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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- O P T --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2021, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING3. If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
package body Opt is
-------------------------
-- Back_End_Exceptions --
-------------------------
function Back_End_Exceptions return Boolean is
begin
return
Exception_Mechanism = Back_End_SJLJ
or else
Exception_Mechanism = Back_End_ZCX;
end Back_End_Exceptions;
-------------------------
-- Front_End_Exceptions --
-------------------------
function Front_End_Exceptions return Boolean is
begin
return Exception_Mechanism = Front_End_SJLJ;
end Front_End_Exceptions;
--------------------
-- SJLJ_Exceptions --
--------------------
function SJLJ_Exceptions return Boolean is
begin
return
Exception_Mechanism = Back_End_SJLJ
or else
Exception_Mechanism = Front_End_SJLJ;
end SJLJ_Exceptions;
--------------------
-- ZCX_Exceptions --
--------------------
function ZCX_Exceptions return Boolean is
begin
return Exception_Mechanism = Back_End_ZCX;
end ZCX_Exceptions;
------------------------------
-- Register_Config_Switches --
------------------------------
procedure Register_Config_Switches is
begin
Ada_Version_Config := Ada_Version;
Ada_Version_Pragma_Config := Ada_Version_Pragma;
Ada_Version_Explicit_Config := Ada_Version_Explicit;
Assertions_Enabled_Config := Assertions_Enabled;
Assume_No_Invalid_Values_Config := Assume_No_Invalid_Values;
Check_Float_Overflow_Config := Check_Float_Overflow;
Check_Policy_List_Config := Check_Policy_List;
Default_Pool_Config := Default_Pool;
Default_SSO_Config := Default_SSO;
Dynamic_Elaboration_Checks_Config := Dynamic_Elaboration_Checks;
Exception_Locations_Suppressed_Config := Exception_Locations_Suppressed;
External_Name_Exp_Casing_Config := External_Name_Exp_Casing;
External_Name_Imp_Casing_Config := External_Name_Imp_Casing;
Fast_Math_Config := Fast_Math;
Initialize_Scalars_Config := Initialize_Scalars;
No_Component_Reordering_Config := No_Component_Reordering;
Optimize_Alignment_Config := Optimize_Alignment;
Persistent_BSS_Mode_Config := Persistent_BSS_Mode;
Prefix_Exception_Messages_Config := Prefix_Exception_Messages;
SPARK_Mode_Config := SPARK_Mode;
SPARK_Mode_Pragma_Config := SPARK_Mode_Pragma;
Uneval_Old_Config := Uneval_Old;
Use_VADS_Size_Config := Use_VADS_Size;
Warnings_As_Errors_Count_Config := Warnings_As_Errors_Count;
-- Reset the indication that Optimize_Alignment was set locally, since
-- if we had a pragma in the config file, it would set this flag True,
-- but that's not a local setting.
Optimize_Alignment_Local := False;
end Register_Config_Switches;
-----------------------------
-- Restore_Config_Switches --
-----------------------------
procedure Restore_Config_Switches (Save : Config_Switches_Type) is
begin
Ada_Version := Save.Ada_Version;
Ada_Version_Pragma := Save.Ada_Version_Pragma;
Ada_Version_Explicit := Save.Ada_Version_Explicit;
Assertions_Enabled := Save.Assertions_Enabled;
Assume_No_Invalid_Values := Save.Assume_No_Invalid_Values;
Check_Float_Overflow := Save.Check_Float_Overflow;
Check_Policy_List := Save.Check_Policy_List;
Default_Pool := Save.Default_Pool;
Default_SSO := Save.Default_SSO;
Dynamic_Elaboration_Checks := Save.Dynamic_Elaboration_Checks;
Exception_Locations_Suppressed := Save.Exception_Locations_Suppressed;
External_Name_Exp_Casing := Save.External_Name_Exp_Casing;
External_Name_Imp_Casing := Save.External_Name_Imp_Casing;
Fast_Math := Save.Fast_Math;
Initialize_Scalars := Save.Initialize_Scalars;
No_Component_Reordering := Save.No_Component_Reordering;
Optimize_Alignment := Save.Optimize_Alignment;
Optimize_Alignment_Local := Save.Optimize_Alignment_Local;
Persistent_BSS_Mode := Save.Persistent_BSS_Mode;
Prefix_Exception_Messages := Save.Prefix_Exception_Messages;
SPARK_Mode := Save.SPARK_Mode;
SPARK_Mode_Pragma := Save.SPARK_Mode_Pragma;
Uneval_Old := Save.Uneval_Old;
Use_VADS_Size := Save.Use_VADS_Size;
Warnings_As_Errors_Count := Save.Warnings_As_Errors_Count;
-- Update consistently the value of Init_Or_Norm_Scalars. The value of
-- Normalize_Scalars is not saved/restored because after set to True its
-- value is never changed. That is, if a compilation unit has pragma
-- Normalize_Scalars then it forces that value for all with'ed units.
