[SystemZ][z/OS] Set text flag correctly for llvm-reduce tool

[abhina.sreeskantharajan]

Summary

This patch sets the text flag correctly for llvm-reduce files

[arsenm]

LGTM

[SeanP]

LGTM

llvm/tools/llvm-reduce/TestRunner.cpp

if (M.LTOInfo && M.LTOInfo->HasSummary) {
           buildModuleSummaryIndex(M, nullptr, &PSI));
     }
     WriteBitcodeToFile(M, OutStream, Index.get());
   }
 }
 
 void TestRunner::writeOutput(StringRef Message) {
   std::error_code EC;
-  raw_fd_ostream Out(OutputFilename, EC);
+  raw_fd_ostream Out(OutputFilename, EC,
+                     EmitBitcode && !Program->isMIR() ? sys::fs::OF_None
+                                                      : sys::fs::OF_Text);
   if (EC) {
     errs() << "Error opening output file: " << EC.message() << "!\n";
     exit(1);
   }
 
   // Requesting bitcode emission with mir is nonsense, so just ignore it.
   if (EmitBitcode && !Program->isMIR())
     writeBitcode(*Program, Out);
   else
     Program->print(Out, /*AnnotationWriter=*/nullptr);
 
   errs() << Message << OutputFilename << '\n';
 }

llvm/tools/llvm-reduce/deltas/Delta.cpp

bool isReduced(ReducerWorkItem &M, TestRunner &Test) {
   const bool UseBitcode = Test.inputIsBitcode() || TmpFilesAsBitcode;
 
   SmallString<128> CurrentFilepath;
 
   // Write ReducerWorkItem to tmp file
   int FD;
   std::error_code EC = sys::fs::createTemporaryFile(
       "llvm-reduce", M.isMIR() ? "mir" : (UseBitcode ? "bc" : "ll"), FD,
-      CurrentFilepath);
+      CurrentFilepath,
+      UseBitcode && !M.isMIR() ? sys::fs::OF_None : sys::fs::OF_Text);
   if (EC) {
     errs() << "Error making unique filename: " << EC.message() << "!\n";
     exit(1);
   }
 
   ToolOutputFile Out(CurrentFilepath, FD);
 
   if (TmpFilesAsBitcode)