Finish migrating VMCore to StringRef/Twine based APIs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77051 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Linker/LinkItems.cpp b/lib/Linker/LinkItems.cpp
index db86005..3c9a857 100644
--- a/lib/Linker/LinkItems.cpp
+++ b/lib/Linker/LinkItems.cpp
@@ -70,12 +70,12 @@
 
 /// LinkInLibrary - links one library into the HeadModule.
 ///
-bool Linker::LinkInLibrary(const std::string& Lib, bool& is_native) {
+bool Linker::LinkInLibrary(const StringRef &Lib, bool& is_native) {
   is_native = false;
   // Determine where this library lives.
   sys::Path Pathname = FindLib(Lib);
   if (Pathname.isEmpty())
-    return error("Cannot find library '" + Lib + "'");
+    return error("Cannot find library '" + Lib.str() + "'");
 
   // If its an archive, try to link it in
   std::string Magic;
@@ -83,7 +83,7 @@
   switch (sys::IdentifyFileType(Magic.c_str(), 64)) {
     default: llvm_unreachable("Bad file type identification");
     case sys::Unknown_FileType:
-      return warning("Supposed library '" + Lib + "' isn't a library.");
+      return warning("Supposed library '" + Lib.str() + "' isn't a library.");
 
     case sys::Bitcode_FileType:
       // LLVM ".so" file.