[upstream-update] Update for removal of clang::LangOptions::ImplementationOfModule.

It was unified with ModuleName. Now a flag is set to say if ModuleName is the
implementation module or not.

Author: gottesmm

lib/IDE/Utils.cpp

@@ -335,11 +335,12 @@ bool ide::initInvocationByClangArguments(ArrayRef<const char *> ArgList,
     CCArgs.push_back(Entry);
   }
 
-  if (!ClangInvok->getLangOpts()->ImplementationOfModule.empty()) {
+  if (!ClangInvok->getLangOpts()->CompilingModule) {
     CCArgs.push_back("-Xclang");
-    CCArgs.push_back("-fmodule-implementation-of");
-    CCArgs.push_back("-Xclang");
-    CCArgs.push_back(ClangInvok->getLangOpts()->ImplementationOfModule);
+    llvm::SmallString<64> Str;
+    Str += "-fmodule-name=";
+    Str += ClangInvok->getLangOpts()->CurrentModule;
+    CCArgs.push_back(Str.str());
   }
 
   if (PPOpts.DetailedRecord) {