Whitespace

llvm-svn: 141486
diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index 408ebbe..c413a42 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -79,7 +79,7 @@
   FileMgr = Value;
 }
 
-void CompilerInstance::setSourceManager(SourceManager *Value) { 
+void CompilerInstance::setSourceManager(SourceManager *Value) {
   SourceMgr = Value;
 }
 
@@ -162,7 +162,7 @@
                                   &getCodeGenOpts());
 }
 
-llvm::IntrusiveRefCntPtr<DiagnosticsEngine> 
+llvm::IntrusiveRefCntPtr<DiagnosticsEngine>
 CompilerInstance::createDiagnostics(const DiagnosticOptions &Opts,
                                     int Argc, const char* const *Argv,
                                     DiagnosticConsumer *Client,
@@ -184,13 +184,13 @@
     Diags->setClient(new TextDiagnosticPrinter(llvm::errs(), Opts));
 
   // Chain in -verify checker, if requested.
-  if (Opts.VerifyDiagnostics) 
+  if (Opts.VerifyDiagnostics)
     Diags->setClient(new VerifyDiagnosticConsumer(*Diags));
 
   // Chain in -diagnostic-log-file dumper, if requested.
   if (!Opts.DiagnosticLogFile.empty())
     SetUpDiagnosticLog(Opts, CodeGenOpts, *Diags);
-  
+
   if (!Opts.DumpBuildInformation.empty())
     SetUpBuildDumpLog(Opts, Argc, Argv, *Diags);
 
@@ -216,18 +216,18 @@
 
 void CompilerInstance::createPreprocessor() {
   const PreprocessorOptions &PPOpts = getPreprocessorOpts();
-  
+
   // Create a PTH manager if we are using some form of a token cache.
   PTHManager *PTHMgr = 0;
   if (!PPOpts.TokenCache.empty())
     PTHMgr = PTHManager::Create(PPOpts.TokenCache, getDiagnostics());
-  
+
   // Create the Preprocessor.
   HeaderSearch *HeaderInfo = new HeaderSearch(getFileManager());
   PP = new Preprocessor(getDiagnostics(), getLangOpts(), &getTarget(),
                         getSourceManager(), *HeaderInfo, *this, PTHMgr,
                         /*OwnsHeaderSearch=*/true);
-  
+
   // Note that this is different then passing PTHMgr to Preprocessor's ctor.
   // That argument is used as the IdentifierInfoLookup argument to
   // IdentifierTable's ctor.
@@ -235,30 +235,30 @@
     PTHMgr->setPreprocessor(&*PP);
     PP->setPTHManager(PTHMgr);
   }
-  
+
   if (PPOpts.DetailedRecord)
     PP->createPreprocessingRecord(
                                   PPOpts.DetailedRecordIncludesNestedMacroExpansions);
-  
+
   InitializePreprocessor(*PP, PPOpts, getHeaderSearchOpts(), getFrontendOpts());
-  
+
   // Set up the module path, including the hash for the
   // module-creation options.
   llvm::SmallString<256> SpecificModuleCache(
                            getHeaderSearchOpts().ModuleCachePath);
   if (!getHeaderSearchOpts().DisableModuleHash)
-    llvm::sys::path::append(SpecificModuleCache, 
+    llvm::sys::path::append(SpecificModuleCache,
                             getInvocation().getModuleHash());
   PP->getHeaderSearchInfo().configureModules(SpecificModuleCache,
     getPreprocessorOpts().ModuleBuildPath.empty()
-      ? std::string() 
+      ? std::string()
       : getPreprocessorOpts().ModuleBuildPath.back());
-  
+
   // Handle generating dependencies, if requested.
   const DependencyOutputOptions &DepOpts = getDependencyOutputOpts();
   if (!DepOpts.OutputFile.empty())
     AttachDependencyFileGen(*PP, DepOpts);
-  
+
   // Handle generating header include information, if requested.
   if (DepOpts.ShowHeaderIncludes)
     AttachHeaderIncludeGen(*PP);
@@ -290,7 +290,7 @@
   llvm::OwningPtr<ExternalASTSource> Source;
   bool Preamble = getPreprocessorOpts().PrecompiledPreambleBytes.first != 0;
   Source.reset(createPCHExternalASTSource(Path, getHeaderSearchOpts().Sysroot,
-                                          DisablePCHValidation, 
+                                          DisablePCHValidation,
                                           DisableStatCache,
                                           getPreprocessor(), getASTContext(),
                                           DeserializationListener,
@@ -315,8 +315,8 @@
 
