From 8e5283ad1d9fd8ad029d524c1c70df5e8d0b9eb3 Mon Sep 17 00:00:00 2001
From: David Blaikie <dblaikie@gmail.com>
Date: Tue, 3 Dec 2013 18:18:28 +0000
Subject: [PATCH] Avoid buffer copies when a Twine already is a StringRef.

llvm-svn: 196301
---
 llvm/lib/MC/MCContext.cpp   | 3 +--
 llvm/lib/Option/ArgList.cpp | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/llvm/lib/MC/MCContext.cpp b/llvm/lib/MC/MCContext.cpp
index 3b45d1670d2c..7e4cdf98eef7 100644
--- a/llvm/lib/MC/MCContext.cpp
+++ b/llvm/lib/MC/MCContext.cpp
@@ -157,8 +157,7 @@ MCSymbol *MCContext::CreateSymbol(StringRef Name) {
 
 MCSymbol *MCContext::GetOrCreateSymbol(const Twine &Name) {
   SmallString<128> NameSV;
-  Name.toVector(NameSV);
-  return GetOrCreateSymbol(NameSV.str());
+  return GetOrCreateSymbol(Name.toStringRef(NameSV));
 }
 
 MCSymbol *MCContext::CreateTempSymbol() {
diff --git a/llvm/lib/Option/ArgList.cpp b/llvm/lib/Option/ArgList.cpp
index 15f7e8bf4b82..fecd23717359 100644
--- a/llvm/lib/Option/ArgList.cpp
+++ b/llvm/lib/Option/ArgList.cpp
@@ -291,8 +291,7 @@ void ArgList::ClaimAllArgs() const {
 
 const char *ArgList::MakeArgString(const Twine &T) const {
   SmallString<256> Str;
-  T.toVector(Str);
-  return MakeArgString(Str.str());
+  return MakeArgString(T.toStringRef(Str));
 }
 
 const char *ArgList::GetOrMakeJoinedArgString(unsigned Index,