpl<const char *>::iterator it = ArgVector.begin(); 275224145Sdim if (it != ArgVector.end()) 276224145Sdim ++it; 277263509Sdim const char* Strings[] = 278263509Sdim { SaveStringInSet(SavedStrings, std::string("-target")), 279263509Sdim SaveStringInSet(SavedStrings, Prefix) }; 280263509Sdim ArgVector.insert(it, Strings, Strings + llvm::array_lengthof(Strings)); 281221345Sdim } 282221345Sdim} 283221345Sdim 284263509Sdimnamespace { 285263509Sdim class StringSetSaver : public llvm::cl::StringSaver { 286263509Sdim public: 287263509Sdim StringSetSaver(std::set<std::string> &Storage) : Storage(Storage) {} 288263509Sdim const char *SaveString(const char *Str) LLVM_OVERRIDE { 289263509Sdim return SaveStringInSet(Storage, Str); 290263509Sdim } 291263509Sdim private: 292263509Sdim std::set<std::string> &Storage; 293263509Sdim }; 294263509Sdim} 295263509Sdim 296212904Sdimint main(int argc_, const char **argv_) { 297193326Sed llvm::sys::PrintStackTraceOnErrorSignal(); 298212904Sdim llvm::PrettyStackTraceProgram X(argc_, argv_); 299193326Sed 300263509Sdim SmallVector<const char *, 256> argv; 301263509Sdim llvm::SpecificBumpPtrAllocator<char> ArgAllocator; 302263509Sdim llvm::error_code EC = llvm::sys::Process::GetArgumentVector( 303263509Sdim argv, llvm::ArrayRef<const char *>(argv_, argc_), ArgAllocator); 304263509Sdim if (EC) { 305263509Sdim llvm::errs() << "error: couldn't get arguments: " << EC.message() << '\n'; 306263509Sdim return 1; 307263509Sdim } 308263509Sdim 309212904Sdim std::set<std::string> SavedStrings; 310263509Sdim StringSetSaver Saver(SavedStrings); 311263509Sdim llvm::cl::ExpandResponseFiles(Saver, llvm::cl::TokenizeGNUCommandLine, argv); 312212904Sdim 313208600Srdivacky // Handle -cc1 integrated tools. 314226890Sdim if (argv.size() > 1 && StringRef(argv[1]).startswith("-cc1")) { 315226890Sdim StringRef Tool = argv[1] + 4; 316199990Srdivacky 317208600Srdivacky if (Tool == "") 318212904Sdim return cc1_main(argv.data()+2, argv.data()+argv.size(), argv[0], 319208600Srdivacky (void*) (intptr_t) GetExecutablePath); 320208600Srdivacky if (Tool == "as") 321212904Sdim return cc1as_main(argv.data()+2, argv.data()+argv.size(), argv[0], 322208600Srdivacky (void*) (intptr_t) GetExecutablePath); 323208600Srdivacky 324208600Srdivacky // Reject unknown tools. 325208600Srdivacky llvm::errs() << "error: unknown integrated tool '" << Tool << "'\n"; 326208600Srdivacky return 1; 327208600Srdivacky } 328208600Srdivacky 329200583Srdivacky bool CanonicalPrefixes = true; 330212904Sdim for (int i = 1, size = argv.size(); i < size; ++i) { 331226890Sdim if (StringRef(argv[i]) == "-no-canonical-prefixes") { 332200583Srdivacky CanonicalPrefixes = false; 333200583Srdivacky break; 334200583Srdivacky } 335200583Srdivacky } 336200583Srdivacky 337252723Sdim // Handle QA_OVERRIDE_GCC3_OPTIONS and CCC_ADD_ARGS, used for editing a 338252723Sdim // command line behind the scenes. 339252723Sdim if (const char *OverrideStr = ::getenv("QA_OVERRIDE_GCC3_OPTIONS")) { 340252723Sdim // FIXME: Driver shouldn't take extra initial argument. 341252723Sdim ApplyQAOverride(argv, OverrideStr, SavedStrings); 342252723Sdim } 343252723Sdim 344263509Sdim std::string Path = GetExecutablePath(argv[0], CanonicalPrefixes); 345200583Srdivacky 346245431Sdim IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions; 347235633Sdim { 348263509Sdim OwningPtr<OptTable> Opts(createDriverOptTable()); 349235633Sdim unsigned MissingArgIndex, MissingArgCount; 350263509Sdim OwningPtr<InputArgList> Args(Opts->ParseArgs(argv.begin()+1, argv.end(), 351263509Sdim MissingArgIndex, 352263509Sdim MissingArgCount)); 353235633Sdim // We ignore MissingArgCount and the return value of ParseDiagnosticArgs. 354235633Sdim // Any errors that would be diagnosed here will also be diagnosed later, 355235633Sdim // when the DiagnosticsEngine actually exists. 356245431Sdim (void) ParseDiagnosticArgs(*DiagOpts, *Args); 357235633Sdim } 358235633Sdim // Now we can create the DiagnosticsEngine with a properly-filled-out 359235633Sdim // DiagnosticOptions instance. 