[llvm] r196301 - Avoid buffer copies when a Twine already is a StringRef.

[David Blaikie]

Author: dblaikie
Date: Tue Dec  3 12:18:28 2013
New Revision: 196301

URL: http://llvm.org/viewvc/llvm-project?rev=196301&view=rev
Log:
Avoid buffer copies when a Twine already is a StringRef.

Modified:
    llvm/trunk/lib/MC/MCContext.cpp
    llvm/trunk/lib/Option/ArgList.cpp

Modified: llvm/trunk/lib/MC/MCContext.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/MCContext.cpp?rev=196301&r1=196300&r2=196301&view=diff
==============================================================================
--- llvm/trunk/lib/MC/MCContext.cpp (original)
+++ llvm/trunk/lib/MC/MCContext.cpp Tue Dec  3 12:18:28 2013
@@ -157,8 +157,7 @@ MCSymbol *MCContext::CreateSymbol(String
 
 MCSymbol *MCContext::GetOrCreateSymbol(const Twine &Name) {
   SmallString<128> NameSV;
-  Name.toVector(NameSV);
-  return GetOrCreateSymbol(NameSV.str());
+  return GetOrCreateSymbol(Name.toStringRef(NameSV));
 }
 
 MCSymbol *MCContext::CreateTempSymbol() {

Modified: llvm/trunk/lib/Option/ArgList.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Option/ArgList.cpp?rev=196301&r1=196300&r2=196301&view=diff
==============================================================================
--- llvm/trunk/lib/Option/ArgList.cpp (original)
+++ llvm/trunk/lib/Option/ArgList.cpp Tue Dec  3 12:18:28 2013
@@ -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,