[TableGen] Use range-based for loops (NFC) (#146626)

Author: kazutakahirata

clang/utils/TableGen/ClangAttrEmitter.cpp

@@ -4904,9 +4904,8 @@ void EmitClangAttrParsedAttrImpl(const RecordKeeper &Records, raw_ostream &OS) {
   }
 
   OS << "static const ParsedAttrInfo *AttrInfoMap[] = {\n";
-  for (auto I = Attrs.begin(), E = Attrs.end(); I != E; ++I) {
-    OS << "&ParsedAttrInfo" << I->first << "::Instance,\n";
-  }
+  for (const auto &Attr : Attrs)
+    OS << "&ParsedAttrInfo" << Attr.first << "::Instance,\n";
   OS << "};\n\n";
 
   // Generate function for handling attributes with delayed arguments
@@ -5261,10 +5260,9 @@ GetAttributeHeadingAndSpellings(const Record &Documentation,
       Heading = Spellings.begin()->name();
     else {
       std::set<std::string> Uniques;
-      for (auto I = Spellings.begin(), E = Spellings.end();
-           I != E; ++I) {
+      for (const FlattenedSpelling &FS : Spellings) {
         std::string Spelling =
-            NormalizeNameForSpellingComparison(I->name()).str();
+            NormalizeNameForSpellingComparison(FS.name()).str();
         Uniques.insert(Spelling);
       }
       // If the semantic map has only one spelling, that is sufficient for our