[clang-tools-extra] [llvm] [LLVM][Support] Move default values out of the storage (PR #184581)

[Yevgeny Rouban via llvm-commits]

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@@ -1722,6 +1722,11 @@ class list : public Option, public list_storage<DataType, StorageClass> {
     Parser.initialize();
   }
 
+protected:
+  bool isDefaultAssigned() const { return DefaultAssigned; }
+  void overwriteDefault() { DefaultAssigned = false; }
+  ArrayRef<OptionValue<DataType>> getDefault() const { return Default; }
+
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yrouban wrote:

I bit strange to see intro of these methods without any usage. May be it makes sense to elaborate on how it is connected with 'fixing mlir use case'?

https://github.com/llvm/llvm-project/pull/184581