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diff --git a/canon.ads b/canon.ads
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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 for statements which do not have a
-   --  label.
-   Canon_Flag_Add_Labels : Boolean := False;
-
-   --  If true, canon sequentials statements (processes and subprograms).
-   Canon_Flag_Sequentials_Stmts : Boolean := False;
-
-   --  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);
-
-   -- 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;