   Reader->setDeserializationListener(
             static_cast<ASTDeserializationListener *>(DeserializationListener));
-  switch (Reader->ReadAST(Path, 
-                          Preamble ? serialization::MK_Preamble 
+  switch (Reader->ReadAST(Path,
+                          Preamble ? serialization::MK_Preamble
                                    : serialization::MK_PCH)) {
   case ASTReader::Success:
     // Set the predefines buffer as suggested by the PCH reader. Typically, the
@@ -338,7 +338,7 @@
 
 // Code Completion
 
-static bool EnableCodeCompletion(Preprocessor &PP, 
+static bool EnableCodeCompletion(Preprocessor &PP,
                                  const std::string &Filename,
                                  unsigned Line,
                                  unsigned Column) {
@@ -398,7 +398,7 @@
     return 0;
 
   // Set up the creation routine for code-completion.
-  return new PrintingCodeCompleteConsumer(ShowMacros, ShowCodePatterns, 
+  return new PrintingCodeCompleteConsumer(ShowMacros, ShowCodePatterns,
                                           ShowGlobals, OS);
 }
 
@@ -440,7 +440,7 @@
       }
     } else if (!it->Filename.empty() && EraseFiles)
       llvm::sys::Path(it->Filename).eraseFromDisk();
-      
+
   }
   OutputFiles.clear();
 }
@@ -619,7 +619,7 @@
 
   if (getFrontendOpts().ShowStats)
     llvm::EnableStatistics();
-    
+
   for (unsigned i = 0, e = getFrontendOpts().Inputs.size(); i != e; ++i) {
     const std::string &InFile = getFrontendOpts().Inputs[i].second;
 
@@ -638,7 +638,7 @@
     // Get the total number of warnings/errors from the client.
     unsigned NumWarnings = getDiagnostics().getClient()->getNumWarnings();
     unsigned NumErrors = getDiagnostics().getClient()->getNumErrors();
-    
+
     if (NumWarnings)
       OS << NumWarnings << " warning" << (NumWarnings == 1 ? "" : "s");
     if (NumWarnings && NumErrors)
@@ -687,7 +687,7 @@
   /// \brief Class that manages the creation of a lock file to aid
   /// implicit coordination between different processes.
   ///
-  /// The implicit coordination works by creating a ".lock" file alongside 
+  /// The implicit coordination works by creating a ".lock" file alongside
   /// the file that we're coordinating for, using the atomicity of the file
   /// system to ensure that only a single process can create that ".lock" file.
   /// When the lock file is removed, the owning process has finished the
@@ -710,28 +710,28 @@
   private:
     llvm::SmallString<128> LockFileName;
     llvm::SmallString<128> UniqueLockFileName;
-    
+
     llvm::Optional<std::pair<std::string, int> > Owner;
     llvm::Optional<llvm::error_code> Error;
-    
+
     LockFileManager(const LockFileManager &);
     LockFileManager &operator=(const LockFileManager &);
-    
-    static llvm::Optional<std::pair<std::string, int> > 
+
+    static llvm::Optional<std::pair<std::string, int> >
     readLockFile(StringRef LockFileName);
-    
+
     static bool processStillExecuting(StringRef Hostname, int PID);
-    
+
   public:
-    
+
     LockFileManager(StringRef FileName);
     ~LockFileManager();
 