Init_Or_Norm_Scalars := Initialize_Scalars or Normalize_Scalars;
end Restore_Config_Switches;
--------------------------
-- Save_Config_Switches --
--------------------------
function Save_Config_Switches return Config_Switches_Type is
begin
return
(Ada_Version => Ada_Version,
Ada_Version_Pragma => Ada_Version_Pragma,
Ada_Version_Explicit => Ada_Version_Explicit,
Assertions_Enabled => Assertions_Enabled,
Assume_No_Invalid_Values => Assume_No_Invalid_Values,
Check_Float_Overflow => Check_Float_Overflow,
Check_Policy_List => Check_Policy_List,
Default_Pool => Default_Pool,
Default_SSO => Default_SSO,
Dynamic_Elaboration_Checks => Dynamic_Elaboration_Checks,
Exception_Locations_Suppressed => Exception_Locations_Suppressed,
External_Name_Exp_Casing => External_Name_Exp_Casing,
External_Name_Imp_Casing => External_Name_Imp_Casing,
Fast_Math => Fast_Math,
Initialize_Scalars => Initialize_Scalars,
No_Component_Reordering => No_Component_Reordering,
Normalize_Scalars => Normalize_Scalars,
Optimize_Alignment => Optimize_Alignment,
Optimize_Alignment_Local => Optimize_Alignment_Local,
Persistent_BSS_Mode => Persistent_BSS_Mode,
Prefix_Exception_Messages => Prefix_Exception_Messages,
SPARK_Mode => SPARK_Mode,
SPARK_Mode_Pragma => SPARK_Mode_Pragma,
Uneval_Old => Uneval_Old,
Use_VADS_Size => Use_VADS_Size,
Warnings_As_Errors_Count => Warnings_As_Errors_Count);
end Save_Config_Switches;
-------------------------
-- Set_Config_Switches --
-------------------------
procedure Set_Config_Switches
(Internal_Unit : Boolean;
Main_Unit : Boolean)
is
begin
-- Case of internal unit
if Internal_Unit then
-- Set standard switches. Note we do NOT set Ada_Version_Explicit
-- since the whole point of this is that it still properly indicates
-- the configuration setting even in a run time unit.
Ada_Version := Ada_Version_Runtime;
Ada_Version_Pragma := Empty;
Default_SSO := ' ';
Dynamic_Elaboration_Checks := False;
External_Name_Exp_Casing := As_Is;
External_Name_Imp_Casing := Lowercase;
No_Component_Reordering := False;
Optimize_Alignment := 'O';
Optimize_Alignment_Local := True;
Persistent_BSS_Mode := False;
Prefix_Exception_Messages := True;
Uneval_Old := 'E';
Use_VADS_Size := False;
-- Note: we do not need to worry about Warnings_As_Errors_Count since
-- we do not expect to get any warnings from compiling such a unit.
-- For an internal unit, assertions/debug pragmas are off unless this
-- is the main unit and they were explicitly enabled, or unless the
-- main unit was compiled in GNAT mode. We also make sure we do not
-- assume that values are necessarily valid and that SPARK_Mode is
-- set to its configuration value.
if Main_Unit then
Assertions_Enabled := Assertions_Enabled_Config;
Assume_No_Invalid_Values := Assume_No_Invalid_Values_Config;
Check_Policy_List := Check_Policy_List_Config;
SPARK_Mode := SPARK_Mode_Config;
SPARK_Mode_Pragma := SPARK_Mode_Pragma_Config;
else
-- In GNATprove mode assertions should be always enabled, even
-- when analysing internal units.
if GNATprove_Mode then
pragma Assert (Assertions_Enabled);
null;
elsif GNAT_Mode_Config then
Assertions_Enabled := Assertions_Enabled_Config;
else
Assertions_Enabled := False;
end if;
Assume_No_Invalid_Values := False;
Check_Policy_List := Empty;
SPARK_Mode := None;
SPARK_Mode_Pragma := Empty;
end if;
-- Case of non-internal unit
else
Ada_Version := Ada_Version_Config;
Ada_Version_Pragma := Ada_Version_Pragma_Config;
Ada_Version_Explicit := Ada_Version_Explicit_Config;
Assertions_Enabled := Assertions_Enabled_Config;
Assume_No_Invalid_Values := Assume_No_Invalid_Values_Config;
Check_Float_Overflow := Check_Float_Overflow_Config;
Check_Policy_List := Check_Policy_List_Config;
Default_SSO := Default_SSO_Config;
Dynamic_Elaboration_Checks := Dynamic_Elaboration_Checks_Config;
External_Name_Exp_Casing := External_Name_Exp_Casing_Config;
External_Name_Imp_Casing := External_Name_Imp_Casing_Config;
Fast_Math := Fast_Math_Config;
Initialize_Scalars := Initialize_Scalars_Config;
No_Component_Reordering := No_Component_Reordering_Config;
Optimize_Alignment := Optimize_Alignment_Config;
Optimize_Alignment_Local := False;
Persistent_BSS_Mode := Persistent_BSS_Mode_Config;
Prefix_Exception_Messages := Prefix_Exception_Messages_Config;
SPARK_Mode := SPARK_Mode_Config;
SPARK_Mode_Pragma := SPARK_Mode_Pragma_Config;
Uneval_Old := Uneval_Old_Config;
Use_VADS_Size := Use_VADS_Size_Config;
Warnings_As_Errors_Count := Warnings_As_Errors_Count_Config;
-- Update consistently the value of Init_Or_Norm_Scalars. The value
-- of Normalize_Scalars is not saved/restored because once set to
-- True its value is never changed. That is, if a compilation unit
-- has pragma Normalize_Scalars then it forces that value for all
-- with'ed units.
Init_Or_Norm_Scalars := Initialize_Scalars or Normalize_Scalars;
end if;
-- Values set for all units
Default_Pool := Default_Pool_Config;
Exception_Locations_Suppressed := Exception_Locations_Suppressed_Config;
Fast_Math := Fast_Math_Config;
end Set_Config_Switches;
end Opt;
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