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/* Header for dependency analysis

   Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008

   Free Software Foundation, Inc.

   Contributed by Paul Brook

This file is part of GCC.

GCC 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 3, or (at your option) any later

version.

GCC 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 GCC; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

/****************************** Enums *********************************/

typedef enum

{

  NOT_ELEMENTAL,        /* Not elemental case: normal dependency check.  */

  ELEM_CHECK_VARIABLE,  /* Test whether variables overlap.  */

  ELEM_DONT_CHECK_VARIABLE  /* Test whether variables overlap only if used

                               in an expression.  */

}

gfc_dep_check;

/*********************** Functions prototypes **************************/

bool gfc_ref_needs_temporary_p (gfc_ref *);

bool gfc_full_array_ref_p (gfc_ref *, bool *);

gfc_expr *gfc_get_noncopying_intrinsic_argument (gfc_expr *);

int gfc_check_fncall_dependency (gfc_expr *, sym_intent, gfc_symbol *,

                                 gfc_actual_arglist *, gfc_dep_check);

int gfc_check_dependency (gfc_expr *, gfc_expr *, bool);

int gfc_is_same_range (gfc_array_ref *, gfc_array_ref *, int, int);

int gfc_expr_is_one (gfc_expr *, int);

int gfc_dep_resolver(gfc_ref *, gfc_ref *);

int gfc_are_equivalenced_arrays (gfc_expr *, gfc_expr *);