* exp_util.adb (Expand_Subtype_From_Expr): use the
underlying_record_view when available, to create the proper constrained
subtype for an object of a derived type with unknown discriminants.
2009-04-20 Javier Miranda <miranda@adacore.com>
* exp_ch6.ad (Expand_Inlined_Call): Avoid generation of temporaries for
formals that have pragma unreferenced.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@146414
138bc75d-0d04-0410-961f-
82ee72b054a4
+2009-04-20 Ed Schonberg <schonberg@adacore.com>
+
+ * exp_util.adb (Expand_Subtype_From_Expr): use the
+ underlying_record_view when available, to create the proper constrained
+ subtype for an object of a derived type with unknown discriminants.
+
+2009-04-20 Javier Miranda <miranda@adacore.com>
+
+ * exp_ch6.adb (Expand_Inlined_Call): Avoid generation of temporaries for
+ formals that have pragma unreferenced.
+
2009-04-20 Pascal Obry <obry@adacore.com>
* a-direct.adb (To_Lower_If_Case_Insensitive): Removed.
return;
end if;
+ -- Avoid generation of temporaries for unreferenced formals
+
+ -- What is going on here ??? test below is for *PRAGMA* unreferenced
+ -- not for an unreferenced formal. Is this a bug fix, or simply an
+ -- optimization. Needs comment fix and explanation ???
+
+ if Has_Pragma_Unreferenced (F) then
+ goto Continue;
+ end if;
+
-- If the argument may be a controlling argument in a call within
-- the inlined body, we must preserve its classwide nature to insure
-- that dynamic dispatching take place subsequently. If the formal
Set_Renamed_Object (F, Temp);
end if;
+ <<Continue>>
Next_Formal (F);
Next_Actual (A);
end loop;
then
null;
- -- Nothing to be done for derived types with unknown discriminants if
- -- the parent type also has unknown discriminants.
+ -- Case of derived type with unknown discriminants where the parent type
+ -- also has unknown discriminants.
elsif Is_Record_Type (Unc_Type)
and then not Is_Class_Wide_Type (Unc_Type)
and then Has_Unknown_Discriminants (Unc_Type)
and then Has_Unknown_Discriminants (Underlying_Type (Unc_Type))
then
- null;
+ -- Nothing to be done if no underlying record view available
+
+ if No (Underlying_Record_View (Unc_Type)) then
+ null;
+
+ -- Otherwise use the Underlying_Record_View to create the proper
+ -- constrained subtype for an object of a derived type with unknown
+ -- discriminants.
+
+ else
+ Remove_Side_Effects (Exp);
+ Rewrite (Subtype_Indic,
+ Make_Subtype_From_Expr (Exp, Underlying_Record_View (Unc_Type)));
+ end if;
-- In Ada95, Nothing to be done if the type of the expression is
-- limited, because in this case the expression cannot be copied,