[llvm] [TextAPI] Track RPaths in the order its provided via command line. (PR #131665)

[Cyndy Ishida via llvm-commits]

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@@ -83,6 +83,33 @@ using AttrToTargets = std::map<std::string, TargetList>;
 using TargetsToSymbols =
     SmallVector<std::pair<TargetList, std::vector<JSONSymbol>>>;
 
+/// Wrapper over a vector for handling textstub attributes, mapped to target
+/// triples, that require insertion order to be intact in the resulting \c
+/// InterfaceFile.
+class InOrderAttrToTargets {
+  using EntryT = std::pair<std::string, TargetList>;
+
+public:
+  void insert(EntryT &&Entry) {
+    auto &Element = get(Entry.first);
+    Element.second = Entry.second;
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cyndyishida wrote:

Correct, because this purely from (de)serialization  of tbd files and we shouldn't be discovering partial target info.

https://github.com/llvm/llvm-project/pull/131665