     /// \brief Determine the state of the lock file.
     LockFileState getState() const;
-    
+
     operator LockFileState() const { return getState(); }
-    
+
     /// \brief For a shared lock, wait until the owner releases the lock.
     void waitForUnlock();
   };
@@ -742,14 +742,14 @@
 /// \param LockFileName The name of the lock file to read.
 ///
 /// \returns The process ID of the process that owns this lock file
-llvm::Optional<std::pair<std::string, int> > 
+llvm::Optional<std::pair<std::string, int> >
 LockFileManager::readLockFile(StringRef LockFileName) {
   // Check whether the lock file exists. If not, clearly there's nothing
   // to read, so we just return.
   bool Exists = false;
   if (llvm::sys::fs::exists(LockFileName, Exists) || !Exists)
     return llvm::Optional<std::pair<std::string, int> >();
-  
+
   // Read the owning host and PID out of the lock file. If it appears that the
   // owning process is dead, the lock file is invalid.
   int PID = 0;
@@ -770,42 +770,42 @@
   char MyHostname[256];
   MyHostname[255] = 0;
   MyHostname[0] = 0;
-  gethostname(MyHostname, 255);    
+  gethostname(MyHostname, 255);
   // Check whether the process is dead. If so, we're done.
   if (MyHostname == Hostname && getsid(PID) == -1 && errno == ESRCH)
     return false;
 #endif
-  
+
   return true;
 }
 
-LockFileManager::LockFileManager(StringRef FileName) 
+LockFileManager::LockFileManager(StringRef FileName)
 {
   LockFileName = FileName;
   LockFileName += ".lock";
-  
+
   // If the lock file already exists, don't bother to try to create our own
   // lock file; it won't work anyway. Just figure out who owns this lock file.
   if ((Owner = readLockFile(LockFileName)))
     return;
-      
+
   // Create a lock file that is unique to this instance.
   UniqueLockFileName = LockFileName;
   UniqueLockFileName += "-%%%%%%%%";
   int UniqueLockFileID;
-  if (llvm::error_code EC 
-        = llvm::sys::fs::unique_file(UniqueLockFileName.str(), 
+  if (llvm::error_code EC
+        = llvm::sys::fs::unique_file(UniqueLockFileName.str(),
                                      UniqueLockFileID,
-                                     UniqueLockFileName, 
+                                     UniqueLockFileName,
                                      /*makeAbsolute=*/false)) {
     Error = EC;
     return;
   }
-  
+
   // Write our process ID to our unique lock file.
   {
     llvm::raw_fd_ostream Out(UniqueLockFileID, /*shouldClose=*/true);
-    
+
 #if LLVM_ON_UNIX
     // FIXME: move getpid() call into LLVM
     char hostname[256];
@@ -817,7 +817,7 @@
     Out << "localhost 1";
 #endif
     Out.close();
-    
+
     if (Out.has_error()) {
       // We failed to write out PID, so make up an excuse, remove the
       // unique lock file, and fail.
@@ -827,16 +827,16 @@
       return;
     }
   }
-  
+
   // Create a hard link from the lock file name. If this succeeds, we're done.
-  llvm::error_code EC 
-    = llvm::sys::fs::create_hard_link(UniqueLockFileName.str(), 
+  llvm::error_code EC
+    = llvm::sys::fs::create_hard_link(UniqueLockFileName.str(),
                                       LockFileName.str());
   if (EC == llvm::errc::success)
     return;
 
-  // Creating the hard link failed. 
-          
+  // Creating the hard link failed.
+
 #ifdef LLVM_ON_UNIX
   // The creation of the hard link may appear to fail, but if stat'ing the
   // unique file returns a link count of 2, then we can still declare success.
@@ -847,12 +847,12 @@
 #endif
 
