Remove meaningless const.

Pass StringRef by value.

llvm-svn: 84804

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/lib/VMCore/Metadata.cpp b/llvm/lib/VMCore/Metadata.cpp
index faf79fda9cd..8b37681b96b 100644
--- a/llvm/lib/VMCore/Metadata.cpp
+++ b/llvm/lib/VMCore/Metadata.cpp
@@ -26,7 +26,7 @@ using namespace llvm;
 //===----------------------------------------------------------------------===//
 // MDString implementation.
 //
-MDString *MDString::get(LLVMContext &Context, const StringRef &Str) {
+MDString *MDString::get(LLVMContext &Context, StringRef Str) {
   LLVMContextImpl *pImpl = Context.pImpl;
   StringMapEntry<MDString *> &Entry = 
     pImpl->MDStringCache.GetOrCreateValue(Str);
@@ -186,7 +186,7 @@ NamedMDNode::~NamedMDNode() {
 
 /// registerMDKind - Register a new metadata kind and return its ID.
 /// A metadata kind can be registered only once. 
-unsigned MetadataContext::registerMDKind(const StringRef Name) {
+unsigned MetadataContext::registerMDKind(StringRef Name) {
   assert(isValidName(Name) && "Invalid custome metadata name!");
   unsigned Count = MDHandlerNames.size();
   assert(MDHandlerNames.count(Name) == 0 && "Already registered MDKind!");
@@ -194,7 +194,7 @@ unsigned MetadataContext::registerMDKind(const StringRef Name) {
 }
 
 /// isValidName - Return true if Name is a valid custom metadata handler name.
-bool MetadataContext::isValidName(const StringRef MDName) {
+bool MetadataContext::isValidName(StringRef MDName) {
   if (MDName.empty())
     return false;
 
@@ -211,7 +211,7 @@ bool MetadataContext::isValidName(const StringRef MDName) {
 
 /// getMDKind - Return metadata kind. If the requested metadata kind
 /// is not registered then return 0.
-unsigned MetadataContext::getMDKind(const StringRef Name) const {
+unsigned MetadataContext::getMDKind(StringRef Name) const {
   StringMap<unsigned>::const_iterator I = MDHandlerNames.find(Name);
   if (I == MDHandlerNames.end()) {
     assert(isValidName(Name) && "Invalid custome metadata name!");