[llvm] [ADT] Add set_intersects to check if there is any intersection (PR #127907)

[Teresa Johnson via llvm-commits]

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@@ -157,6 +157,23 @@ bool set_is_subset(const S1Ty &S1, const S2Ty &S2) {
   return true;
 }
 
+template <class S1Ty, class S2Ty>
+bool set_intersects_impl(const S1Ty &S1, const S2Ty &S2) {
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teresajohnson wrote:

done

https://github.com/llvm/llvm-project/pull/127907