Per offline discussion with Steve Naroff, add back Type::getAsXXXType() methods

until Doug Gregor's Type smart pointer code lands (or more discussion occurs).
These methods just call the new Type::getAs<XXX> methods, so we still have
reduced implementation redundancy. Having explicit getAsXXXType() methods makes
it easier to set breakpoints in the debugger.

llvm-svn: 76193

clang/lib/CodeGen/CodeGenModule.cpp

@@ -1251,7 +1251,7 @@ GetAddrOfConstantCFString(const StringLiteral *Literal) {
   }
   
   QualType CFTy = getContext().getCFConstantStringType();
-  RecordDecl *CFRD = CFTy->getAs<RecordType>()->getDecl();
+  RecordDecl *CFRD = CFTy->getAsRecordType()->getDecl();
 
   const llvm::StructType *STy = 
     cast<llvm::StructType>(getTypes().ConvertType(CFTy));