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|
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- O P T --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2017, 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Gnatvsn; use Gnatvsn;
with System; use System;
with Tree_IO; use Tree_IO;
package body Opt is
SU : constant := Storage_Unit;
-- Shorthand for System.Storage_Unit
-------------------------
-- 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_Opt_Config_Switches --
----------------------------------
procedure Register_Opt_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;
Extensions_Allowed_Config := Extensions_Allowed;
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;
Polling_Required_Config := Polling_Required;
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_Opt_Config_Switches;
---------------------------------
-- Restore_Opt_Config_Switches --
---------------------------------
procedure Restore_Opt_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;
Extensions_Allowed := Save.Extensions_Allowed;
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;
Polling_Required := Save.Polling_Required;
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_Opt_Config_Switches;
------------------------------
-- Save_Opt_Config_Switches --
------------------------------
procedure Save_Opt_Config_Switches (Save : out Config_Switches_Type) is
begin
Save.Ada_Version := Ada_Version;
Save.Ada_Version_Pragma := Ada_Version_Pragma;
Save.Ada_Version_Explicit := Ada_Version_Explicit;
Save.Assertions_Enabled := Assertions_Enabled;
Save.Assume_No_Invalid_Values := Assume_No_Invalid_Values;
Save.Check_Float_Overflow := Check_Float_Overflow;
Save.Check_Policy_List := Check_Policy_List;
Save.Default_Pool := Default_Pool;
Save.Default_SSO := Default_SSO;
Save.Dynamic_Elaboration_Checks := Dynamic_Elaboration_Checks;
Save.Exception_Locations_Suppressed := Exception_Locations_Suppressed;
Save.Extensions_Allowed := Extensions_Allowed;
Save.External_Name_Exp_Casing := External_Name_Exp_Casing;
Save.External_Name_Imp_Casing := External_Name_Imp_Casing;
Save.Fast_Math := Fast_Math;
Save.Initialize_Scalars := Initialize_Scalars;
Save.No_Component_Reordering := No_Component_Reordering;
Save.Optimize_Alignment := Optimize_Alignment;
Save.Optimize_Alignment_Local := Optimize_Alignment_Local;
Save.Persistent_BSS_Mode := Persistent_BSS_Mode;
Save.Polling_Required := Polling_Required;
Save.Prefix_Exception_Messages := Prefix_Exception_Messages;
Save.SPARK_Mode := SPARK_Mode;
Save.SPARK_Mode_Pragma := SPARK_Mode_Pragma;
Save.Uneval_Old := Uneval_Old;
Save.Use_VADS_Size := Use_VADS_Size;
Save.Warnings_As_Errors_Count := Warnings_As_Errors_Count;
end Save_Opt_Config_Switches;
-----------------------------
-- Set_Opt_Config_Switches --
-----------------------------
procedure Set_Opt_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;
Extensions_Allowed := True;
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
if 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;
Extensions_Allowed := Extensions_Allowed_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;
Polling_Required := Polling_Required_Config;
end Set_Opt_Config_Switches;
---------------
-- Tree_Read --
---------------
procedure Tree_Read is
Tree_Version_String_Len : Nat;
Ada_Version_Config_Val : Nat;
Ada_Version_Explicit_Config_Val : Nat;
Assertions_Enabled_Config_Val : Nat;
begin
Tree_Read_Int (Tree_ASIS_Version_Number);
Tree_Read_Bool (Address_Is_Private);
Tree_Read_Bool (Brief_Output);
Tree_Read_Bool (GNAT_Mode);
Tree_Read_Char (Identifier_Character_Set);
Tree_Read_Bool (Ignore_Rep_Clauses);
