[gcc r12-3754] [Ada] Spurious dynamic accessibility check on allocator

[gcc r12-3754] [Ada] Spurious dynamic accessibility check on allocator

[Pierre-Marie de Rodat]

https://gcc.gnu.org/g:7d9735bbb88b6e61e5405d7c99e6cc97112e7a41

commit r12-3754-g7d9735bbb88b6e61e5405d7c99e6cc97112e7a41
Author: Justin Squirek <squirek@adacore.com>
Date:   Thu Jul 8 20:33:05 2021 -0400

    [Ada] Spurious dynamic accessibility check on allocator
    
    gcc/ada/
    
            * sem_util.adb (Accessibility_Level): Remove spurious special
            case for protected type components.
            * exp_ch4.adb (Generate_Accessibility_Check): Use general
            Accessibility_Level instead of the low-level function
            Type_Access_Level.

Diff:
---
 gcc/ada/exp_ch4.adb  |  3 +--
 gcc/ada/sem_util.adb | 11 -----------
 2 files changed, 1 insertion(+), 13 deletions(-)

diff --git a/gcc/ada/exp_ch4.adb b/gcc/ada/exp_ch4.adb
index cf9899d76c8..497a52ba05d 100644
--- a/gcc/ada/exp_ch4.adb
+++ b/gcc/ada/exp_ch4.adb
@@ -767,8 +767,7 @@ package body Exp_Ch4 is
             Cond :=
               Make_Op_Gt (Loc,
                 Left_Opnd  => Cond,
-                Right_Opnd =>
-                  Make_Integer_Literal (Loc, Type_Access_Level (PtrT)));
+                Right_Opnd => Accessibility_Level (N, Dynamic_Level));
 
             --  Due to the complexity and side effects of the check, utilize an
             --  if statement instead of the regular Program_Error circuitry.
diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index 5fd72667e99..45a338a927b 100644
--- a/gcc/ada/sem_util.adb
+++ b/gcc/ada/sem_util.adb
@@ -728,17 +728,6 @@ package body Sem_Util is
                return Make_Level_Literal
                         (Typ_Access_Level (Etype (E)));
 
-            --  When E is a component of the current instance of a
-            --  protected type, we assume the level to be deeper than that of
-            --  the type itself.
-
-            elsif not Is_Overloadable (E)
-              and then Ekind (Scope (E)) = E_Protected_Type
-              and then Comes_From_Source (Scope (E))
-            then
-               return Make_Level_Literal
-                        (Scope_Depth (Enclosing_Dynamic_Scope (E)) + 1);
-
             --  Check if E is an expansion-generated renaming of an iterator
             --  by examining Related_Expression. If so, determine the
             --  accessibility level based on the original expression.