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[Ada] Couple of small cleanups for Cloned_Subtype

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No functional changes.

gcc/ada/

	* exp_util.adb (Make_Subtype_From_Expr): Do not set field to Empty.
	* sem_util.adb (Visit_Itype): Remove ??? comment.
This commit is contained in:
Eric Botcazou 2022-06-09 00:24:34 +02:00 committed by Pierre-Marie de Rodat
parent a2eaf87ffe
commit d2672ffea0
2 changed files with 5 additions and 7 deletions
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9
gcc/ada/exp_util.adb
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@ -10213,8 +10213,8 @@ package body Exp_Util is
elsif Is_Class_Wide_Type (Unc_Typ) then
declare
CW_Subtype : Entity_Id;
EQ_Typ : Entity_Id := Empty;
CW_Subtype : constant Entity_Id :=
New_Class_Wide_Subtype (Unc_Typ, E);
begin
-- A class-wide equivalent type is not needed on VM targets
@ -10237,11 +10237,10 @@ package body Exp_Util is
Set_Etype (Unc_Typ, Base_Type (Full_View (Etype (Unc_Typ))));
end if;
EQ_Typ := Make_CW_Equivalent_Type (Unc_Typ, E);
Set_Equivalent_Type
(CW_Subtype, Make_CW_Equivalent_Type (Unc_Typ, E));
end if;
CW_Subtype := New_Class_Wide_Subtype (Unc_Typ, E);
Set_Equivalent_Type (CW_Subtype, EQ_Typ);
Set_Cloned_Subtype (CW_Subtype, Base_Type (Unc_Typ));
return New_Occurrence_Of (CW_Subtype, Loc);

3
gcc/ada/sem_util.adb
View File

@ -25146,8 +25146,7 @@ package body Sem_Util is
end if;
-- If a record subtype is simply copied, the entity list will be
-- shared. Thus cloned_Subtype must be set to indicate the sharing.
-- ??? What does this do?
-- shared, so Cloned_Subtype must be set to indicate this.
if Ekind (Itype) in E_Class_Wide_Subtype | E_Record_Subtype then
Set_Cloned_Subtype (New_Itype, Itype);