   // Someone else managed to create the lock file first. Wipe out our unique
-  // lock file (it's useless now) and read the process ID from the lock file. 
+  // lock file (it's useless now) and read the process ID from the lock file.
   bool Existed;
   llvm::sys::fs::remove(UniqueLockFileName.str(), Existed);
   if ((Owner = readLockFile(LockFileName)))
     return;
-  
+
   // There is a lock file that nobody owns; try to clean it up and report
   // an error.
   llvm::sys::fs::remove(LockFileName.str(), Existed);
@@ -865,14 +865,14 @@
 
   if (Error)
     return LFS_Error;
-  
+
   return LFS_Owned;
 }
 
 LockFileManager::~LockFileManager() {
   if (getState() != LFS_Owned)
     return;
-  
+
   // Since we own the lock, remove the lock file and our own unique lock file.
   bool Existed;
   llvm::sys::fs::remove(LockFileName.str(), Existed);
@@ -882,7 +882,7 @@
 void LockFileManager::waitForUnlock() {
   if (getState() != LFS_Shared)
     return;
-  
+
 #if LLVM_ON_WIN32
   unsigned long Interval = 1;
 #else
@@ -894,7 +894,7 @@
   const unsigned MaxSeconds = 3600;
   do {
     // Sleep for the designated interval, to allow the owning process time to
-    // finish up and 
+    // finish up and
     // FIXME: Should we hook in to system APIs to get a notification when the
     // lock file is deleted?
 #if LLVM_ON_WIN32
@@ -909,7 +909,7 @@
 
     if (!processStillExecuting((*Owner).first, (*Owner).second))
       return;
-        
+
     // Exponentially increase the time we wait for the lock to be removed.
 #if LLVM_ON_WIN32
     Interval *= 2;
@@ -928,7 +928,7 @@
            Interval.tv_sec < MaxSeconds
 #endif
            );
-  
+
   // Give up.
 }
 
@@ -943,31 +943,31 @@
   switch (Locked) {
   case LockFileManager::LFS_Error:
     return;
-      
+
   case LockFileManager::LFS_Owned:
     // We're responsible for building the module ourselves. Do so below.
     break;
-      
+
   case LockFileManager::LFS_Shared:
     // Someone else is responsible for building the module. Wait for them to
     // finish.
     Locked.waitForUnlock();
     break;
   }
-  
+
   // Construct a compiler invocation for creating this module.
   llvm::IntrusiveRefCntPtr<CompilerInvocation> Invocation
     (new CompilerInvocation(ImportingInstance.getInvocation()));
-  
+
   // For any options that aren't intended to affect how a module is built,
   // reset them to their default values.
   Invocation->getLangOpts().resetNonModularOptions();
   Invocation->getPreprocessorOpts().resetNonModularOptions();
-  
-  // Note that this module is part of the module build path, so that we 
+
+  // Note that this module is part of the module build path, so that we
   // can detect cycles in the module graph.
   Invocation->getPreprocessorOpts().ModuleBuildPath.push_back(ModuleName);
-  
+
   // Set up the inputs/outputs so that we build the module from its umbrella
   // header.
   FrontendOptions &FrontendOpts = Invocation->getFrontendOpts();
@@ -975,38 +975,38 @@
   FrontendOpts.DisableFree = false;
   FrontendOpts.Inputs.clear();
   FrontendOpts.Inputs.push_back(
-    std::make_pair(getSourceInputKindFromOptions(Invocation->getLangOpts()), 
+    std::make_pair(getSourceInputKindFromOptions(Invocation->getLangOpts()),
                                                  UmbrellaHeader));
-  
+
   Invocation->getDiagnosticOpts().VerifyDiagnostics = 0;
-  
-  
+
+
   assert(ImportingInstance.getInvocation().getModuleHash() ==
            Invocation->getModuleHash() && "Module hash mismatch!");
-  
+
   // Construct a compiler instance that will be used to actually create the
   // module.
   CompilerInstance Instance;
   Instance.setInvocation(&*Invocation);
-  Instance.createDiagnostics(/*argc=*/0, /*argv=*/0, 
+  Instance.createDiagnostics(/*argc=*/0, /*argv=*/0,
                              &ImportingInstance.getDiagnosticClient(),
                              /*ShouldOwnClient=*/true,
                              /*ShouldCloneClient=*/true);
 
   // Construct a module-generating action.
   GeneratePCHAction CreateModuleAction(true);
-  
+
   // Execute the action to actually build the module in-place. Use a separate
   // thread so that we get a stack large enough.
   const unsigned ThreadStackSize = 8 << 20;
   llvm::CrashRecoveryContext CRC;
   CompileModuleData Data = { Instance, CreateModuleAction };
   CRC.RunSafelyOnThread(&doCompileModule, &Data, ThreadStackSize);
-} 
+}
 
