Remove the Chaining argument from the PCH/module generator. It's no longer used

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138596 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/ASTUnit.cpp b/lib/Frontend/ASTUnit.cpp
index b8d9f2f..e3d5636 100644
--- a/lib/Frontend/ASTUnit.cpp
+++ b/lib/Frontend/ASTUnit.cpp
@@ -771,10 +771,9 @@
   std::vector<Decl *> TopLevelDecls;
                                      
 public:
-  PrecompilePreambleConsumer(ASTUnit &Unit,
-                             const Preprocessor &PP, bool Chaining,
+  PrecompilePreambleConsumer(ASTUnit &Unit, const Preprocessor &PP, 
                              StringRef isysroot, raw_ostream *Out)
-    : PCHGenerator(PP, "", Chaining, isysroot, Out), Unit(Unit),
+    : PCHGenerator(PP, "", isysroot, Out), Unit(Unit),
       Hash(Unit.getCurrentTopLevelHashValue()) {
     Hash = 0;
   }
@@ -827,10 +826,9 @@
     std::string Sysroot;
     std::string OutputFile;
     raw_ostream *OS = 0;
-    bool Chaining;
     if (GeneratePCHAction::ComputeASTConsumerArguments(CI, InFile, Sysroot,
                                                        OutputFile,
-                                                       OS, Chaining))
+                                                       OS))
       return 0;
     
     if (!CI.getFrontendOpts().RelocatablePCH)
@@ -838,8 +836,8 @@
 
     CI.getPreprocessor().addPPCallbacks(
      new MacroDefinitionTrackerPPCallbacks(Unit.getCurrentTopLevelHashValue()));
-    return new PrecompilePreambleConsumer(Unit, CI.getPreprocessor(), Chaining,
-                                          Sysroot, OS);
+    return new PrecompilePreambleConsumer(Unit, CI.getPreprocessor(), Sysroot, 
+                                          OS);
   }
 
   virtual bool hasCodeCompletionSupport() const { return false; }
diff --git a/lib/Frontend/FrontendActions.cpp b/lib/Frontend/FrontendActions.cpp
index 5e2b9c4..e05d576 100644
--- a/lib/Frontend/FrontendActions.cpp
+++ b/lib/Frontend/FrontendActions.cpp
@@ -78,23 +78,19 @@
   std::string Sysroot;
   std::string OutputFile;
   raw_ostream *OS = 0;
-  bool Chaining;
-  if (ComputeASTConsumerArguments(CI, InFile, Sysroot, OutputFile, OS, 
-                                  Chaining))
+  if (ComputeASTConsumerArguments(CI, InFile, Sysroot, OutputFile, OS))
     return 0;
 
   if (!CI.getFrontendOpts().RelocatablePCH)
     Sysroot.clear();
-  return new PCHGenerator(CI.getPreprocessor(), OutputFile, Chaining, Sysroot, 
-                          OS);
+  return new PCHGenerator(CI.getPreprocessor(), OutputFile, Sysroot, OS);
 }
 
 bool GeneratePCHAction::ComputeASTConsumerArguments(CompilerInstance &CI,
                                                     StringRef InFile,
                                                     std::string &Sysroot,
                                                     std::string &OutputFile,
-                                                    raw_ostream *&OS,
-                                                    bool &Chaining) {
+                                                    raw_ostream *&OS) {
   Sysroot = CI.getHeaderSearchOpts().Sysroot;
   if (CI.getFrontendOpts().RelocatablePCH && Sysroot.empty()) {
     CI.getDiagnostics().Report(diag::err_relocatable_without_isysroot);
@@ -111,8 +107,6 @@
     return true;
 
   OutputFile = CI.getFrontendOpts().OutputFile;
-  Chaining = CI.getInvocation().getFrontendOpts().ChainedPCH &&
-             !CI.getPreprocessorOpts().ImplicitPCHInclude.empty();
   return false;
 }