Fix compiler namespace warnings and deprecated getValues

Fix warnings by using an anonymous namespace instead of `static` and by
replacing deprecated `getValues` with `getElements`.

Author: Flakebi

lib/TableGen/Common.cpp

@@ -28,10 +28,12 @@
 using namespace llvm_dialects;
 using namespace llvm;
 
-static cl::opt<bool>
+namespace {
+cl::opt<bool>
     g_emitComments("emit-comments",
                    cl::desc("emit debug comments in generated source files"),
                    cl::Hidden, cl::init(false));
+} // namespace
 
 void llvm_dialects::emitHeader(raw_ostream& out) {
   out << "// DO NOT EDIT! This file is automatically generated by llvm-dialects-tblgen.\n\n";

lib/TableGen/Operations.cpp

@@ -322,7 +322,7 @@ void OperationBase::parseValueTraits(raw_ostream &errs, RecordTy *record,
   }
 
   const ListInit *List = record->getValueAsListInit("value_traits");
-  for (const Init *I : List->getValues()) {
+  for (const Init *I : List->getElements()) {
     if (const DagInit *DI = dyn_cast<DagInit>(I)) {
       if (DI->getNumArgs() != 1) {
         errs << "value_traits " << *DI << " is missing argument name";