-ModuleKey CompilerInstance::loadModule(SourceLocation ImportLoc, 
+ModuleKey CompilerInstance::loadModule(SourceLocation ImportLoc,
                                        IdentifierInfo &ModuleName,
-                                       SourceLocation ModuleNameLoc) {  
+                                       SourceLocation ModuleNameLoc) {
   // Determine what file we're searching from.
   SourceManager &SourceMgr = getSourceManager();
   SourceLocation ExpandedImportLoc = SourceMgr.getExpansionLoc(ImportLoc);
@@ -1022,17 +1022,17 @@
     = PP->getHeaderSearchInfo().lookupModule(ModuleName.getName(),
                                              &ModuleFileName,
                                              &UmbrellaHeader);
-  
+
   bool BuildingModule = false;
   if (!ModuleFile && !UmbrellaHeader.empty()) {
     // We didn't find the module, but there is an umbrella header that
     // can be used to create the module file. Create a separate compilation
     // module to do so.
-    
+
     // Check whether there is a cycle in the module graph.
     SmallVectorImpl<std::string> &ModuleBuildPath
       = getPreprocessorOpts().ModuleBuildPath;
-    SmallVectorImpl<std::string>::iterator Pos 
+    SmallVectorImpl<std::string>::iterator Pos
       = std::find(ModuleBuildPath.begin(), ModuleBuildPath.end(),
                   ModuleName.getName());
     if (Pos != ModuleBuildPath.end()) {
@@ -1042,28 +1042,28 @@
         CyclePath += " -> ";
       }
       CyclePath += ModuleName.getName();
-      
+
       getDiagnostics().Report(ModuleNameLoc, diag::err_module_cycle)
         << ModuleName.getName() << CyclePath;
       return 0;
     }
-    
+
     getDiagnostics().Report(ModuleNameLoc, diag::warn_module_build)
       << ModuleName.getName();
     BuildingModule = true;
     compileModule(*this, ModuleName.getName(), ModuleFileName, UmbrellaHeader);
     ModuleFile = PP->getHeaderSearchInfo().lookupModule(ModuleName.getName());
   }
-  
+
   if (!ModuleFile) {
-    getDiagnostics().Report(ModuleNameLoc, 
+    getDiagnostics().Report(ModuleNameLoc,
                             BuildingModule? diag::err_module_not_built
                                           : diag::err_module_not_found)
       << ModuleName.getName()
       << SourceRange(ImportLoc, ModuleNameLoc);
     return 0;
   }
-  
+
   // If we don't already have an ASTReader, create one now.
   if (!ModuleManager) {
     if (!hasASTContext())
@@ -1073,7 +1073,7 @@
     const PreprocessorOptions &PPOpts = getPreprocessorOpts();
     ModuleManager = new ASTReader(getPreprocessor(), *Context,
                                   Sysroot.empty() ? "" : Sysroot.c_str(),
-                                  PPOpts.DisablePCHValidation, 
+                                  PPOpts.DisablePCHValidation,
                                   PPOpts.DisableStatCache);
     if (hasASTConsumer()) {
       ModuleManager->setDeserializationListener(
@@ -1089,7 +1089,7 @@
     if (hasASTConsumer())
       ModuleManager->StartTranslationUnit(&getASTConsumer());
   }
-  
+
   // Try to load the module we found.
   switch (ModuleManager->ReadAST(ModuleFile->getName(),
                                  serialization::MK_Module)) {
@@ -1100,12 +1100,12 @@
     // FIXME: The ASTReader will already have complained, but can we showhorn
     // that diagnostic information into a more useful form?
     return 0;
-      
+
   case ASTReader::Failure:
     // Already complained.
     return 0;
   }
-  
+
   // FIXME: The module file's FileEntry makes a poor key indeed!
   return (ModuleKey)ModuleFile;
 }