Add raw_ostream operators to NamedDecl for convenience. Switch over all users of getNameAsString on a stream.

The next step is to print the name directly into the stream, avoiding a temporary std::string copy.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101632 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Checker/ObjCUnusedIVarsChecker.cpp b/lib/Checker/ObjCUnusedIVarsChecker.cpp
index 04d897a..0e47621 100644
--- a/lib/Checker/ObjCUnusedIVarsChecker.cpp
+++ b/lib/Checker/ObjCUnusedIVarsChecker.cpp
@@ -150,8 +150,7 @@
     if (I->second == Unused) {
       std::string sbuf;
       llvm::raw_string_ostream os(sbuf);
-      os << "Instance variable '" << I->first->getNameAsString()
-         << "' in class '" << ID->getNameAsString()
+      os << "Instance variable '" << I->first << "' in class '" << ID
          << "' is never used by the methods in its @implementation "
             "(although it may be used by category methods).";