[llvm] [IR] Inroduce ModuleToSummariesForIndexTy (NFC) (PR #105906)

[Teresa Johnson via llvm-commits]

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@@ -1291,6 +1291,9 @@ using ModulePathStringTableTy = StringMap<ModuleHash>;
 /// a particular module, and provide efficient access to their summary.
 using GVSummaryMapTy = DenseMap<GlobalValue::GUID, GlobalValueSummary *>;
 
+/// Map of a module name to its summary.
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teresajohnson wrote:

s/summary/summaries/. And more accurately, map of a module name to the GUIDs and summaries we will import from that module.

https://github.com/llvm/llvm-project/pull/105906