[Driver] Use Twine instead of itostr. NFC.

No need to construct temporary std::strings here.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@249676 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 83b5869e094358712d84b82cfe4a91636925a006..0738f1384a50c43532e4ba708e677fcf6de55088 100644 (file)
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -2353,7 +2353,7 @@ static void RenderDebugEnablingArgs(const ArgList &Args, ArgStringList &CmdArgs,
   }
   if (DwarfVersion > 0)
     CmdArgs.push_back(
-        Args.MakeArgString("-dwarf-version=" + llvm::itostr(DwarfVersion)));
+        Args.MakeArgString("-dwarf-version=" + Twine(DwarfVersion)));
 }
 
 static void CollectArgsForIntegratedAssembler(Compilation &C,