[Ada] Avoid potentially repeated calls to Prefix in Eval_Slice

gcc/ada/

	* sem_eval.adb (Eval_Slice): Refactor repeated calls to Prefix
	with a local constant (named just like in Resolve_Slice).

diff --git a/gcc/ada/sem_eval.adb b/gcc/ada/sem_eval.adb
index e453bc1676b8a0f64aba6a12791b3962e7d19588..4dc524817b6d6ece13f764c649c47a68aa637a3e 100644 (file)
--- a/gcc/ada/sem_eval.adb
+++ b/gcc/ada/sem_eval.adb
@@ -3944,6 +3944,7 @@ package body Sem_Eval is
 
    procedure Eval_Slice (N : Node_Id) is
       Drange : constant Node_Id := Discrete_Range (N);
+      Name   : constant Node_Id := Prefix (N);
 
    begin
       if Nkind (Drange) = N_Range then
@@ -3955,9 +3956,9 @@ package body Sem_Eval is
       --  the type of A, is redundant, the slice can be replaced with A, and
       --  this is worth a warning.
 
-      if Is_Entity_Name (Prefix (N)) then
+      if Is_Entity_Name (Name) then
          declare
-            E : constant Entity_Id := Entity (Prefix (N));
+            E : constant Entity_Id := Entity (Name);
             T : constant Entity_Id := Etype (E);
 
          begin