down.diff

@@ -117,9 +113,7 @@ bool ABIInfo::isPromotableIntegerTypeForABI(QualType Ty) const {
   return false;
 }
 
-ABIInfo::~ABIInfo() = default;
-
-SwiftABIInfo::~SwiftABIInfo() = default;
+ABIInfo::~ABIInfo() {}
 
 /// Does the given lowering require more than the given number of
 /// registers when expanded?

up.diff

@@ -117,10 +113,8 @@
   return false;
 }
 
-ABIInfo::~ABIInfo() = default;
+ABIInfo::~ABIInfo() {}
 
-SwiftABIInfo::~SwiftABIInfo() = default;
-
 /// Does the given lowering require more than the given number of
 /// registers when expanded?
 ///