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-- Canonicalization pass
-- Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
--
-- GHDL is free software; you can redistribute it and/or modify it under
-- the terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 2, or (at your option) any later
-- version.
--
-- GHDL is distributed in the hope that it will be useful, but WITHOUT 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
-- along with GHDL; see the file COPYING. If not, write to the Free
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-- 02111-1307, USA.
with Iirs; use Iirs;
package Canon is
-- If true, a label will be added to unlabelled concurrent statements.
Canon_Flag_Add_Labels : Boolean := False;
-- If true, canon sequentials statements (processes and subprograms).
Canon_Flag_Sequentials_Stmts : Boolean := False;
-- If true, canon concurrent statements: transform them into processes.
Canon_Flag_Concurrent_Stmts : Boolean := True;
-- If true, canon configuration.
Canon_Flag_Configurations : Boolean := True;
-- If true, canon associations (reorder, add open associations).
Canon_Flag_Associations : Boolean := True;
-- If true, canon lists in specifications.
Canon_Flag_Specification_Lists : Boolean := True;
-- If true, canon expressions.
Canon_Flag_Expressions : Boolean := False;
-- If true, replace 'all' sensitivity list by the explicit list
-- (If true, Canon_Flag_Sequentials_Stmts must be true)
Canon_Flag_All_Sensitivity : Boolean := False;
-- If true, operands of type array element of a concatenation operator
-- are converted (by an aggregate) into array.
Canon_Concatenation : Boolean := False;
-- Do canonicalization:
-- Transforms concurrent statements into sensitized process statements
-- (all but component instanciation and block).
-- This computes sensivity list.
--
-- Association list are completed:
-- * Formal are added.
-- * association are created for formal not associated (actual is open).
-- * an association is created (for block header only).
procedure Canonicalize (Unit: Iir_Design_Unit);
-- Create a default configuration declaration for architecture ARCH.
function Create_Default_Configuration_Declaration
(Arch : Iir_Architecture_Body)
return Iir_Design_Unit;
-- Canonicalize a subprogram call.
procedure Canon_Subprogram_Call (Call : Iir);
-- Canon on expressions, mainly for function calls.
procedure Canon_Expression (Expr: Iir);
-- Canon a conditional variable assignment into a conditional statement.
function Canon_Conditional_Variable_Assignment_Statement (Stmt : Iir)
return Iir;
-- Canon a conditional signal assignment into a conditional statement.
function Canon_Conditional_Signal_Assignment_Statement (Stmt : Iir)
return Iir;
-- Compute the sensivity list of EXPR and add it to SENSIVITY_LIST.
-- If IS_TARGET is true, the longuest static prefix of the signal name
-- is not added to the sensitivity list, but other static prefix (such
-- as indexes of an indexed name) are added.
procedure Canon_Extract_Sensitivity
(Expr: Iir; Sensitivity_List: Iir_List; Is_Target: Boolean := False);
-- Compute the sensitivity list of all-sensitized process PROC.
-- Used for vhdl 08.
function Canon_Extract_Process_Sensitivity
(Proc : Iir_Sensitized_Process_Statement)
return Iir_List;
end Canon;
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