[clang] [Sema] Keep attribute lists in the order the attributes were parsed (PR #162714)

[Saleem Abdulrasool via cfe-commits]

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@@ -856,19 +856,19 @@ class ParsedAttributesView {
     friend class ParsedAttributesView;
   };
 
-  void addAll(iterator B, iterator E) {
+  void prependAll(iterator B, iterator E) {
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compnerd wrote:

Does it make sense to consider the C++ STL behaviours? The `All` suffix would generally not be something that the C++ STL would ever use as you are giving an iterator range, so you know that it is everything in that range. That is, `prepend(attributes.begin(), attributes.end())` which is often spelt `insert(0, attributes.begin(), attributes.end())`

https://github.com/llvm/llvm-project/pull/162714