Make DeclRefBase a Val, and DeclRef<T> a helper class. (#2967)

* Make DeclRefBase a Val, and DeclRef<T> a helper class.

* Fixes.

* Workaround gcc parser issue.

* Revert NodeOperand change.

* Fix.

* Fix clang incomplete class complains.

* Fix code review.

* Small cleanups and improvements.

---------

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 2 insertions, 5 deletions

diff --git a/source/slang/slang-check-type.cpp b/source/slang/slang-check-type.cpp
index a5a46c435..d62d60db4 100644
--- a/source/slang/slang-check-type.cpp
+++ b/source/slang/slang-check-type.cpp
@@ -188,12 +188,9 @@ namespace Slang
         }
 
         GenericSubstitution* subst = m_astBuilder->getOrCreateGenericSubstitution(
-            genericDeclRef.getDecl(), evaledArgs, genericDeclRef.substitutions.substitutions);
-
-        DeclRef<Decl> innerDeclRef;
-        innerDeclRef.decl = getInner(genericDeclRef);
-        innerDeclRef.substitutions = SubstitutionSet(subst);
+            genericDeclRef.getDecl(), evaledArgs, genericDeclRef.getSubst());
 
+        DeclRef<Decl> innerDeclRef = m_astBuilder->getSpecializedDeclRef(getInner(genericDeclRef), subst);
         return DeclRefType::create(m_astBuilder, innerDeclRef);
     }