[SystemZ][z/OS] Continue marking text files with OF_Text (#95111)

Text files should be opened with OF_Text to have the correct encoding.

Author: abhina-sree

llvm/lib/Analysis/ModuleSummaryAnalysis.cpp

@@ -1075,7 +1075,7 @@ ModuleSummaryIndex llvm::buildModuleSummaryIndex(
 
   if (!ModuleSummaryDotFile.empty()) {
     std::error_code EC;
-    raw_fd_ostream OSDot(ModuleSummaryDotFile, EC, sys::fs::OpenFlags::OF_None);
+    raw_fd_ostream OSDot(ModuleSummaryDotFile, EC, sys::fs::OpenFlags::OF_Text);
     if (EC)
       report_fatal_error(Twine("Failed to open dot file ") +
                          ModuleSummaryDotFile + ": " + EC.message() + "\n");

llvm/lib/LTO/LTOBackend.cpp

@@ -143,7 +143,7 @@ Error Config::addSaveTemps(std::string OutputFileName, bool UseInputModulePath,
         writeIndexToFile(Index, OS);
 
         Path = OutputFileName + "index.dot";
-        raw_fd_ostream OSDot(Path, EC, sys::fs::OpenFlags::OF_None);
+        raw_fd_ostream OSDot(Path, EC, sys::fs::OpenFlags::OF_Text);
         if (EC)
           reportOpenError(Path, EC.message());
         Index.exportToDot(OSDot, GUIDPreservedSymbols);

llvm/lib/Passes/StandardInstrumentations.cpp

@@ -838,7 +838,7 @@ static int prepareDumpIRFileDescriptor(const StringRef DumpIRFilename) {
   }
   int Result = 0;
   EC = sys::fs::openFile(DumpIRFilename, Result, sys::fs::CD_OpenAlways,
-                         sys::fs::FA_Write, sys::fs::OF_None);
+                         sys::fs::FA_Write, sys::fs::OF_Text);
   if (EC)
     report_fatal_error(Twine("Failed to open ") + DumpIRFilename +
                        " to support -ir-dump-directory: " + EC.message());

llvm/lib/Transforms/IPO/FunctionImport.cpp

@@ -1355,7 +1355,7 @@ std::error_code llvm::EmitImportsFiles(
     StringRef ModulePath, StringRef OutputFilename,
     const std::map<std::string, GVSummaryMapTy> &ModuleToSummariesForIndex) {
   std::error_code EC;
-  raw_fd_ostream ImportsOS(OutputFilename, EC, sys::fs::OpenFlags::OF_None);
+  raw_fd_ostream ImportsOS(OutputFilename, EC, sys::fs::OpenFlags::OF_Text);
   if (EC)
     return EC;
   for (const auto &ILI : ModuleToSummariesForIndex)