[clang] Tidy uses of raw_string_ostream (NFC)

As specified in the docs,
1) raw_string_ostream is always unbuffered and
2) the underlying buffer may be used directly

( 65b13610a5226b84889b923bae884ba395ad084d for further reference )

* Don't call raw_string_ostream::flush(), which is essentially a no-op.
* Avoid unneeded calls to raw_string_ostream::str(), to avoid excess indirection.

1 files changed, 1 insertions, 3 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 32628c5..de6776b 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -817,7 +817,6 @@ static bool RoundTrip(ParseFn Parse, GenerateFn Generate,
       llvm::sys::printArg(OS, Arg, /*Quote=*/true);
       OS << ' ';
     }
-    OS.flush();
     return Buffer;
   };
 
@@ -1186,7 +1185,6 @@ static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
       os << " ";
     os << Args.getArgString(i);
   }
-  os.flush();
 
   return Diags.getNumErrors() == NumErrorsBefore;
 }
@@ -3735,7 +3733,7 @@ void CompilerInvocationBase::GenerateLangArgs(const LangOptions &Opts,
     llvm::interleave(
         Opts.OMPTargetTriples, OS,
         [&OS](const llvm::Triple &T) { OS << T.str(); }, ",");
-    GenerateArg(Consumer, OPT_fopenmp_targets_EQ, OS.str());
+    GenerateArg(Consumer, OPT_fopenmp_targets_EQ, Targets);
   }
 
   if (!Opts.OMPHostIRFile.empty())