[clang] [Serialization] Load Specializations Lazily (PR #76774)

[Vassil Vassilev via cfe-commits]

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@@ -603,21 +606,30 @@ class ASTReader
   llvm::DenseMap<const DeclContext *,
                  serialization::reader::DeclContextLookupTable> Lookups;
 
+  /// Map from decls to specialized decls.
+  llvm::DenseMap<const Decl *,
+                 serialization::reader::SpecializationsLookupTable>
+      SpecializationsLookups;
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vgvassilev wrote:

We should probably have a mapping between a template argument hash -> vector of DeclIDs.


https://github.com/llvm/llvm-project/pull/76774