omp_lower.h

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/*

  Copyright (C) 2000, 2001 Silicon Graphics, Inc.  All Rights Reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of version 2 of the GNU General Public License as
  published by the Free Software Foundation.

  This program is distributed in the hope that it would be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

  Further, this software is distributed without any warranty that it is
  free of the rightful claim of any third person regarding infringement 
  or the like.  Any license provided herein, whether implied or 
  otherwise, applies only to this software file.  Patent licenses, if 
  any, provided herein do not apply to combinations of this program with 
  other software, or any other product whatsoever.  

  You should have received a copy of the GNU General Public License along
  with this program; if not, write the Free Software Foundation, Inc., 59
  Temple Place - Suite 330, Boston MA 02111-1307, USA.

  Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pky,
  Mountain View, CA 94043, or:

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*/


/* ====================================================================
 *
 * Revision history:
 *  26-Jun-97 : First created by Dave Kohr
 *
 * Description:
 * Declarations of global functions from omp_lower.cxx
 *
 * Exported types:
 * None
 *
 * Exported functions and macros:
 * OMP_Prelower() : Perform first step of OpenMP pragma transformation
 * ==================================================================== */

#ifndef omp_lower_h_included
#define omp_lower_h_included

#ifdef __cplusplus
extern "C" {
#endif


#ifndef wn_INCLUDED
#include "wn.h"
#endif

#ifndef pu_info_INCLUDED
#include "pu_info.h"
#endif

extern WN* OMP_Prelower(PU_Info *current_pu, WN* pu);

#define THREAD_NUM_PREG_NAME "thread_num"


#ifdef __cplusplus
}
#endif

#ifndef symtab_INCLUDED
#include "symtab.h"
#endif

extern BOOL
WN_Store_Target_Matches_Reduction(WN *store, WN *reduction);

/*
The generalized lowerer for ATOMIC is available only in the OMP Prelowerer.
However, we want to be able to lower appropriate ATOMIC operations to
Compare-and-Swap and Fetch-And-Op from the MP Lowerer.  So the OMP
Prelowerer exports just enough of the ATOMIC implementation to allow the MP
Lowerer to identify and lower these kinds of ATOMIC.
*/

enum ATOMIC_Lowering_Class {
  ALCLASS_CRITICAL,
  ALCLASS_SWAP,
  ALCLASS_DIRECT,
  ALCLASS_ERROR
};

extern ATOMIC_Lowering_Class WN_ATOMIC_Lowering_Class(WN *atomic);

extern ATOMIC_Lowering_Class WN_ATOMIC_STORE_Lowering_Class(WN *store);

typedef void (*Update_Private_Func)(ST *st, WN *wn);

extern WN *
Atomic_Using_Swap(WN *atomic, WN *store, WN *operation, WN *parent,
                  Update_Private_Func upf, ST *x2 = NULL, ST *x3 = NULL);

extern WN *
Atomic_Direct(WN *atomic, WN *store, WN *operation);

extern WN *
Get_ATOMIC_Update_LDA(WN *wn);

#endif /* omp_lower_h_included */