/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
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*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/


#define optbegin        ++InOptimizer;
#define optend          --InOptimizer; }
#define optreturn( x )  { --InOptimizer; return( x ); }
#define optreturnvoid   { --InOptimizer; return; }

extern  int     InOptimizer;

#define _Class( var )      (((ins_entry *)(var))->oc.oc_header.class & GET_BASE)
#define _Attr( var )       (((ins_entry *)(var))->oc.oc_header.class &~GET_BASE)
#define _SetAttr( v1, v2 ) ((ins_entry *)(v1))->oc.oc_header.class |= v2
#define _ChgClass( v1,v2 ) ((ins_entry *)(v1))->oc.oc_header.class = \
                            _Attr( v1 ) | v2
#define _SetClass( v1,v2 ) ((ins_entry *)(v1))->oc.oc_header.class = v2

#define _TransferClass( var ) ( ( var & GET_BASE ) >= OC_JMP )

#define _Label( var )      (*(code_lbl **)&((ins_entry*)(var))->oc.oc_handle.handle)
#define _LblRef( var )     (((ins_entry *)(var))->oc.oc_handle.ref)
#define _LblLine( var )     (((ins_entry *)(var))->oc.oc_handle.line)
#define _JmpCond( var )    (((ins_entry *)(var))->oc.oc_jcond.cond)
#define _RetPop( var )     (((ins_entry *)(var))->oc.oc_ret.pops)
#define _ObjLen( var )     (((ins_entry *)(var))->oc.oc_header.objlen)
#define _InsLen( var )     (((ins_entry *)(var))->oc.oc_header.reclen)

/*  the next size seems to cover almost all optimizer entries that get allocated */
#define INSTR_FRLSIZE ( 12 + sizeof( ins_link ) + sizeof( oc_header ) )
