[llvm] [DwarfDebug] Track abstract entities in DwarfUnit separately (PR #152680)

[David Blaikie via llvm-commits]

================
@@ -53,6 +53,137 @@ struct RangeSpanList {
   SmallVector<RangeSpan, 2> Ranges;
 };
 
+/// Tracks abstract and concrete DIEs for debug info entities of a certain type.
+template <typename DINodeT, typename DbgEntityT> class DINodeInfoHolder {
----------------
dwblaikie wrote:

Maybe this could be DINodeMap?

https://github.com/llvm/llvm-project/pull/152680