[llvm] [DWARFVerifier] Allow overlapping ranges for ICF-merged functions (PR #117952)

[David Blaikie via llvm-commits]

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@@ -622,7 +627,8 @@ unsigned DWARFVerifier::verifyDieRanges(const DWARFDie &Die,
   }
 
   // Verify that children don't intersect.
-  const auto IntersectingChild = ParentRI.insert(RI);
+  bool AllowDuplicates = Die.getTag() == DW_TAG_subprogram;
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dwblaikie wrote:

Why restrict this to subprograms having duplicates? Presumably anything could have duplicates - if we can have subprograms with duplicates (is this duplicates within a subprogram, or between subprograms, or both?) then we can probably have lexical scopes with duplicates too? (& certainly CUs with duplicates - both within a CU and across multiple CUs)

https://github.com/llvm/llvm-project/pull/117952