PR22299: Relocate code for handling -fmodule-map-file= so that we don't try to

produce diagnostics with source locations before the diagnostics system is
ready for them.

llvm-svn: 226882

clang/lib/Frontend/CompilerInstance.cpp

@@ -371,14 +371,6 @@ void CompilerInstance::createPreprocessor(TranslationUnitKind TUKind) {
     AttachHeaderIncludeGen(*PP, /*ShowAllHeaders=*/false, /*OutputPath=*/"",
                            /*ShowDepth=*/true, /*MSStyle=*/true);
   }
-
-  // Load all explictly-specified module map files.
-  for (const auto &Filename : getFrontendOpts().ModuleMapFiles) {
-    if (auto *File = getFileManager().getFile(Filename))
-      PP->getHeaderSearchInfo().loadModuleMapFile(File, /*IsSystem*/false);
-    else
-      getDiagnostics().Report(diag::err_module_map_not_found) << Filename;
-  }
 }
 
 // ASTContext