Remove Value::{isName, getNameRef}.

Also, change MDString to use a StringRef.

llvm-svn: 77098
diff --git a/llvm/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp b/llvm/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
index 146979e..69b67db 100644
--- a/llvm/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
+++ b/llvm/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
@@ -874,9 +874,9 @@
   // Check to see if this is a special global used by LLVM, if so, emit it.
   if (EmitSpecialLLVMGlobal(GVar)) {
     if (TM.getRelocationModel() == Reloc::Static) {
-      if (GVar->isName("llvm.global_ctors"))
+      if (GVar->getName() == "llvm.global_ctors")
         O << ".reference .constructors_used\n";
-      else if (GVar->isName("llvm.global_dtors"))
+      else if (GVar->getName() == "llvm.global_dtors")
         O << ".reference .destructors_used\n";
     }
     return;