[llvm] [ThinLTO] Add HasLocal flag to GlobalValueSummaryInfo (PR #164647)

[Teresa Johnson via llvm-commits]

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@@ -183,6 +185,22 @@ struct alignas(8) GlobalValueSummaryInfo {
   /// compiling without sufficient distinguishing path, or (theoretically) hash
   /// collisions. Each summary is from a different module.
   GlobalValueSummaryList SummaryList;
+
+  /// True if the SummaryList contains at least one summary with local linkage.
+  /// In most cases there should be only one, unless translation units with
+  /// same-named locals were compiled without distinguishing path. And generally
+  /// there should not be a mix of local and non-local summaries, because the
+  /// GUID for a local is computed with the path prepended and a ':' delimiter.
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teresajohnson wrote:

Thanks, forgot about that change. I'll update the comment and PR description accordingly

https://github.com/llvm/llvm-project/pull/164647