Tree_Read_Bool (Ignore_Style_Checks_Pragmas);
Tree_Read_Int (Maximum_File_Name_Length);
Tree_Read_Data (Suppress_Options'Address,
(Suppress_Options'Size + SU - 1) / SU);
Tree_Read_Bool (Verbose_Mode);
Tree_Read_Data (Warning_Mode'Address,
(Warning_Mode'Size + SU - 1) / SU);
Tree_Read_Int (Ada_Version_Config_Val);
Tree_Read_Int (Ada_Version_Explicit_Config_Val);
Tree_Read_Int (Assertions_Enabled_Config_Val);
Tree_Read_Bool (All_Errors_Mode);
Tree_Read_Bool (Assertions_Enabled);
Tree_Read_Bool (Check_Float_Overflow);
Tree_Read_Int (Int (Check_Policy_List));
Tree_Read_Int (Int (Default_Pool));
Tree_Read_Bool (Full_List);
Ada_Version_Config :=
Ada_Version_Type'Val (Ada_Version_Config_Val);
Ada_Version_Explicit_Config :=
Ada_Version_Type'Val (Ada_Version_Explicit_Config_Val);
Assertions_Enabled_Config :=
Boolean'Val (Assertions_Enabled_Config_Val);
-- Read version string: we have to get the length first
Tree_Read_Int (Tree_Version_String_Len);
declare
Tmp : String (1 .. Integer (Tree_Version_String_Len));
begin
Tree_Read_Data
(Tmp'Address, Tree_Version_String_Len);
System.Strings.Free (Tree_Version_String);
Free (Tree_Version_String);
Tree_Version_String := new String'(Tmp);
end;
Tree_Read_Data (Distribution_Stub_Mode'Address,
(Distribution_Stub_Mode'Size + SU - 1) / Storage_Unit);
Tree_Read_Bool (Inline_Active);
Tree_Read_Bool (Inline_Processing_Required);
Tree_Read_Bool (List_Units);
Tree_Read_Int (Multiple_Unit_Index);
Tree_Read_Bool (Configurable_Run_Time_Mode);
Tree_Read_Data (Operating_Mode'Address,
(Operating_Mode'Size + SU - 1) / Storage_Unit);
Tree_Read_Bool (Suppress_Checks);
Tree_Read_Bool (Try_Semantics);
Tree_Read_Data (Wide_Character_Encoding_Method'Address,
(Wide_Character_Encoding_Method'Size + SU - 1) / SU);
Tree_Read_Bool (Upper_Half_Encoding);
Tree_Read_Bool (Force_ALI_Tree_File);
end Tree_Read;
----------------
-- Tree_Write --
----------------
procedure Tree_Write is
Version_String : String := Gnat_Version_String;
begin
Tree_Write_Int (ASIS_Version_Number);
Tree_Write_Bool (Address_Is_Private);
Tree_Write_Bool (Brief_Output);
Tree_Write_Bool (GNAT_Mode);
Tree_Write_Char (Identifier_Character_Set);
Tree_Write_Bool (Ignore_Rep_Clauses);
Tree_Write_Bool (Ignore_Style_Checks_Pragmas);
Tree_Write_Int (Maximum_File_Name_Length);
Tree_Write_Data (Suppress_Options'Address,
(Suppress_Options'Size + SU - 1) / SU);
Tree_Write_Bool (Verbose_Mode);
Tree_Write_Data (Warning_Mode'Address,
(Warning_Mode'Size + SU - 1) / Storage_Unit);
Tree_Write_Int (Ada_Version_Type'Pos (Ada_Version_Config));
Tree_Write_Int (Ada_Version_Type'Pos (Ada_Version_Explicit_Config));
Tree_Write_Int (Boolean'Pos (Assertions_Enabled_Config));
Tree_Write_Bool (All_Errors_Mode);
Tree_Write_Bool (Assertions_Enabled);
Tree_Write_Bool (Check_Float_Overflow);
Tree_Write_Int (Int (Check_Policy_List));
Tree_Write_Int (Int (Default_Pool));
Tree_Write_Bool (Full_List);
Tree_Write_Int (Int (Version_String'Length));
Tree_Write_Data (Version_String'Address, Version_String'Length);
Tree_Write_Data (Distribution_Stub_Mode'Address,
(Distribution_Stub_Mode'Size + SU - 1) / SU);
Tree_Write_Bool (Inline_Active);
Tree_Write_Bool (Inline_Processing_Required);
Tree_Write_Bool (List_Units);
Tree_Write_Int (Multiple_Unit_Index);
Tree_Write_Bool (Configurable_Run_Time_Mode);
Tree_Write_Data (Operating_Mode'Address,
(Operating_Mode'Size + SU - 1) / SU);
Tree_Write_Bool (Suppress_Checks);
Tree_Write_Bool (Try_Semantics);
Tree_Write_Data (Wide_Character_Encoding_Method'Address,
(Wide_Character_Encoding_Method'Size + SU - 1) / SU);
Tree_Write_Bool (Upper_Half_Encoding);
Tree_Write_Bool (Force_ALI_Tree_File);
end Tree_Write;
end Opt;
|
