trans.c (lvalue_required_p): Remove ALIASED parameter and adjust recursive calls.

	* gcc-interface/trans.c (lvalue_required_p): Remove ALIASED parameter
	and adjust recursive calls.
	(Identifier_to_gnu): Adjust calls to lvalue_required_p.
	(gnat_to_gnu): Likewise.

From-SVN: r262496

gcc/ada/ChangeLog

 2018-07-07  Eric Botcazou  <ebotcazou@adacore.com>
 
+	* gcc-interface/trans.c (lvalue_required_p): Remove ALIASED parameter
+	and adjust recursive calls.
+	(Identifier_to_gnu): Adjust calls to lvalue_required_p.
+	(gnat_to_gnu): Likewise.
+
+2018-07-07  Eric Botcazou  <ebotcazou@adacore.com>
+
 	* gcc-interface/decl.c (gnat_to_gnu_param): Minor tweak.
 	(gnat_to_gnu_subprog_type): New pure_flag local variable.  Set it for
 	a pure Ada function with a by-ref In parameter.  Propagate it onto the

gcc/ada/gcc-interface/trans.c

@@ -246,7 +246,7 @@ static tree maybe_implicit_deref (tree);
 static void set_expr_location_from_node (tree, Node_Id, bool = false);
 static void set_gnu_expr_location_from_node (tree, Node_Id);
 static bool set_end_locus_from_node (tree, Node_Id);
-static int lvalue_required_p (Node_Id, tree, bool, bool, bool);
+static int lvalue_required_p (Node_Id, tree, bool, bool);
 static tree build_raise_check (int, enum exception_info_kind);
 static tree create_init_temporary (const char *, tree, tree *, Node_Id);
 
@@ -806,8 +806,8 @@ lvalue_required_for_attribute_p (Node_Id gnat_node)
    is the type that will be used for GNAT_NODE in the translated GNU tree.
    CONSTANT indicates whether the underlying object represented by GNAT_NODE
    is constant in the Ada sense.  If it is, ADDRESS_OF_CONSTANT indicates
-   whether its value is the address of a constant and ALIASED whether it is
-   aliased.  If it isn't, ADDRESS_OF_CONSTANT and ALIASED are ignored.
+   whether its value is the address of another constant.  If it isn't, then
+   ADDRESS_OF_CONSTANT is ignored.
 
    The function climbs up the GNAT tree starting from the node and returns 1
    upon encountering a node that effectively requires an lvalue downstream.
@@ -816,7 +816,7 @@ lvalue_required_for_attribute_p (Node_Id gnat_node)
 
 static int
 lvalue_required_p (Node_Id gnat_node, tree gnu_type, bool constant,
-		   bool address_of_constant, bool aliased)
+		   bool address_of_constant)
 {
   Node_Id gnat_parent = Parent (gnat_node), gnat_temp;
 
@@ -861,14 +861,12 @@ lvalue_required_p (Node_Id gnat_node, tree gnu_type, bool constant,
       if (Prefix (gnat_parent) != gnat_node)
 	return 0;
 
-      aliased |= Has_Aliased_Components (Etype (gnat_node));
       return lvalue_required_p (gnat_parent, gnu_type, constant,
-				address_of_constant, aliased);
+				address_of_constant);
 
     case N_Selected_Component:
-      aliased |= Is_Aliased (Entity (Selector_Name (gnat_parent)));
       return lvalue_required_p (gnat_parent, gnu_type, constant,
-				address_of_constant, aliased);
+				address_of_constant);
 
     case N_Object_Renaming_Declaration:
       /* We need to preserve addresses through a renaming.  */
@@ -908,7 +906,7 @@ lvalue_required_p (Node_Id gnat_node, tree gnu_type, bool constant,
 	 an intermediate conversion that is meant to be purely formal.  */
      return lvalue_required_p (gnat_parent,
 			       get_unpadded_type (Etype (gnat_parent)),
-			       constant, address_of_constant, aliased);
+			       constant, address_of_constant);
 
     case N_Allocator:
       /* We should only reach here through the N_Qualified_Expression case.
@@ -922,7 +920,7 @@ lvalue_required_p (Node_Id gnat_node, tree gnu_type, bool constant,
       if (constant && address_of_constant)
 	return lvalue_required_p (gnat_parent,
 				  get_unpadded_type (Etype (gnat_parent)),
-				  true, false, true);
+				  true, false);
 
       /* ... fall through ... */
 
@@ -1123,8 +1121,8 @@ Identifier_to_gnu (Node_Id gnat_node, tree *gnu_result_type_p)
       && !Is_Imported (gnat_temp)
       && Present (Address_Clause (gnat_temp)))
     {
-      require_lvalue = lvalue_required_p (gnat_node, gnu_result_type, true,
-					  false, Is_Aliased (gnat_temp));
+      require_lvalue
+	= lvalue_required_p (gnat_node, gnu_result_type, true, false);
       use_constant_initializer = !require_lvalue;
     }
 
@@ -1161,7 +1159,7 @@ Identifier_to_gnu (Node_Id gnat_node, tree *gnu_result_type_p)
       else if (TREE_CODE (gnu_result) == CONST_DECL
 	       && !(DECL_CONST_ADDRESS_P (gnu_result)
 		    && lvalue_required_p (gnat_node, gnu_result_type, true,
-					  true, false)))
+					  true)))
 	gnu_result = DECL_INITIAL (gnu_result);
 
       /* If it's a renaming pointer, get to the renamed object.  */
@@ -1201,7 +1199,7 @@ Identifier_to_gnu (Node_Id gnat_node, tree *gnu_result_type_p)
       if ((!constant_only || address_of_constant) && require_lvalue < 0)
 	require_lvalue
 	  = lvalue_required_p (gnat_node, gnu_result_type, true,
-			       address_of_constant, Is_Aliased (gnat_temp));
+			       address_of_constant);
 
       /* Finally retrieve the initializer if this is deemed valid.  */
       if ((constant_only && !address_of_constant) || !require_lvalue)
@@ -1217,8 +1215,7 @@ Identifier_to_gnu (Node_Id gnat_node, tree *gnu_result_type_p)
     {
       if (require_lvalue < 0)
 	require_lvalue
-	  = lvalue_required_p (gnat_node, gnu_result_type, true, false,
-			       Is_Aliased (gnat_temp));
+	  = lvalue_required_p (gnat_node, gnu_result_type, true, false);
       if (!require_lvalue)
 	gnu_result = fold_constant_decl_in_expr (gnu_result);
     }
@@ -7860,7 +7857,7 @@ gnat_to_gnu (Node_Id gnat_node)
 	  || kind == N_Indexed_Component
 	  || kind == N_Selected_Component)
       && TREE_CODE (get_base_type (gnu_result_type)) == BOOLEAN_TYPE
-      && !lvalue_required_p (gnat_node, gnu_result_type, false, false, false))
+      && !lvalue_required_p (gnat_node, gnu_result_type, false, false))
     {
       gnu_result
 	= build_binary_op (NE_EXPR, gnu_result_type,