================
@@ -3405,6 +3405,122 @@ getReplacedTemplateParameter(Decl *D, unsigned Index);
/// If we have an implicit instantiation, adjust 'D' to refer to template.
const Decl &adjustDeclToTemplate(const Decl &D);
+/// Represents an explicit instantiation of a template entity in source code.
+///
+/// This node records source location information for an explicit instantiation
+/// statement. It does not participate in name lookup (inherits from Decl, not
+/// NamedDecl), and does not affect code generation. The underlying
+/// specialization decl (FunctionDecl, VarDecl, CXXRecordDecl, etc.) continues
+/// to handle all semantic and codegen responsibilities.
+///
+/// \code
+/// template void ns::foo<int>(int); // function template
+/// extern template struct ns::S<int>; // class template (extern)
+/// template int ns::bar<int>; // variable template
+/// template void ns::S<int>::method(int); // member function
+/// \endcode
+class ExplicitInstantiationDecl : public Decl {
+ /// The underlying specialization being explicitly instantiated.
+ NamedDecl *Specialization = nullptr;
+
+ /// The source range of the entire explicit instantiation statement.
+ SourceRange Range;
----------------
mizvekov wrote:
We can avoid storing this and computing it from the source locations we have.
I am not thinking about only the space savings, which are a bonus, but because
that's one less parameter for the user and one less thing that could be left
inconsistent.
https://github.com/llvm/llvm-project/pull/191658
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