[COMMITTED] ada: Fix repeated killing of private entity values

["Marc Poulhiès" <poulhies@adacore.com>]

From: Piotr Trojanek <trojanek@adacore.com>

When killing known values of assignable entities we iterated from
First_Entity and then again from First_Private_Entity. This second
iteration was unnecessary, because the entity chain that starts with
First_Entity contains all entities, including the private ones.

This is just a performance improvement; the behavior is unchanged.

gcc/ada/

	* sem_util.adb (Kill_Current_Values): Only iterate from
	First_Entity through Next_Entity.

Tested on x86_64-pc-linux-gnu, committed on master.

---
 gcc/ada/sem_util.adb | 38 +++++++++-----------------------------
 1 file changed, 9 insertions(+), 29 deletions(-)

diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index 9eeaf7cc05b..28396a4c34b 100644
--- a/gcc/ada/sem_util.adb
+++ b/gcc/ada/sem_util.adb
@@ -22287,25 +22287,6 @@ package body Sem_Util is
    procedure Kill_Current_Values (Last_Assignment_Only : Boolean := False) is
       S : Entity_Id;
 
-      procedure Kill_Current_Values_For_Entity_Chain (E : Entity_Id);
-      --  Clear current value for entity E and all entities chained to E
-
-      ------------------------------------------
-      -- Kill_Current_Values_For_Entity_Chain --
-      ------------------------------------------
-
-      procedure Kill_Current_Values_For_Entity_Chain (E : Entity_Id) is
-         Ent : Entity_Id;
-      begin
-         Ent := E;
-         while Present (Ent) loop
-            Kill_Current_Values (Ent, Last_Assignment_Only);
-            Next_Entity (Ent);
-         end loop;
-      end Kill_Current_Values_For_Entity_Chain;
-
-   --  Start of processing for Kill_Current_Values
-
    begin
       --  Kill all saved checks, a special case of killing saved values
 
@@ -22321,16 +22302,15 @@ package body Sem_Util is
 
          --  Clear current values of all entities in current scope
 
-         Kill_Current_Values_For_Entity_Chain (First_Entity (S));
-
-         --  If scope is a package, also clear current values of all private
-         --  entities in the scope.
-
-         if Is_Package_Or_Generic_Package (S)
-           or else Is_Concurrent_Type (S)
-         then
-            Kill_Current_Values_For_Entity_Chain (First_Private_Entity (S));
-         end if;
+         declare
+            Ent : Entity_Id;
+         begin
+            Ent := First_Entity (S);
+            while Present (Ent) loop
+               Kill_Current_Values (Ent, Last_Assignment_Only);
+               Next_Entity (Ent);
+            end loop;
+         end;
 
          --  If this is a not a subprogram, deal with parents
 
-- 
2.34.1