ada: Untangle check for restriction No_Implementation_Attributes

Code cleanup; given that no attribute is both defined by Ada 83 and specific to
GNAT, the semantics is unaffected.

gcc/ada/ChangeLog:

	* sem_attr.adb (Analyze_Attribute): Simplify logic.

diff --git a/gcc/ada/sem_attr.adb b/gcc/ada/sem_attr.adb
index 53b96501d788124d1077f41f274acf86676b70d3..39725d23442b23aa46409ad4490de82bf35ae8d2 100644 (file)
--- a/gcc/ada/sem_attr.adb
+++ b/gcc/ada/sem_attr.adb
@@ -3214,26 +3214,23 @@ package body Sem_Attr is
 
          --  Deal with Ada 83 issues
 
-         if not Attribute_83 (Attr_Id) then
-            if Ada_Version = Ada_83 then
-               Error_Msg_Name_1 := Aname;
-               Error_Msg_N ("(Ada 83) attribute% is not standard??", N);
-            end if;
-
-            if Attribute_Impl_Def (Attr_Id) then
-               Check_Restriction (No_Implementation_Attributes, N);
-            end if;
+         if not Attribute_83 (Attr_Id) and then Ada_Version = Ada_83 then
+            Error_Msg_Name_1 := Aname;
+            Error_Msg_N ("(Ada 83) attribute% is not standard??", N);
          end if;
 
          --  Deal with Ada 2005 attributes that are implementation attributes
          --  because they appear in a version of Ada before Ada 2005, ditto for
          --  Ada 2012 and Ada 2022 attributes appearing in an earlier version.
+         --  Likewise for GNAT implementation-defined attributes.
 
          if (Attribute_05 (Attr_Id) and then Ada_Version < Ada_2005)
                or else
             (Attribute_12 (Attr_Id) and then Ada_Version < Ada_2012)
                or else
             (Attribute_22 (Attr_Id) and then Ada_Version < Ada_2022)
+               or else
+            Attribute_Impl_Def (Attr_Id)
          then
             Check_Restriction (No_Implementation_Attributes, N);
          end if;