Revert r144703. It was a dumb idea anyway; will add the new bits more
incrementally with a new frontend action.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144723 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CompilerInstance.cpp b/lib/Frontend/CompilerInstance.cpp
index 0a32cb9..ea2c3bd 100644
--- a/lib/Frontend/CompilerInstance.cpp
+++ b/lib/Frontend/CompilerInstance.cpp
@@ -647,14 +647,13 @@
     llvm::EnableStatistics();
 
   for (unsigned i = 0, e = getFrontendOpts().Inputs.size(); i != e; ++i) {
-    InputKind InKind = getFrontendOpts().Inputs[i].first;
-    std::string InFile = getFrontendOpts().Inputs[i].second;
-    
+    const std::string &InFile = getFrontendOpts().Inputs[i].second;
+
     // Reset the ID tables if we are reusing the SourceManager.
     if (hasSourceManager())
       getSourceManager().clearIDTables();
 
-    if (Act.BeginSourceFile(*this, InFile, InKind)) {
+    if (Act.BeginSourceFile(*this, InFile, getFrontendOpts().Inputs[i].first)) {
       Act.Execute();
       Act.EndSourceFile();
     }
@@ -699,7 +698,7 @@
 namespace {
   struct CompileModuleData {
     CompilerInstance &Instance;
-    GenerateModuleAction &CreateModuleAction;
+    GeneratePCHAction &CreateModuleAction;
   };
 }
 
@@ -1024,7 +1023,7 @@
                              /*ShouldCloneClient=*/true);
 
   // Construct a module-generating action.
-  GenerateModuleAction CreateModuleAction;
+  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.
diff --git a/lib/Frontend/FrontendActions.cpp b/lib/Frontend/FrontendActions.cpp
index 2fcbc67..6f84da9 100644
--- a/lib/Frontend/FrontendActions.cpp
+++ b/lib/Frontend/FrontendActions.cpp
@@ -85,7 +85,7 @@
 
   if (!CI.getFrontendOpts().RelocatablePCH)
     Sysroot.clear();
-  return new PCHGenerator(CI.getPreprocessor(), OutputFile, /*Module=*/false, 
+  return new PCHGenerator(CI.getPreprocessor(), OutputFile, MakeModule, 
                           Sysroot, OS);
 }
 
@@ -113,44 +113,6 @@
   return false;
 }
 
-ASTConsumer *GenerateModuleAction::CreateASTConsumer(CompilerInstance &CI,
-                                                     StringRef InFile) {
-  std::string Sysroot;
-  std::string OutputFile;
-  raw_ostream *OS = 0;
-  if (ComputeASTConsumerArguments(CI, InFile, Sysroot, OutputFile, OS))
-    return 0;
-  
-  if (!CI.getFrontendOpts().RelocatablePCH)
-    Sysroot.clear();
-  return new PCHGenerator(CI.getPreprocessor(), OutputFile, /*Module=*/true, 
-                          Sysroot, OS);
-}
-
-bool GenerateModuleAction::ComputeASTConsumerArguments(CompilerInstance &CI,
-                                                       StringRef InFile,
-                                                       std::string &Sysroot,
-                                                       std::string &OutputFile,
-                                                       raw_ostream *&OS) {
-  Sysroot = CI.getHeaderSearchOpts().Sysroot;
-  if (CI.getFrontendOpts().RelocatablePCH && Sysroot.empty()) {
-    CI.getDiagnostics().Report(diag::err_relocatable_without_isysroot);
-    return true;
-  }
-  
-  // We use createOutputFile here because this is exposed via libclang, and we
-  // must disable the RemoveFileOnSignal behavior.
-  // We use a temporary to avoid race conditions.
-  OS = CI.createOutputFile(CI.getFrontendOpts().OutputFile, /*Binary=*/true,
-                           /*RemoveFileOnSignal=*/false, InFile,
-                           /*Extension=*/"", /*useTemporary=*/true);
-  if (!OS)
-    return true;
-  
-  OutputFile = CI.getFrontendOpts().OutputFile;
-  return false;
-}
-
 ASTConsumer *SyntaxOnlyAction::CreateASTConsumer(CompilerInstance &CI,
                                                  StringRef InFile) {
   return new ASTConsumer();