360212904Sdim TextDiagnosticPrinter *DiagClient 361245431Sdim = new TextDiagnosticPrinter(llvm::errs(), &*DiagOpts); 362263509Sdim 363263509Sdim // If the clang binary happens to be named cl.exe for compatibility reasons, 364263509Sdim // use clang-cl.exe as the prefix to avoid confusion between clang and MSVC. 365263509Sdim StringRef ExeBasename(llvm::sys::path::filename(Path)); 366263509Sdim if (ExeBasename.equals_lower("cl.exe")) 367263509Sdim ExeBasename = "clang-cl.exe"; 368263509Sdim DiagClient->setPrefix(ExeBasename); 369263509Sdim 370235633Sdim IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); 371235633Sdim 372245431Sdim DiagnosticsEngine Diags(DiagID, &*DiagOpts, DiagClient); 373252723Sdim ProcessWarningOptions(Diags, *DiagOpts, /*ReportDiags=*/false); 374193326Sed 375263509Sdim Driver TheDriver(Path, llvm::sys::getDefaultTargetTriple(), "a.out", Diags); 376193326Sed 377212904Sdim // Attempt to find the original path used to invoke the driver, to determine 378212904Sdim // the installed path. We do this manually, because we want to support that 379212904Sdim // path being a symlink. 380218893Sdim { 381235633Sdim SmallString<128> InstalledPath(argv[0]); 382212904Sdim 383218893Sdim // Do a PATH lookup, if there are no directory components. 384218893Sdim if (llvm::sys::path::filename(InstalledPath) == InstalledPath) { 385263509Sdim std::string Tmp = llvm::sys::FindProgramByName( 386218893Sdim llvm::sys::path::filename(InstalledPath.str())); 387218893Sdim if (!Tmp.empty()) 388263509Sdim InstalledPath = Tmp; 389218893Sdim } 390218893Sdim llvm::sys::fs::make_absolute(InstalledPath); 391218893Sdim InstalledPath = llvm::sys::path::parent_path(InstalledPath); 392218893Sdim bool exists; 393218893Sdim if (!llvm::sys::fs::exists(InstalledPath.str(), exists) && exists) 394218893Sdim TheDriver.setInstalledDir(InstalledPath); 395212904Sdim } 396212904Sdim 397221345Sdim llvm::InitializeAllTargets(); 398221345Sdim ParseProgName(argv, SavedStrings, TheDriver); 399199482Srdivacky 400205408Srdivacky // Handle CC_PRINT_OPTIONS and CC_PRINT_OPTIONS_FILE. 401205408Srdivacky TheDriver.CCPrintOptions = !!::getenv("CC_PRINT_OPTIONS"); 402205408Srdivacky if (TheDriver.CCPrintOptions) 403205408Srdivacky TheDriver.CCPrintOptionsFilename = ::getenv("CC_PRINT_OPTIONS_FILE"); 404205408Srdivacky 405218893Sdim // Handle CC_PRINT_HEADERS and CC_PRINT_HEADERS_FILE. 406218893Sdim TheDriver.CCPrintHeaders = !!::getenv("CC_PRINT_HEADERS"); 407218893Sdim if (TheDriver.CCPrintHeaders) 408218893Sdim TheDriver.CCPrintHeadersFilename = ::getenv("CC_PRINT_HEADERS_FILE"); 409218893Sdim 410221345Sdim // Handle CC_LOG_DIAGNOSTICS and CC_LOG_DIAGNOSTICS_FILE. 411221345Sdim TheDriver.CCLogDiagnostics = !!::getenv("CC_LOG_DIAGNOSTICS"); 412221345Sdim if (TheDriver.CCLogDiagnostics) 413221345Sdim TheDriver.CCLogDiagnosticsFilename = ::getenv("CC_LOG_DIAGNOSTICS_FILE"); 414221345Sdim 415235633Sdim OwningPtr<Compilation> C(TheDriver.BuildCompilation(argv)); 416193326Sed int Res = 0; 417252723Sdim SmallVector<std::pair<int, const Command *>, 4> FailingCommands; 418193326Sed if (C.get()) 419252723Sdim Res = TheDriver.ExecuteCompilation(*C, FailingCommands); 420226890Sdim 421245431Sdim // Force a crash to test the diagnostics. 422252723Sdim if (::getenv("FORCE_CLANG_DIAGNOSTICS_CRASH")) { 423252723Sdim Diags.Report(diag::err_drv_force_crash) << "FORCE_CLANG_DIAGNOSTICS_CRASH"; 424252723Sdim const Command *FailingCommand = 0; 425252723Sdim FailingCommands.push_back(std::make_pair(-1, FailingCommand)); 426252723Sdim } 427245431Sdim 428252723Sdim for (SmallVectorImpl< std::pair<int, const Command *> >::iterator it = 429252723Sdim FailingCommands.begin(), ie = FailingCommands.end(); it != ie; ++it) { 430252723Sdim int CommandRes = it->first; 431252723Sdim const Command *FailingCommand = it->second; 432252723Sdim if (!Res) 433252723Sdim Res = CommandRes; 434226890Sdim 435252723Sdim // If result status is < 0, then the driver command signalled an error. 436252723Sdim // If result status is 70, then the driver command reported a fatal error. 437252723Sdim // In these cases, generate additional diagnostic information if possible. 438252723Sdim if (CommandRes < 0 || CommandRes == 70) { 439252723Sdim TheDriver.generateCompilationDiagnostics(*C, FailingCommand); 440252723Sdim break; 441252723Sdim } 442252723Sdim } 443252723Sdim 444206084Srdivacky // If any timers were active but haven't been destroyed yet, print their 445206084Srdivacky // results now. This happens in -disable-free mode. 446206084Srdivacky llvm::TimerGroup::printAll(llvm::errs()); 447206084Srdivacky 448193326Sed llvm::llvm_shutdown(); 449193326Sed 450245431Sdim#ifdef _WIN32 451245431Sdim // Exit status should not be negative on Win32, unless abnormal termination. 452245431Sdim // Once abnormal termiation was caught, negative status should not be 453245431Sdim // propagated. 454245431Sdim if (Res < 0) 455245431Sdim Res = 1; 456245431Sdim#endif 457245431Sdim 458252723Sdim // If we have multiple failing commands, we return the result of the first 459252723Sdim // failing command. 460193326Sed return Res; 461193326Sed} 462