[llvm] Compute GUIDs once and store in metadata (PR #184065)

[Mircea Trofin via llvm-commits]

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@@ -989,11 +993,15 @@ class ModuleSummaryIndexBitcodeReader : public BitcodeReaderBase {
   /// is processed and used to avoid repeated hash lookups.
   std::vector<unsigned> StackIdToIndex;
 
+   /// A list of GUIDs defined by this module. Indexed by ValueID.
+   std::vector<uint64_t> DefinedGUIDs;
+ 
 public:
   ModuleSummaryIndexBitcodeReader(
       BitstreamCursor Stream, StringRef Strtab, ModuleSummaryIndex &TheIndex,
       StringRef ModulePath,
-      std::function<bool(GlobalValue::GUID)> IsPrevailing = nullptr);
+      std::function<bool(StringRef)> IsPrevailing = nullptr,
+      std::function<void(ValueInfo)> OnValueInfo = nullptr);
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mtrofin wrote:

may be worth adding a doc comment about the callbacks.

https://github.com/llvm/llvm-project/pull/184065